DOCSLIB.ORG

Salome Meshing for the Overviz Simulation Suite

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Salome Meshing for the Overviz Simulation Suite Salome Meshing for the OverViz Simulation Suite March 2019 1301 South Capital of Texas Hwy, Suite B-330 Austin, TX 78746, USA www.esgeetech.com [email protected] 2 Contents • Overview of 2D geometry and mesh creation in Salome • 2D geometry and mesh creation example • Overview of 3D geometry and mesh creation in Salome • 3D example: • Geometry creation • Meshing example 1 : Body Fit • Meshing example 2 : Automatic Tetrahedralization • Meshing example 3 : Mixed mesh 3 2D Geometry and Mesh Generation This section provides an overview of how to generate a 2D mesh in Salome. The subsequent section provides an illustrate example. 4 Creating 2D Geometry in Salome 1. First, create the 2D geometry shape using standard 2D geometry operations: points, lines, circles, Boolean, etc. 2. The final 2D shapes must be represented by Face objects in Salome 3. Create groups of Faces (if needed for complex geometries) to simplify meshing process. 4. Apply the Partition function to the group of faces. The partition fuses all containing geometry objects, preserving intersections and interferences. This is important for meshing. 5. Create vector in the direction of extrusion 5 Creating 2D Geometry in Salome 6. Extrude the partition along the vector using the extrusion function 7. Using Operations>Blocks>Propagate on Extrusion to mark extruded edges that will be used for meshing. 8. Explode Extrusion to solids 9. Explode Extrusion to faces 10. Name all of the faces and solids using Right Click Rename or pressing F2 11. Open the Salome Mesher to continue to meshing 6 Creating 2D Geometry in Salome 12. Create a mesh using the extrusion object using the method 3-D Extruded Mesh. 13. Create sub-mesh. Choose edge component created from step 7. Set 1D mesh type to Wire Discretization with Number of Segments = 1. 14. Create sub-mesh on all front faces. Select appropriate 2D/1D meshing algorithms for front. 15. Right click on the sub-mesh from step 14 and click Compute Sub-mesh 16. Compute the rest of the mesh. The front face will be extruded to complete the mesh. 17. Use Create Groups from Geometry to bring the names created earlier on the geometry into the mesh. 7 Creating 2D Geometry in Salome 18. Export the mesh file as .unv (make sure to highlight the mesh you want to export in the tree) 19. Use Python script “convert_unv_to_neu.py” to convert the mesh to .neu 20. The .neu may now be used in the OverViz Simulation Suite 8 2D Geometry and Mesh Example This section provides an example of creating an extruded 2D geometry and mesh in Salome. 9 2D Geometry and Mesh Example This example will guide a viewer through the creation of the following geometry and mesh. showerhead axis GAS wall wafer wall wafer-side outflow 10 Creating 2D Geometry in Salome Create points that will be used to create edges. Point Coordinates X Y 0 0 0 8 0 10 0 4 10 4 8 -2 10 -2 11 Creating 2D Geometry in Salome Create second Create first rectangle rectangle 12 Creating 2D Geometry in Salome Create first face Create second face 13 Creating 2D Geometry in Salome Partition to two faces. You should now have a single object called partition in the tree. 14 Creating 2D Geometry in Salome Create a vector in the z-direction 15 Creating 2D Geometry in Salome Create an extrusion using the partition and the vector 16 Creating 2D Geometry in Salome Apply Propagate to the Extrusion. Compound 1, shown below, will be used for the 2D mesh extrusion 17 Creating 2D Geometry in Salome Explode solids and faces Rename solids and faces 18 Meshing the 2D Geometry in Salome Create mesh on Extrusion_1. Assign Extrusion 3D algorithm. Then select Apply and Close. 19 Meshing the 2D Geometry in Salome Create sub-mesh on Mesh_1. Select Compound_1 for Geometry input. Assign 1D Wire Discretization with Number of Segments set to 1. 20 Meshing the 2D Geometry in Salome Create sub-mesh on Mesh_1 using the two front faces. Select Quadrangle Mapping (for quad mesh). 21 Meshing the 2D Geometry in Salome Using Wire Discretization for 1D Algorithm. Set Hypothesis to Local Length of 0.2. 22 Meshing the 2D Geometry in Salome Compute Sub-Mesh_2 to generate surface mesh of front faces 23 Meshing the 2D Geometry in Salome Right click Mesh_1 and select Compute to generate the completed mesh. 24 Meshing the 2D Geometry in Salome Create Groups from Geometry on Mesh_1 using the Solids and Faces that were named earlier in the Geometry Module. 25 Meshing the 2D Geometry in Salome Export the mesh to UNV format. Finally, convert the UNV file to NEU file using the Esgee provided script. 26 3D Geometry Creation This section provides an example of creating a 3D geometry in Salome. This geometry will be used to demonstrate two types of meshing in Salome. 27 General Comments about 3D Meshing . 3D meshes must be created externally and then imported in the OverViz Simulation Suite . Support file formats: . Gambit neutral (.neu) . CGNS (.cgns) . Nastran (.nas) . Tools for creating 3D mesh in above formats Esgee prefers . Salome (save as .unv, then convert to .neu using script) this tool . GMsh . ANSYS Mesh (.cgns) . Gambit (.cgns) . Nastran (.nas) . Pointwise (.cgns, .neu, or .nas) . After importing, set Coordinate type to 3D in the OverViz GUI (or flag=1 in the input file) 28 Process for Creating 3D Mesh in Salome Geometry Creation 1. Create 3D geometry in Geometry Module using 3D geometry operations (extrude, revolve, extrude along path, Boolean operations, etc) 2. If multiple sub-domains are needed in the model, you must make sure: • Each sub-domain is created as a separate solid volume in Salome • Solid volumes are combined into a single compound part (this ensures that the mesh is conformal between sub-domains) • The compound part is partitioned (this Salome operations makes sure all faces/edges for different subdomains are imprinted 29 Process for Creating 3D Mesh in Salome Geometry Creation 3. The partition must be “exploded” into its components so that all sub- domains and faces can be recognized 1. Explode partition into solids 2. Explode partition into faces 4. Rename solids and faces as desired 30 Process for Creating 3D Mesh in Salome Mesh Creation 5. Switch to Mesh module 6. Create 3D Mesh on Partition using 3D meshing algorithm (extrusion, body fitted, 1D-2D-3D sizing algorithm). Example provided later. 7. Add local sizes to sub-domains, faces, and edge as needed. 8. Compute mesh to create 3D mesh 31 Process for Creating 3D Mesh in Salome Mesh Creation 9. To bring in the exploded subdomains and faces from the geometry module, we must “Create Groups from Geometry” • Right click on the and select Create Groups from Geometry • Select all the subdomains and faces in the tree that we created under Partition • Now the list of subdomains and faces should appear under the Mesh we created in the tree 32 Process for Creating 3D Mesh in Salome Convert Mesh from .UNV to .NEU 10. Export the mesh file as .unv (make sure to highlight the mesh you want to export in the tree) 11. Use Python script “convert_unv_to_neu.py” to convert the mesh to .neu 12. The .neu may now be used in the OverViz Simulation Suite 33 3D Geometry and Mesh Example 34 3D Geometry and Mesh Example This example will guide a viewer through the creation of the following geometry and mesh. 35 Creating 3D Geometry in Salome Create a box for the gas/plasma volume. 36 Creating 3D Geometry in Salome Create another box that will be used to create both the bottom and top electrodes. 37 Creating 3D Geometry in Salome Create a box that will be part of the top electrode. 38 Creating 3D Geometry in Salome Create a Translation using Box_2 to form the bottom electrode. 39 Creating 3D Geometry in Salome Create a Translation using Box_2 to form the top electrode. 40 Creating 3D Geometry in Salome Create a Translation using Box_3 to form part of the top electrode. 41 Creating 3D Geometry in Salome Fuse Translation_2 and Translation_3 into a single object. This is the top electrode. 42 Creating 3D Geometry in Salome Create a large box that intersects half of the model. This will be used for a Boolean operation. 43 Creating 3D Geometry in Salome Translate Box_4 so that it properly intersects half of the entire geometry. 44 Creating 3D Geometry in Salome Use Boolean Cut with Translation_4 to cut the three objects to create the half symmetry. 45 Creating 3D Geometry in Salome Partition the 3 Cut Objects. 46 Creating 3D Geometry in Salome Explode solids and faces Rename solids and faces 47 3D Meshing Examples This section provides multiple examples of creating 3D meshes in Salome using the geometry in the previous section. 48 Creating 3D Mesh in Salome There are numerous techniques and tools for creating meshes in Salome. The simplest techniques will be demonstrated here. Please refer to Salome documentation for more complex methods. Automatic Tetrahedralization Body Fit Mixed Meshing with Refined Sheath Mesh 49 3D Mesh Example 1 This section provides an example of creating a hexahedral 3D mesh using Body Fitting Parameters 50 Creating 3D Mesh in Salome Create a new mesh on Partition and assign the following Body Fit parameters 51 Creating 3D Mesh in Salome Create Groups from Geometry on Mesh_1 using the Solids and Faces that were named earlier in the Geometry Module. 52 Creating 3D Mesh in Salome The mesh can now be exported as a UNV and converted to NEU 53 3D Mesh Example 2 This section provides an example of creating a tetrahedral 3D mesh using Automatic Tetrahedralization 54 Creating 3D Mesh in Salome Create a new mesh on Partition and assign 3D: Automatic Tetrahedralization with a length of 0.25.
Load more

Recommended publications
  • English Translation of the German by Tom Hammond
    Richard Strauss Susan Bullock Sally Burgess John Graham-Hall John Wegner Philharmonia Orchestra Sir Charles Mackerras CHAN 3157(2) (1864 –1949) © Lebrecht Music & Arts Library Photo Music © Lebrecht Richard Strauss Salome Opera in one act Libretto by the composer after Hedwig Lachmann’s German translation of Oscar Wilde’s play of the same name, English translation of the German by Tom Hammond Richard Strauss 3 Herod Antipas, Tetrarch of Judea John Graham-Hall tenor COMPACT DISC ONE Time Page Herodias, his wife Sally Burgess mezzo-soprano Salome, Herod’s stepdaughter Susan Bullock soprano Scene One Jokanaan (John the Baptist) John Wegner baritone 1 ‘How fair the royal Princess Salome looks tonight’ 2:43 [p. 94] Narraboth, Captain of the Guard Andrew Rees tenor Narraboth, Page, First Soldier, Second Soldier Herodias’s page Rebecca de Pont Davies mezzo-soprano 2 ‘After me shall come another’ 2:41 [p. 95] Jokanaan, Second Soldier, First Soldier, Cappadocian, Narraboth, Page First Jew Anton Rich tenor Second Jew Wynne Evans tenor Scene Two Third Jew Colin Judson tenor 3 ‘I will not stay there. I cannot stay there’ 2:09 [p. 96] Fourth Jew Alasdair Elliott tenor Salome, Page, Jokanaan Fifth Jew Jeremy White bass 4 ‘Who spoke then, who was that calling out?’ 3:51 [p. 96] First Nazarene Michael Druiett bass Salome, Second Soldier, Narraboth, Slave, First Soldier, Jokanaan, Page Second Nazarene Robert Parry tenor 5 ‘You will do this for me, Narraboth’ 3:21 [p. 98] First Soldier Graeme Broadbent bass Salome, Narraboth Second Soldier Alan Ewing bass Cappadocian Roger Begley bass Scene Three Slave Gerald Strainer tenor 6 ‘Where is he, he, whose sins are now without number?’ 5:07 [p.
    [Show full text]
  • Optimization Design by Coupling Computational Fluid Dynamics and Genetic Algorithm 125
    DOI: 10.5772/intechopen.72316 Provisional chapter Chapter 5 Optimization Design by Coupling Computational Fluid OptimizationDynamics and Design Genetic by Algorithm Coupling Computational Fluid Dynamics and Genetic Algorithm Jong-Taek Oh and Nguyen Ba Chien Jong-TaekAdditional information Oh and is availableNguyen at Bathe endChien of the chapter Additional information is available at the end of the chapter http://dx.doi.org/10.5772/intechopen.72316 Abstract Nowadays, optimal design of equipment is one of the most practical issues in modem industry. Due to the requirements of deploying time, reliability, and design cost, bet- ter approaches than the conventional ones like experimental procedures are required. Moreover, the rapid development of computing power in recent decades opens a chance for researchers to employ calculation tools in complex configurations. In this chapter, we demonstrate a kind of modern optimization method by coupling computational fluid dynamics (CFD) and genetic algorithms (GAs). The brief introduction of GAs and CFD package OpenFOAM will be performed. The advantage of this approach as well as the difficulty that we must tackle will be analyzed. In addition, this chapter performs a study case in which an automated procedure to optimize the flow distribution in a manifold is established. The design point is accomplished by balancing the liquid-phase flow rate at each outlet, and the controlled parameter is a dimension of baffle between each chan- nel. Using this methodology, we finally find a set of results improving the distribution of flow. Keywords: computational fluid dynamics, VOF, optimization, OpenFOAM, genetic algorithm, open sourced 1. Introduction Computational fluid dynamics (CFD)-based optimization approach has been growing rap- idly in the past decades.
    [Show full text]
  • OCCT V.6.5.4 Release Notes
    Open CASCADE Technology & Products Products Version6. features, Highlights Technology CASCADE Open Overview , so applications linked against a previous version must berecompiled to run with this Version 6. Open CASCADE Technology & Products Technology Open CASCADE improvements and bug fixes over 6 Universal locale global current on independent made export / Import TKOpenGl libraries support plotter and viewer 2D obsolete of Removal Accelerated text visualization management texture of Redesign R and XCode Cocoa API with native visualization X, Mac OS On of support Official New automated testing system testing New automated and 3D graphics 2D both to way render unified the become input parameters and results and generation of data for bug rep bug for data of generation and results and parameters input . 0 efactored is binary incompatible withtheprevious versions CMake build scripts build CMake is nowis link Open CASCADE Open Boolean operations algorithm operations Boolean andProducts Mac OS X and Products Products and www. www. ed at build time, not at run time run at not time, build at ed opencascad Release Notes Notes Release opencascade M , Windows 8 and Visual Studio 2012 Studio Visual , and Windows 8 maintenance ; use of FTGL library is dropped FTGL of library ; use in version or e .co Release .org 6. m releas . Possibility to enable automatic check of of check automatic enable to Possibility . 6 . 0 ver. 6. ver. Technology is a Copyright © 2013 by OPEN CASCADE Page Copyright OPEN CASCADE 2013by © e 6. minor 5. 5 of . release, which includes 6 OpenCASCADE Technology . 0 4 project files files project ort . 3Dviewer over libraries 1 2 5 of 0 32 new 6 and and .
    [Show full text]
  • Development of a Coupling Approach for Multi-Physics Analyses of Fusion Reactors
    Development of a coupling approach for multi-physics analyses of fusion reactors Zur Erlangung des akademischen Grades eines Doktors der Ingenieurwissenschaften (Dr.-Ing.) bei der Fakultat¨ fur¨ Maschinenbau des Karlsruher Instituts fur¨ Technologie (KIT) genehmigte DISSERTATION von Yuefeng Qiu Datum der mundlichen¨ Prufung:¨ 12. 05. 2016 Referent: Prof. Dr. Stieglitz Korreferent: Prof. Dr. Moslang¨ This document is licensed under the Creative Commons Attribution – Share Alike 3.0 DE License (CC BY-SA 3.0 DE): http://creativecommons.org/licenses/by-sa/3.0/de/ Abstract Fusion reactors are complex systems which are built of many complex components and sub-systems with irregular geometries. Their design involves many interdependent multi- physics problems which require coupled neutronic, thermal hydraulic (TH) and structural mechanical (SM) analyses. In this work, an integrated system has been developed to achieve coupled multi-physics analyses of complex fusion reactor systems. An advanced Monte Carlo (MC) modeling approach has been first developed for converting complex models to MC models with hybrid constructive solid and unstructured mesh geometries. A Tessellation-Tetrahedralization approach has been proposed for generating accurate and efficient unstructured meshes for describing MC models. For coupled multi-physics analyses, a high-fidelity coupling approach has been developed for the physical conservative data mapping from MC meshes to TH and SM meshes. Interfaces have been implemented for the MC codes MCNP5/6, TRIPOLI-4 and Geant4, the CFD codes CFX and Fluent, and the FE analysis platform ANSYS Workbench. Furthermore, these approaches have been implemented and integrated into the SALOME simulation platform. Therefore, a coupling system has been developed, which covers the entire analysis cycle of CAD design, neutronic, TH and SM analyses.
    [Show full text]
  • GPUSPH User Guide
    GPUSPH User Guide version 5.0 — October 2016 Contents 1 Introduction 2 2 Anatomy of a project apart from the use of SALOME 2 3 Setting up and running the simulation without using the user in- terface 3 3.1 Case Examples .............................. 6 3.1.1 Framework setup ......................... 8 3.1.2 Generic simulation parameters .................. 11 3.1.3 SPH parameters .......................... 12 3.1.4 Physical parameters ....................... 13 3.1.5 Results parameters ........................ 14 3.2 Building and initializing the particle system .............. 14 4 Running your simulation 18 5 Setting up and running the simulation with the SALOME user in- terface 18 5.1 Preparing the geometry in GEOM .................... 18 5.2 Generating the mesh (optional) ..................... 20 5.3 Generating particle files with the Particle preprocessor ........ 21 5.4 Setting up and running the simulation with the GPUSPH solver ... 21 6 Visualizing the results 22 1 1 Introduction There are two ways to set up cases for GPUSPH: coding a Case file, or using the SALOME module GPUSPH solver. When coding the case file, it is possible to create the geometrical elements using built-in functions of GPUSPH (only for particle-type boundary conditions at the moment) or to read particle files generated by the Particle Preprocessor module of SALOME. Creating a case by hand corresponds to the creation of a new cusource file, with the associated header (e.g. MyCase.cu and MyCase.h), placing them under src/problems/user. This folder does not exist by default in GPUSPH, but it is recognised as a place to be scanned for case sources.
    [Show full text]
  • Alternative Pre-Processing Tools for Elmer
    Alternative pre-processing tools for Elmer ElmerTeam CSC – IT Center for Science, Finland CSC, 2018 Mesh generation capabilities of Elmer suite • ElmerGrid onative generation of simple structured meshes • ElmerGUI oplugins for tetgen, netgen and ElmerGrid • No geometry generation tools to speak about • No capability for multibody Delaunay meshing • Limited control over mesh quality and density • Complex meshes must be created by other tools! Open Source software for Computational Engineering Open source software in computational engineering • Academicly rooted stuff is top notch oLinear algebra, solver libraries oPetSc, Trilinos, OpenFOAM, LibMesh++, … • CAD and mesh generation not that competitive oOpenCASCADE legacy software oMesh generators netgen, tetgen, Gmsh are clearly academic oAlso for OpenFOAM there is development of commercial preprocessing tools • Users may need to build their own workflows from the most suitable tools oAlso in combination with commerial software Open Source Mesh Generation Software for Elmer • ElmerGrid: native to Elmer • Gmsh oSimple structured mesh generation oIncludes geometry definition tools oSimple mesh manipulation oElmerGUI/ElmerGrid can read the format oUsable via ElmerGUI msh format • ElmerMesh2D • SALOME oObsolite 2D Delaunay mesh generator oElmerGrid can read the unv format usable via the old ElmerFront written by SALOME oPreliminary version for direct interface to • Netgen Elmer oCan write linear meshes in Elmer format oUsable also as ElmerGUI plug-in • FreeCAD • Tetgen oOpen source community
    [Show full text]
  • SALOME 7.2.0 Release Notes
    SALOME : The Open Source Integration Platform for Numerical Simulation SALOME 7.2.0 Major release announcement May 2013 GENERAL INFORMATION CEA/DEN, EDF R&D and OPEN CASCADE are pleased to announce SALOME version 7.2.0. It is a major release that contains the results of planned major and minor improvements and bug fixes against SALOME version 6.6.0 released in December 2012. SALOME Platform SALOME Platform Copyright © 2001- 2013. All rights reserved. Page 1 of 32 SALOME : The Open Source Integration Platform for Numerical Simulation Table of Contents GENERAL INFORMATION ........................................................................................................................1 NEW FEATURES AND IMPROVEMENTS ................................................................................................3 PREREQUISITES CHANGES .................................................................................................................................3 License restrictions......................................................................................................................................4 MAJOR CHANGES ..............................................................................................................................................5 Removal of med v2.1 support .....................................................................................................................5 Removal of MEDMEM API..........................................................................................................................5
    [Show full text]
  • Development of a Support Tool to Predict Manufacturability of Deep- Drawing Parts
    INTERNATIONAL DESIGN CONFERENCE - DESIGN 2016 Dubrovnik - Croatia, May 16 - 19, 2016. DEVELOPMENT OF A SUPPORT TOOL TO PREDICT MANUFACTURABILITY OF DEEP- DRAWING PARTS D. Goller, S. Schreyer, B. Alber-Laukant, F. Rieg and W. Volk Keywords: process analysis, deep drawing, geometric modeling kernel, feasibility analysis 1. Introduction There are several different approaches to develop new products. A popular example is the product development process (PDP) by Pahl/Beitz [Feldhusen and Grote 2013]. The development engineer always benefits from detailed knowledge from later stages of the PDP, like process knowledge. Most likely this information is not available at these early stages, so it could be transferred from similar cases, which already have completed this stage, or the information can be generated by fast but preferably accurate estimations. The main goal of the collaborative research centre FORPRO², supported by the Bavarian research foundation (Bayerische Forschungsstiftung - BFS), is the optimization of simulation based development by knowledge transfer. One aspect of before mentioned optimization is the development of a software tool to predict the manufacturability of deep drawing parts. This can be achieved by process simulation by means of finite element analysis, but getting reliable output is usually extremely time-consuming and requires detailed process knowledge. Especially in early stages of the development process, a fast prediction on basis of non-detailed data is more expedient. There is already an approach to create a fast assumption of the manufacturability by using One-Step- solvers, which are already available in commercial solutions as for intance Autoform-OneStepforCatia [AutoForm 2015] and Altair HyperForm [Altair Engineering Inc.
    [Show full text]
  • Salome9 the Open Source Integration Platform for Numerical Simulation Salome9 Platform
    salome-platform.org SALOME9 THE OPEN SOURCE INTEGRATION PLATFORM FOR NUMERICAL SIMULATION SALOME9 PLATFORM The SALOME platform is an open source software framework for the integration of numerical solvers in various scientific domains. CEA and EDF are using SALOME to perform a wide range of simulations, which are typically related to industrial equipment in power plants (nuclear power plants, wind turbines, dams…). Some primary concerns are the design of new-generation reactor types, nuclear fuel management and transport, material ageing for the life-cycle management of equipment, and the reliability and safety of the nuclear facilities. To address these challenges, SALOME is integrating a CAD/CAE modeling tool, industrial mesh generators, and advanced 3D visualization features. KEY FEatuRES MODEL OF SERVICE AND SUPPORT In order to accurately simulate complex DEVELOPMENT OPEN CASCADE provides a whole industrial systems, scientists and engi- The SALOME platform is actively deve- range of services around SALOME for neers need to integrate domain specific loped by CEA and EDF, two key players professional end-users, such as technical solvers regarding material science, solid in the French energy industry, and with support and specific training. mechanics, structural dynamics, fluid the support of the Capgemini subsidiary The “à-la-carte” support program is par- physics, thermohydraulics, nuclear phy- OPEN CASCADE, one of the leaders ticularly suited for universities and aca- sics, radiations or electromagnetism. The in software development for scienti- demic organizations, as well as industrial SALOME platform provides one single fic computing. This 15 years old par- companies: Figure 1: Screenshots of the public web site of SALOME simulation environment for all these tnership provides the SALOME project Helpdesk and technical support for (www.salome-plateform.org) fields.
    [Show full text]
  • Simulation Modelling for Computer Aided Design of Secondary Aerodynamic Wing Surfaces Aleksandr A
    Advances in Systems Science and Application (2015) Vol.15 No.4 338-350 Simulation Modelling for Computer Aided Design of Secondary Aerodynamic Wing Surfaces Aleksandr A. Gorbunov, Aleksej D. Pripadchev, Irina S. Bykova and Valerij V. Elagin Federal State Educational Government-financed Institution of Higher Professional Education, Orenburg State University, Orenburg region, Russia Abstract The simulation modelling technique of secondary aerodynamic wing surface of the long-haul aircraft using a high-precision mathematical simulation in the aerody- namics and hydrodynamics computer programme has been formulated in the present article. The method proposed is based on the modern methods in the field of computer-aided design of aircraft using CATIA three-dimensional sim- ulation and simulation modelling in SALOME environment. The use of high- precision mathematical simulation in computer-aided design of secondary aero- dynamic wing surfaces allows us to determine the aerodynamic characteristics of the secondary aerodynamic surface of the model developed and to verify the previous results of the project definition. Keywords Secondary aerodynamic surfaces; High-precision computer mathemat- ical simulation; Simulation model; A long-haul aircraft; Synthesis; Design au- tomation; Project procedures; Three-dimensional modelling 1 Introduction Building the new long-haul aircraft (A/C) with improved performance character- istics and enhancing the currently used aircraft is effected in various ways. One of them is improving its aerodynamics depending largely on the A/C look. In our view, the most rational way to improve the aerodynamic characteristics of the A/C is to install the secondary aerodynamic surfaces (SAS) at the wingtip. The use of SAS reduces the induced drag of the aircraft, enhances the effective wing aspect-ratio and ascensional power at the wingtip, improves A/C longitu- dinal/transverse stability, reduces specific fuel consumption, cuts takeoff run and landing roll of the aircraft.
    [Show full text]
  • Ph.D. in Mechanical Engineering with Dissertation in Intelligent Energetic Systems Program
    A proposal for the Doctor of Philosophy Degree in Mechanical Engineering with Dissertation in Intelligent Energetic Systems at the New Mexico Institute of Mining and Technology October 2015 1 Executive Summary ............................................................................................................... 4 A Purpose of the Program ................................................................................................... 5 A.1 The Primary Purpose of the Proposed Program ....................................................... 5 A.2 Consistency of the Proposed Program with the Role and Scope of the Institution .. 6 A.3 Priority of the Institution for the Proposed Program ................................................ 7 A.4 Curriculum ............................................................................................................... 8 B Justification for the Program ......................................................................................... 11 B.1 State and Regional Need ........................................................................................ 11 B.2 Duplication ............................................................................................................. 13 B.3 Inter-Institutional Collaboration and Cooperation ................................................. 16 C Clientele and Projected Enrollment............................................................................... 21 C.1 Clientele ................................................................................................................
    [Show full text]
  • Ssc-475 Guidelines for Evaluation of Marine Finite
    NTIS #PB2019-###### SSC-475 GUIDELINES FOR EVALUATION OF MARINE FINITE ELEMENT ANALYSES Editors: Dr. E.D. Wang, Mr. J.S. Bone, Dr. M. Ma, and Mr. A. Dinovitzer This document has been approved for public release and sale; its distribution is unlimited. SHIP STRUCTURE COMMITTEE 2019 SHIP STRUCTURE COMMITTEE RDML Richard Timme RADM Lorin Selby U. S. Coast Guard Assistant Commandant Chief Engineer and Deputy Commander for Prevention Policy (CG-5P) For Naval Systems Engineering (SEA05) Co-Chair, Ship Structure Committee Co-Chair, Ship Structure Committee Mr. Jeffrey Lantz Mr. Derek Novak Director, Commercial Regulations and Standards (CG-5PS) Senior Vice President, Engineering & Technology U.S. Coast Guard American Bureau of Shipping Mr. H. Paul Cojeen Dr. John MacKay Society of Naval Architects and Marine Engineers Head, Warship Performance, DGSTCO Defence Research & Development Canada - Atlantic Mr. Kevin Kohlmann Mr. Luc Tremblay Director, Office of Safety Executive Director, Domestic Vessel Regulatory Oversight Maritime Administration and Boating Safety, Transport Canada Mr. Albert Curry Mr. Eric Duncan Deputy Assistant Commandant for Engineering and Group Director, Ship Integrity and Performance Engineering Logistics (CG-4D) (SEA 05P) U.S. Coast Guard Naval Sea Systems Command Mr. Neil Lichtenstein Dr. Thomas Fu Deputy Director N7x, Engineering Directorate Director, Ship Systems and Engineering Research Division Military Sealift Command Office of Naval Research SHIP STRUCTURE SUB-COMMITTEE UNITED STATES COAST GUARD (CVE) AMERICAN BUREAU OF SHIPPING CAPT Robert Compher Mr. Daniel LaMere Mr. Jaideep Sirkar Ms. Christina Wang Mr. Charles Rawson SOCIETY OF NAVAL ARCHITECTS AND MARINE DEFENCE RESEARCH & DEVELOPMENT CANADA ENGINEERS ATLANTIC Mr. Frederick Ashcroft Dr. Malcolm Smith Dr.
    [Show full text]