Benchmarking Five Numerical Simulation Techniques for Computing Resonance Wavelengths and Quality Factors in Photonic Crystal Membrane Line Defect Cavities
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Cvel-08-011.3
TECHNICAL REPORT: CVEL-08-011.3 Survey of Current Computational Electromagnetics Techniques and Software T. Hubing, C. Su, H. Zeng and H. Ke Clemson University June 6, 2009 This report is an update of the 2008 report, CVEL-08-011.2. This work was supported by the ARMY RESEARCH OFFICE (W. Devereux Palmer) under the auspices of the U.S. Army Research Office Scientific Services Program administered by Battelle (Delivery Order 0271, Contract No. W911NF-07-D-0001). Table of Contents I. Introduction ............................................................................................................................. 3 A. Purpose of This Report ................................................................................................................. 3 B. Categorizing CEM Modeling Tools .............................................................................................. 4 1. Time vs. Frequency Domain ........................................................................................ 4 2. IE vs. PDE .................................................................................................................... 4 3. 2D vs. 3D ...................................................................................................................... 5 4. Static, Quasi-static, Full-wave or Asymptotic .............................................................. 5 5. Circuit-based Field Solvers .......................................................................................... 6 6. Linear vs. Higher-order Methods -
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. -
Livelink for MATLAB User's Guide
LiveLink™ for MATLAB® User’s Guide LiveLink™ for MATLAB® User’s Guide © 2009–2020 COMSOL Protected by patents listed on www.comsol.com/patents, and U.S. Patents 7,519,518; 7,596,474; 7,623,991; 8,457,932;; 9,098,106; 9,146,652; 9,323,503; 9,372,673; 9,454,625, 10,019,544, 10,650,177; and 10,776,541. Patents pending. This Documentation and the Programs described herein are furnished under the COMSOL Software License Agreement (www.comsol.com/comsol-license-agreement) and may be used or copied only under the terms of the license agreement. COMSOL, the COMSOL logo, COMSOL Multiphysics, COMSOL Desktop, COMSOL Compiler, COMSOL Server, and LiveLink are either registered trademarks or trademarks of COMSOL AB. MATLAB and Simulink are registered trademarks of The MathWorks, Inc.. All other trademarks are the property of their respective owners, and COMSOL AB and its subsidiaries and products are not affiliated with, endorsed by, sponsored by, or supported by those or the above non-COMSOL trademark owners. For a list of such trademark owners, see www.comsol.com/trademarks. Version: COMSOL 5.6 Contact Information Visit the Contact COMSOL page at www.comsol.com/contact to submit general inquiries, contact Technical Support, or search for an address and phone number. You can also visit the Worldwide Sales Offices page at www.comsol.com/contact/offices for address and contact information. If you need to contact Support, an online request form is located at the COMSOL Access page at www.comsol.com/support/case. Other useful links include: • Support Center: www.comsol.com/support • Product Download: www.comsol.com/product-download • Product Updates: www.comsol.com/support/updates • COMSOL Blog: www.comsol.com/blogs • Discussion Forum: www.comsol.com/community • Events: www.comsol.com/events • COMSOL Video Gallery: www.comsol.com/video • Support Knowledge Base: www.comsol.com/support/knowledgebase Part number: CM020008 Contents Chapter 1: Introduction About This Product 12 Help and Documentation 14 Getting Help . -
The COMSOL Multiphysics Installation and Operations User's Guide
COMSOL Multiphysics ® Installation and Operations Guide VERSION 4.3 COMSOL Multiphysics Installation and Operations Guide 1998–2012 COMSOL Protected by U.S. Patents 7,519,518; 7,596,474; and 7,623,991. Patents pending. This Documentation and the Programs described herein are furnished under the COMSOL Software License Agreement (www.comsol.com/sla) and may be used or copied only under the terms of the license agree- ment. COMSOL, COMSOL Desktop, COMSOL Multiphysics, and LiveLink are registered trademarks or trade- marks of COMSOL AB. Other product or brand names are trademarks or registered trademarks of their respective holders. Version: May 2012 COMSOL 4.3 Contact Information Visit www.comsol.com/contact for a searchable list of all COMSOL offices and local representatives. From this web page, search the contacts and find a local sales representative, go to other COMSOL websites, request information and pricing, submit technical support queries, subscribe to the monthly eNews email newsletter, and much more. If you need to contact Technical Support, an online request form is located at www.comsol.com/support/contact. Other useful links include: • Technical Support www.comsol.com/support • Software updates: www.comsol.com/support/updates • Online community: www.comsol.com/community • Events, conferences, and training: www.comsol.com/events • Tutorials: www.comsol.com/products/tutorials • Knowledge Base: www.comsol.com/support/knowledgebase Part No. CM010002 Contents Chapter 1: Introduction General Tips 8 General System Requirements for Windows, Linux, or Mac Computers . 8 Hardware Parameters that Affect Performance . 9 COMSOL Release Notes . 9 Introduction to COMSOL Multiphysics and Online Help . 9 Technical Support . -
COMSOL Multiphysics®
COMSOL Multiphysics ® M ODEL L IBRARY V ERSION 3.5a How to contact COMSOL: Germany United Kingdom COMSOL Multiphysics GmbH COMSOL Ltd. Benelux Berliner Str. 4 UH Innovation Centre COMSOL BV D-37073 Göttingen College Lane Röntgenlaan 19 Phone: +49-551-99721-0 Hatfield 2719 DX Zoetermeer Fax: +49-551-99721-29 Hertfordshire AL10 9AB The Netherlands [email protected] Phone:+44-(0)-1707 636020 Phone: +31 (0) 79 363 4230 www.comsol.de Fax: +44-(0)-1707 284746 Fax: +31 (0) 79 361 4212 [email protected] [email protected] Italy www.uk.comsol.com www.comsol.nl COMSOL S.r.l. Via Vittorio Emanuele II, 22 United States Denmark 25122 Brescia COMSOL, Inc. COMSOL A/S Phone: +39-030-3793800 1 New England Executive Park Diplomvej 376 Fax: +39-030-3793899 Suite 350 2800 Kgs. Lyngby [email protected] Burlington, MA 01803 Phone: +45 88 70 82 00 www.it.comsol.com Phone: +1-781-273-3322 Fax: +45 88 70 80 90 Fax: +1-781-273-6603 [email protected] Norway www.comsol.dk COMSOL AS COMSOL, Inc. Søndre gate 7 10850 Wilshire Boulevard Finland NO-7485 Trondheim Suite 800 COMSOL OY Phone: +47 73 84 24 00 Los Angeles, CA 90024 Arabianranta 6 Fax: +47 73 84 24 01 Phone: +1-310-441-4800 FIN-00560 Helsinki [email protected] Fax: +1-310-441-0868 Phone: +358 9 2510 400 www.comsol.no Fax: +358 9 2510 4010 COMSOL, Inc. [email protected] Sweden 744 Cowper Street www.comsol.fi COMSOL AB Palo Alto, CA 94301 Tegnérgatan 23 Phone: +1-650-324-9935 France SE-111 40 Stockholm Fax: +1-650-324-9936 COMSOL France Phone: +46 8 412 95 00 WTC, 5 pl. -
Simulations of Contact Mechanics and Wear of Linearly Reciprocating Block-On-Flat Sliding Test
Simulations of contact mechanics and wear of linearly reciprocating block-on-flat sliding test André Rudnytskyj Mechanical Engineering, master's level (120 credits) 2018 Luleå University of Technology Department of Engineering Sciences and Mathematics Simulations of contact mechanics and wear of linearly reciprocating block-on-flat sliding test Andr´eRudnytskyj Master programme in Tribology of Surfaces and Interfaces - TRIBOS 4th ed. Enrollment Semester Autumn 2016. Department of Engineering Sciences and Mathematics Lule˚aUniversity of Technology ©Lule˚aUniversity of Technology, 2018. This document is freely available at www.ltu.se Preface This master’s thesis was carried out at the Division of Machine Elements, Depart- ment of Engineering Sciences and Mathematics of Lule˚aUniversity of Technology (LTU), in Sweden. It was made possible through the Joint Erasmus Mundus Mas- ter Course (EMMC) TRIBOS (Tribology of Surface and Interfaces), of which I took part in its 4th generation between the years of 2016 to 2018. I would like to thank the Education, Audiovisual and Culture Executive Agency (EACEA) of the European Union and the TRIBOS programme coordinators, pro- fessors, tutors, lecturers, and everyone involved in the programme from the Uni- versity of Leeds (UK), the University of Ljubljana (Slovenia), the University of Coimbra (Portugal), and Lule˚aUniversity of Technology (LTU) for their support inside and outside the classroom. I also thank the people directly involved in the development of the thesis for their helpful support and discussions throughout the time of this work. Andr´eRudnytskyj Lule˚a,June 2018 I Abstract The use of computational methods in tribology can be a valuable approach to deal with engineering problems, ultimately saving time and resources. -
Design of an Ultrahigh Birefringence Photonic Crystal Fiber with Large Nonlinearity Using All Circular Air Holes for a Fiber-Optic Transmission System
hv photonics Article Design of an Ultrahigh Birefringence Photonic Crystal Fiber with Large Nonlinearity Using All Circular Air Holes for a Fiber-Optic Transmission System Shovasis Kumar Biswas 1,* ID , S. M. Rakibul Islam 1, Md. Rubayet Islam 1, Mohammad Mahmudul Alam Mia 2, Summit Sayem 1 and Feroz Ahmed 1 ID 1 Department of Electrical and Electronic Engineering, Independent University Bangladesh, Dhaka 1229, Bangladesh; [email protected] (S.M.R.I.); [email protected] (M.R.I.); [email protected] (S.S.); [email protected] (F.A.) 2 Department of Electronics & Communication Engineering, Sylhet International University, Sylhet 3100, Bangladesh; [email protected] * Correspondence: [email protected]; Tel.: +880-1717-827-665 Received: 11 August 2018; Accepted: 29 August 2018; Published: 5 September 2018 Abstract: This paper proposes a hexagonal photonic crystal fiber (H-PCF) structure with all circular air holes in order to simultaneously achieve ultrahigh birefringence and high nonlinearity. The H-PCF design consists of an asymmetric core region, where one air hole is a reduced diameter and the air hole in its opposite vertex is omitted. The light-guiding properties of the proposed H-PCF structure were studied using the full-vector finite element method (FEM) with a circular perfectly matched layer (PML). The simulation results showed that the proposed H-PCF exhibits an ultrahigh birefringence of 3.87 × 10−2, a negative dispersion coefficient of −753.2 ps/(nm km), and a nonlinear coefficient of 96.51 W−1 km−1 at an excitation wavelength of 1550 nm. The major advantage of our H-PCF design is that it provides these desirable modal properties without using any non-circular air holes in the core and cladding region, thus making the fiber fabrication process much easier. -
Finite Element Method in Computer Simulation and Engineering
Finite Element Method in Computer Simulation and Engineering Dr. Anna A. Nasedkina [email protected] Institute of Mathematics, Mechanics and Computer Science Southern Federal University Outline of the lecture Computer Aided Engineering and Finite Element Analysis Main concepts of Finite Element Method Overview of Finite Element Software packages 2 Computer Aided Engineering and Finite Element Analysis 3 CAD/CAE/CAM CAD – CAE – CAM – Computer Aided Computer Aided Computer Aided Manufacturing Design Engineering 4 Role of simulation in Engineering: CAD example Boeing 777 First jetliner that is 100% digitally designed using 3D solid technology Throughout the design process, the airplane was "preassembled" on the computer, eliminating the need for a costly, full-scale mock-up (experimental model) $4 billion in CAD infrastructure CAD system: CATIA for design CAE system: ELFINI both by Dassault Systemes (France) 5 Role of simulation in Engineering: CAE example San Francisco Oakland Bay Bridge Seismic analysis of the bridge after the 1989 Loma Prieta earthquake Finite Element model of a section of the bridge subjected to an earthquake load CAE system: ADINA (USA, located in MA) 6 Flow diagram of computer simulation process 7 From physical system to mathematical modeling Idealization: mathematical model, which is an abstraction of physical reality. It is governed by partial differential equations. Modeling can be explicit and implicit. Discretization: numerical method, for example Finite Element Method. Solution: linear system -
INTRODUCTION to COMSOL Multiphysics Introduction to COMSOL Multiphysics
INTRODUCTION TO COMSOL Multiphysics Introduction to COMSOL Multiphysics © 1998–2017 COMSOL Protected by patents listed on www.comsol.com/patents, and U.S. Patents 7,519,518; 7,596,474; 7,623,991; 8,457,932; 8,954,302; 9,098,106; 9,146,652; 9,323,503; 9,372,673; and 9,454,625. Patents pending. This Documentation and the Programs described herein are furnished under the COMSOL Software License Agreement (www.comsol.com/comsol-license-agreement) and may be used or copied only under the terms of the license agreement. COMSOL, the COMSOL logo, COMSOL Multiphysics, COMSOL Desktop, COMSOL Server, and LiveLink are either registered trademarks or trademarks of COMSOL AB. All other trademarks are the property of their respective owners, and COMSOL AB and its subsidiaries and products are not affiliated with, endorsed by, sponsored by, or supported by those trademark owners. For a list of such trademark owners, see www.comsol.com/trademarks. Version: COMSOL 5.3a Contact Information Visit the Contact COMSOL page at www.comsol.com/contact to submit general inquiries, contact Technical Support, or search for an address and phone number. You can also visit the Worldwide Sales Offices page at www.comsol.com/contact/offices for address and contact information. If you need to contact Support, an online request form is located at the COMSOL Access page at www.comsol.com/support/case. Other useful links include: • Support Center: www.comsol.com/support • Product Download: www.comsol.com/product-download • Product Updates: www.comsol.com/support/updates •COMSOL Blog: www.comsol.com/blogs • Discussion Forum: www.comsol.com/community •Events: www.comsol.com/events • COMSOL Video Gallery: www.comsol.com/video • Support Knowledge Base: www.comsol.com/support/knowledgebase Part number: CM010004 Contents Introduction . -
Recent Advances in Perfectly Matched Layers in Finite Element Applications
Turk J Elec Engin, VOL.16, NO.1 2008, c TUB¨ ITAK˙ Recent Advances in Perfectly Matched Layers in Finite Element Applications Ozlem¨ OZG¨ UN¨ and Mustafa KUZUOGLU˘ Department of Electrical and Electronics Engineering, Middle East Technical University 06531, Ankara-TURKEY Abstract We present a comparative evaluation of two novel and practical perfectly matched layer (PML) implementations to the problem of mesh truncation in the finite element method (FEM): locally-conformal PML,and multi-center PML techniques. The most distinguished feature of these methods is the simplicity and flexibility to design conformal PMLs over challenging geometries,especially those with curvature discontinuities,in a straightforward way without using artificial absorbers. These methods are based on specially- and locally-defined complex coordinate transformations inside the PML region. They can easily be implemented in a conventional FEM by just replacing the nodal coordinates inside the PML region by their complex counterparts obtained via complex coordinate transformation. After overviewing the theoretical bases of these methods,we present some numerical results in the context of two- and three-dimensional electromagnetic radiation/scattering problems. Key Words: Finite element method (FEM); perfectly matched layer (PML); locally-conformal PML; multi-center PML; complex coordinate stretching; electromagnetic scattering. 1. Introduction Perfectly matched layers (PMLs) have been popular in the finite element method (FEM) and the finite difference time domain method (FDTD) for solving the domain truncation problem in electromagnetic radiation and scattering problems.The PML approach is based on the truncation of computational domain by a reflectionless artificial layer which absorbs outgoing waves regardless of their frequency and angle of incidence.The main advantage of the PML is its close proximity and conformity to the surface of the radiator or scatterer, implying that the white space can be minimized. -
On the Analysis of Perfectly Matched Layers for a Class of Dispersive
On the analysis of perfectly matched layers for a class of dispersive media and application to negative index metamaterials Eliane Bécache, Patrick Joly, Valentin Vinoles To cite this version: Eliane Bécache, Patrick Joly, Valentin Vinoles. On the analysis of perfectly matched layers for a class of dispersive media and application to negative index metamaterials. 2016. hal-01327315v3 HAL Id: hal-01327315 https://hal.archives-ouvertes.fr/hal-01327315v3 Submitted on 12 Jul 2017 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. Distributed under a Creative Commons Attribution - NonCommercial - NoDerivatives| 4.0 International License On the analysis of perfectly matched layers for a class of dispersive media and application to negative index metamaterials Éliane Bécache1,a, Patrick Joly1,b and Valentin Vinoles ∗2,c 1 Laboratoire Poems (UMR 7231 CNRS/Inria/ENSTA ParisTech), ENSTA ParisTech, 828, Boulevard des Maréchaux, 91762 Palaiseau, France 2École Polytechnique Fédérale de Lausanne, SB MATHAA CAMA, Station 8, CH-1015 Lausanne, Switzerland [email protected] [email protected] [email protected] Abstract This work deals with Perfectly Matched Layers (PMLs) in the context of dispersive media, and in particular for Negative Index Metamaterials (NIMs). -
COMSOL Multiphysics Version 4.3 Contains Many New Functions and Additions to the COMSOL Product Suite
COMSOL Multiphysics ® Release Notes VERSION 4.3 COMSOL Multiphysics Release Notes 1998–2012 COMSOL Protected by U.S. Patents 7,519,518; 7,596,474; and 7,623,991. Patents pending. This Documentation and the Programs described herein are furnished under the COMSOL Software License Agreement (www.comsol.com/sla) and may be used or copied only under the terms of the license agree- ment. COMSOL, COMSOL Desktop, COMSOL Multiphysics, and LiveLink are registered trademarks or trade- marks of COMSOL AB. Other product or brand names are trademarks or registered trademarks of their respective holders. Version: May 2012 COMSOL 4.3 Contact Information Visit www.comsol.com/contact for a searchable list of all COMSOL offices and local representatives. From this web page, search the contacts and find a local sales representative, go to other COMSOL websites, request information and pricing, submit technical support queries, subscribe to the monthly eNews email newsletter, and much more. If you need to contact Technical Support, an online request form is located at www.comsol.com/support/contact. Other useful links include: • Technical Support www.comsol.com/support • Software updates: www.comsol.com/support/updates • Online community: www.comsol.com/community • Events, conferences, and training: www.comsol.com/events • Tutorials: www.comsol.com/products/tutorials • Knowledge Base: www.comsol.com/support/knowledgebase Part No. CM010001 1 Release Notes COMSOL Multiphysics version 4.3 contains many new functions and additions to the COMSOL product suite. These Release Notes provide information regarding new functionality in existing products and an overview of new products. We have strived to achieve backward compatibility with the previous version and to include all functionality that is available there.