DOCSLIB.ORG

Flow, Heat Transfer, and Pressure Drop Interactions in Louvered-Fin Arrays

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Flow, Heat Transfer, and Pressure Drop Interactions in Louvered-Fin Arrays Flow, Heat Transfer, and Pressure Drop Interactions in Louvered-Fin Arrays N. C. Dejong and A. M. Jacobi ACRC TR-I46 January 1999 For additional information: Air Conditioning and Refrigeration Center University of Illinois Mechanical & Industrial Engineering Dept. 1206 West Green Street Prepared as part ofACRC Project 73 Urbana. IL 61801 An Integrated Approach to Experimental Studies ofAir-Side Heat Transfer (217) 333-3115 A. M. Jacobi, Principal Investigator The Air Conditioning and Refrigeration Center was founded in 1988 with a grant from the estate of Richard W Kritzer, the founder of Peerless of America Inc. A State of Illinois Technology Challenge Grant helped build the laboratory facilities. The ACRC receives continuing support from the Richard W. Kritzer Endowment and the National Science Foundation. The following organizations have also become sponsors of the Center. Amana Refrigeration, Inc. Brazeway, Inc. Carrier Corporation Caterpillar, Inc. Chrysler Corporation Copeland Corporation Delphi Harrison Thermal Systems Eaton Corporation Frigidaire Company General Electric Company Hill PHOENIX Hussmann Corporation Hydro Aluminum Adrian, Inc. Indiana Tube Corporation Lennox International, Inc. rvfodine Manufacturing Co. Peerless of America, Inc. The Trane Company Thermo King Corporation Visteon Automotive Systems Whirlpool Corporation York International, Inc. For additional information: .Air.Conditioning & Refriger-ationCenter Mechanical & Industrial Engineering Dept. University ofIllinois 1206 West Green Street Urbana IL 61801 2173333115 ABSTRACT In many compact heat exchanger applications, interrupted-fin surfaces are used to enhance air-side heat transfer performance. One of the most common interrupted surfaces is the louvered fin. The goal of this work is to develop a better understanding of the flow and its influence on heat transfer and pressure drop behavior for both louvered and convex-louvered fins. Specifically, this research explores the unavoidable end effects of heat exchanger walls; the role of vortex shedding on heat transfer and pressure drop enhancement; and the effect of using convex louvers rather than conventional flat parallel fins. Flow visualization is performed using dye in a water tunnel, and pressure drop is measured in a wind tunnel. Heat transfer is inferred from mass transfer data obtained using the naphthalene sublimation technique. Mass transfer data are acquired on a row-by­ row basis through the louvered arrays over a Reynolds number range (based on louver pitch) of 75- 1400, and local mass transfer data on fins are acquired for the convex-louver geometry over a Reynolds number range (based on hydraulic diameter) of 200 to 5400. Compared to flow far from the walls where spanwise periodic conditions exist, flow near array walls is louver-directed to a lesser degree and is characterized by deviations in flow velocity, large separation and recirculation zones, and an earlier transition to unsteady flow. At low Reynolds numbers, heat transfer is lower for louvers near the walls than for louvers far from the walls due to the large separation zones. At higher Reynolds numbers unsteady flow causes increases in heat transfer for louvers near the walls. The walls cause a large pressure-drop increase at all Reynolds numbers. In the transitional Reynolds number ~ange, transverse vortices shed from fins far from array walls are smaller and result in much less mixing than vortices shed near array walls or in the similar offset-strip geometry. These small­ scale vortices have little effect on heat transfer. For the convex-louver geometry, the results clarify the effects of boundary-layer restarting, shear-layer unsteadiness, spanwise vortices, and separation, reattachment and recirculation on heat transfer. iii TABLE OF CONTENTS Page LIST OF TABLES ................................................................................. viii LIST OF FIGURES ................................................................................ ix NOMENCLATURE ............................................................................. xviii CHAPTER 1 - IN"TRODUCTION ............................... " ................................ 1 1.1 Background ......................................................................... 1 1.2 Literature Review ................................................................... 1 1.2.1 Louvered Fins ............................................................. 2 1.2.2 Vortex Shedding .......................................................... ll 1.2.3 Convex-Louvered Fins .................................................. 15 1.3 Objectives .......................................................................... 17 CHAPTER 2 - EXPERIMENTAL APPARATUS ..............................................25 2.1 Water Tunnel and Test Section .................................................. 25 2.2 Wind Tunnel and Test Section .................................................. .30 2.3 Instrumentation and Data Acquisition .......................................... .33 2.4 Laser Profilometer ................................................................. 34 CHAPTER 3 - PROCEDURE AND DATA INTERPRETATION ........................... .46 3'.1 Water Tunnel Experiments ...................................................... .46 3.2 Preparation of Naphthalene Specimens ........................................ .47 3.3 Mass-Averaged Experiments .................................................... .49 3.4 Local Mass Transfer Experiments ...............................................54 CHAPTER 4 - FLOW, HEAT TRANSFER, AND PRESSURE DROP BEHAVIOR IN" LOUVERED-FIN" ARRAYS UNDER SPANWISE PERIODIC CONDITIONS ..................................................................... 58 v 4.1 Flow Visualization ................................................................ 58 4.2 Pressure Drop Results ............................................................ 63 4.3 Mass Transfer Results ............................................................ 65 4.4 Effects of Vortex Shedding on Mass Transfer ................................. 68 CHAPTER 5 - EFFECTS OF WALLS ON FLOW, HEAT TRANSFER, AND PRESSURE DROP IN LOUVERED-FIN ARRAyS ........................ 83 5.1 Flow Behavior Near Heat Exchanger Walls ................................... 83 5.1.1 Flow Efficiency and Velocity ........................................... 83 5.1.2 Flow Separation and Recirculation ..................................... 87 5.1.3 Flow Unsteadiness ....................................................... 88 5.2 Number of Columns Necessary to Model Flow through a Louvered-Fin Array ................................................................................ 89 5.3 Flow and Mass Transfer in Three-Column Arrays ............................92 5.3.1 Flow in Three-Column Arrays .......................................... 92 5.3.2 Mass Transfer in Three-Column Arrays ...............................94 CHAPTER 6 - LOCAL FLOW AND HEAT TRANSFER BEHAVIOR IN CONVEX- LOUVERED FIN" ARRAyS ................................................... 122 CHAPTER 7 - CONCLUSIONS ............................................................... 132 7.1 Summary of Results ........................................................... 132 7.1.1 Louvered Fins .......................................................... 132 7.1.1 a Flow, Heat Transfer, and Pressure Drop Behavior in Louvered-Fin Arrays Under Spanwise Periodic Conditions ....................................... 133 7.1.1b Effects of Walls on Flow, Heat Transfer, and Pressure Drop in Louvered-Fin Arrays ................ 134 vi 7. 1. 2 Convex-Louvered Fin Results ........................................ 136 7.2 Practical Applications .......................................................... 138 REFERENCES ........... q; •••.•••••••••••••••.•••••••••.....••.•••••••••••••••••••.•.•••••.•••••• 140 APPENDIX A - THE HEAT AND MASS ANALOGY ...................................... 144 A.1 Derivation of Heat and Mass Analogy ...................................... 144 A.2 Justification of Zero Transverse Velocity Assumption ................... 149 APPENDIX B - DATA REDUCTION EQUATIONS ........................................ 151 B.l Reynolds Number ............................................................. 151 B.2 Mass-Averaged Sherwood Number ........................................ 153 B.3 Modified Colburnj Factor ................................................... 154 B.4 Friction Factor and Euler Number .......................................... 155 B.5 Local Sherwood Number .................................................... 155 APPENDIX C - CALIBRATION PROCEDURE ............................................. 157 C.1 RID Calibration ................................................................. 157 C.2 Pressure Transmitter Calibration ............................................ 158 APPENDIXD- UNCERTAINTY ANALYSIS .............................................. 161 D.l Errors in Experimental Data.................................................. 161 D.2 Error Propagation and Uncertainty .......................................... 163 APPENDIX E - EXTRA FLOW VISUALIZATION PHOTOGRAPHS .................. 167 APPENDIX F - DEVELOPMENT OF A SIMPLE LOUVERED-FIN HEAT EXCHANGER MODEL ..................................................... 172 F.1 Relationship between Louvered Fins and Offset-Strip Fins ............. 172 F.2 Louvered-Fin Heat Exchanger Model ...................................... 173 vii LIST OF TABLES Page
Load more

Recommended publications
  • Airflow Simulations Around OA Intake Louver with Electronic Velocity
    Airflow Simulations around OA Intake Louver with Electronic Velocity Sensors Hwataik Han*1, Douglas P. Sullivan2 and William J. Fisk3 1 Professor, Kookmin University, Korea 2 Research Associate, Indoor Environment Department, Lawrence Berkeley National Laboratory, USA 3 Director, Indoor Environment Department, Lawrence Berkeley National Laboratory, USA Abstract It is important to control outdoor airflow rates into HVAC systems in terms of energy conservation and healthy indoor environment. Technologies are being developed to measure outdoor air (OA) flow rates through OA intake louvers on a real time basis. The purpose of this paper is to investigate the airflow characteristics through an OA intake louver numerically in order to provide suggestions for sensor installations. Airflow patterns are simulated with and without electronic air velocity sensors within cylindrical probes installed between louver blades or at the downstream face of the louver. Numerical results show quite good agreements with experimental data, and provide insights regarding measurement system design. The simulations indicate that velocity profiles are more spatially uniform at the louver outlet relative to between louver blades, that pressure drops imposed by the sensor bars are smaller with sensor bars at the louver outlet, and that placement of the sensor bars between louver blades substantially increases air velocities inside the louver. These findings suggest there is an advantage to placing the sensor bars at the louver outlet face. Keywords: ventilation; outdoor
    [Show full text]
  • Influence of Nusselt Number on Weight Loss During Chilling Process
    View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Elsevier - Publisher Connector Available online at www.sciencedirect.com Procedia Engineering 32 (2012) 90 – 96 I-SEEC2011 Influence of Nusselt number on weight loss during chilling process R. Mekprayoon and C. Tangduangdee Department of Food Engineering, Faculty of Engineering, King Mongkut’s University of Technology Thonburi, Bangkok, 10140, Thailand Elsevier use only: Received 30 September 2011; Revised 10 November 2011; Accepted 25 November 2011. Abstract The coupling of the heat and mass transfer occurs on foods during chilling process. The temperature of foods is reduced while weight changes with time. Chilling time and weight loss involve the operating cost and are affected by the design of refrigeration system. The aim of this work was to determine the correlations of Nu-Re-Pr and Sh-Re-Sc used to predict chilling time and weight loss, respectively for infinite cylindrical shape of food products. The correlations were obtained by estimating coefficients of heat and mass transfer based on analytical solution method and regression analysis of related dimensionless numbers. The experiments were carried out at different air velocities (0.75 to 4.3 m/s) and air temperatures (-10 to 3 ÛC) on different sizes of infinite cylindrical plasters (3.8 and 5.5 cm in diameters). The correlations were validated through experiments by measuring chilling time and weight loss of Vietnamese sausages compared with predicted values. © 2010 Published by Elsevier Ltd. Selection and/or peer-review under responsibility of I-SEEC2011 Open access under CC BY-NC-ND license.
    [Show full text]
  • Performance Measurements of a Unique Louver
    Performance Measurements Grant O. Musgrove Southwest Research Institute, of a Unique Louver Particle San Antonio, TX 78238 e-mail: [email protected] Separator for Gas Turbine Engines Karen A. Thole Mechanical and Nuclear Engineering Department, Solid particles, such as sand, ingested into gas turbine engines, reduce the coolant flow The Pennsylvania State University, in the turbine by blocking cooling channels in the secondary flow path. One method to University Park, PA 16802 remove solid particles from the secondary flow path is to use an inertial particle separa- tor because of its ability to incur minimal pressure losses in high flow rate applications. In this paper, an inertial separator is presented that is made up of an array of louvers Eric Grover followed by a static collector. The performance of two inertial separator configurations was measured in a unique test facility. Performance measurements included pressure Joseph Barker loss and collection efficiency for a range of Reynolds numbers and sand sizes. To comple- ment the measurements, both two-dimensional and three-dimensional computational United Technologies Corporation – results are presented for comparison. Computational predictions of pressure loss agreed Pratt & Whitney, with measurements at high Reynolds numbers, whereas predictions of sand collection East Hartford, CT 06108 efficiency for a sand size range 0–200lm agreed within 10% of experimental measure- ments over the range of Reynolds numbers. Collection efficiency values were measured to be as high as 35%, and pressure loss measurements were equivalent to less than 1% pres- sure loss in an engine application. [DOI: 10.1115/1.4007568] Introduction operating principle of inertial separators is to cause the particle- laden flow to abruptly change trajectory, whereby the particles do Aircraft gas turbines ingest solid particles during takeoff, land- not react to the change in flow direction due to their larger inertia ing, and while flying in dusty environments.
    [Show full text]
  • Analysis of Mass Transfer by Jet Impingement and Heat Transfer by Convection
    Analysis of Mass Transfer by Jet Impingement and Study of Heat Transfer in a Trapezoidal Microchannel by Ejiro Stephen Ojada A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Mechanical Engineering Department of Mechanical Engineering University of South Florida Major Professor: Muhammad M. Rahman, Ph.D. Frank Pyrtle, III, Ph.D. Rasim Guldiken, Ph.D. Date of Approval: November 5, 2009 Keywords: Fully-Confined Fluid, Sherwood number, Rotating Disk, Gadolinium, Heat Sink ©Copyright 2009, Ejiro Stephen Ojada i TABLE OF CONTENTS LIST OF FIGURES ii LIST OF SYMBOLS v ABSTRACT viii CHAPTER 1: INTRODUCTION AND LITERATURE REVIEW 1 1.1 Introduction (Mass Transfer by Jet Impingement ) 1 1.2 Literature Review (Mass Transfer by Jet Impingement) 2 1.3 Introduction (Heat Transfer in a Microchannel) 7 1.4 Literature Review (Heat Transfer in a Microchannel) 8 CHAPTER 2: ANALYSIS OF MASS TRANSFER BY JET IMPINGEMENT 15 2.1 Mathematical Model 15 2.2 Numerical Simulation 19 2.3 Results and Discussion 21 CHAPTER 3: ANALYSIS OF HEAT TRANSFER IN A TRAPEZOIDAL MICROCHANNEL 42 3.1 Modeling and Simulation 42 3.2 Results and Discussion 48 CHAPTER 4: CONCLUSION 65 REFERENCES 67 APPENDICES 79 Appendix A: FIDAP Code for Analysis of Mass Transfer by Jet Impingement 80 Appendix B: FIDAP Code for Fluid Flow and Heat Transfer in a Composite Trapezoidal Microchannel 86 i LIST OF FIGURES Figure 2.1a Confined liquid jet impingement between a rotating disk and an impingement plate, two-dimensional schematic. 18 Figure 2.1b Confined liquid jet impingement between a rotating disk and an impingement plate, three-dimensional schematic.
    [Show full text]
  • High Performance House Best Practices Guide
    New York State Energy Research & Development Authority High Performance House Best Practices Guide Design Intelligence for Energy Performance in Single Family Homes TABLE OF CON T EN T S High Performance House 1.1 Initial Work................................... 3 1.2 Process.......................................... 4 1.3 Testing........................................... 4 1.3.1 Building Construction.............................. 4 1.3.2 Building Form and Siting......................... 5 1.3.3 Passive Sustainable Strategies................ 6 1.3.4 Active Sustainable Strategies................... 14 1.4 Conclusions................................... 14 1.4.1 Additional Recommendations.................. 15 2 1.1 INitiAL WORK 1.1 Initial Work ON cti Preliminary analysis looked purely at geometric implications on energy use. This theoretical investigation tested a variety of building forms and found two general guidelines that govern performance. Across all building manipulations, results showed that forms minimizing volume and RODU T maximizing southern exposure perform best. This lines with rational thought; increased volume N increases the volume of required conditioned space, while maximizing southern exposure allows I for greatest winter solar gains and daylighting. Following this study, energy analysis was given for three, previously conceived housing designs – “Slope House”, “Underground House” and “X House”. In all cases, formal design (siting, building form, orientation) were given, fixed parameters. This proved a challenge to the energy optimization of the house. For the “Slope House”, building volume opens to the west without the benefit of southern expo- sure on the open face. Passive solar gains were minimal, with excessive shading on south facing windows. The majority of glazing is to the north, which effectively cuts the building’s thermal resistance/storage without the offsetting solar gains received on southern exposures.
    [Show full text]
  • A Review of Models for Bubble Clusters in Cavitating Flows Daniel Fuster
    A review of models for bubble clusters in cavitating flows Daniel Fuster To cite this version: Daniel Fuster. A review of models for bubble clusters in cavitating flows. Flow, Turbulence and Combustion, Springer Verlag (Germany), 2018, 10.1007/s10494-018-9993-4. hal-01913039 HAL Id: hal-01913039 https://hal.sorbonne-universite.fr/hal-01913039 Submitted on 5 Nov 2018 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. Journal of Flow Turbulence and Combustion manuscript No. (will be inserted by the editor) D. Fuster A review of models for bubble clusters in cavitating flows Received: date / Accepted: date Abstract This paper reviews the various modeling strategies adopted in the literature to capture the response of bubble clusters to pressure changes. The first part is focused on the strategies adopted to model and simulate the response of individual bubbles to external pressure variations discussing the relevance of the various mechanisms triggered by the appearance and later collapse of bubbles. In the second part we review available models proposed for large scale bubbly flows used in different contexts including hydrodynamic cavitation, sound propagation, ultrasonic devices and shockwave induced cav- itation processes.
    [Show full text]
  • Damper Application Guide 1.” 1 Common 2 2 + Hot
    Control of Dampers ®® INDEX I. INTRODUCTION A. Economizer Systems ............................................................................................................ 3 B. Indoor Air Quality ...................................................................................................................3 C. Damper Selection ..................................................................................................................3 II. DAMPER SELECTION A. Opposed and Parallel Blade Dampers ..................................................................................3 B. Flow Characteristics...............................................................................................................4 C. Damper Authority ..................................................................................................................4 D. Combined Flow ......................................................................................................................6 III. ADDITIONAL CONSIDERATIONS A. Economizer Systems .............................................................................................................6 B. Building Pressure ...................................................................................................................8 C. Mixed Air Temperature Control ..............................................................................................8 D. Actuators - General ................................................................................................................8
    [Show full text]
  • IAQ Economizer LOGIC BOX
    IAQ Economizer LOGIC BOX Split-system Economizing/Indoor Air Quality/CO Alarm Activated Works on forced air systems, with or without air conditioning installed Enables cost saving cooling strategy: Expensive mechanical cooling can be set at a higher temperature Fresh Air Cooling can be set at a lower temperature Supports a variety Indoor Air Quality configurations: Continuous introduction Timed introduction CO2 or VOC sensor activated introduction Provides alarm activated fresh air introduction supporting CO or other alarm installations Occupant interface provides easy override, along with readiness, damper and fault status, (continuous fault detection) Operational tests can be conducted from within the conditioned space Quick connect wiring harnesses provide fast, correct termination FRESH AIR MANUFACTURING CO. FAMCO IAQ Economizer Famcoiaq.com 649 N. Ralstin St., Meridian, ID 83642 * (208)884-8931 * (800)-234-1903 * FAX: (208)884-8943 IAQ Economizer ECONOMIZER SYSTEM Damper Actuator Exhaust Damper Transformer Thermostat Logic Literature Box Cables Damper Box Actuator – Honeywell MS8105A1030, 24 VAC, 44 lb-in torque Outdoor thermostat- Dayton RLZ94A Nema 4X, Range 30º-110º F Transformer – RIB Functional Devices, Inc. TR50VA005 , 50VA All required System Cables are provided: • Power 40’ • Furnace 40’, plenum rated, HVAC industry standard color coding for furnace board termination • Damper Box 50’, plenum rated • Outdoor thermostat, 70’ , shielded, non polarity sensitive FRESH AIR MANUFACTURING CO. FAMCO IAQ Economizer
    [Show full text]
  • Building Applications, Opportunities and Challenges of Active Shading Systems: a State-Of-The-Art Review
    energies Review Building Applications, Opportunities and Challenges of Active Shading Systems: A State-Of-The-Art Review Joud Al Dakheel and Kheira Tabet Aoul * ID Architectural Engineering Department, United Arab Emirates University, P.O. Box 15551 Al Ain, UAE; [email protected] * Correspondence: [email protected]; Tel.: +971-566-433-648 Academic Editor: Arman Hashemi Received: 28 June 2017; Accepted: 4 August 2017; Published: 23 October 2017 Abstract: Active shading systems in buildings have emerged as a high performing shading solution that selectively and optimally controls daylight and heat gains. Active shading systems are increasingly used in buildings, due to their ability to mainly improve the building environment, reduce energy consumption and in some cases generate energy. They may be categorized into three classes: smart glazing, kinetic shading and integrated renewable energy shading. This paper reviews the current status of the different types in terms of design principle and working mechanism of the systems, performance, control strategies and building applications. Challenges, limitations and future opportunities of the systems are then discussed. The review highlights that despite its high initial cost, the electrochromic (EC) glazing is the most applied smart glazing due to the extensive use of glass in buildings under all climatic conditions. In terms of external shadings, the rotating shading type is the predominantly used one in buildings due to its low initial cost. Algae façades and folding shading systems are still emerging types, with high initial and maintenance costs and requiring specialist installers. The algae façade systems and PV integrated shading systems are a promising solution due to their dual benefits of providing shading and generating electricity.
    [Show full text]
  • BIM Handbook
    BIM Handbook A Guide to Building Information Modeling for Owners, Managers, Designers, Engineers, and Contractors Chuck Eastman Paul Teicholz Rafael Sacks Kathleen Liston John Wiley & Sons, Inc. BIM Handbook: A Guide to Building InformationModeling for Owners, Managers,Designers, Engineers, and Contractors. Chuck Eastman, Paul Teicholz, Rafael Sacks and Kathleen Liston Copyright © 2008 John Wiley & Sons, Inc. ffirs.indd i 1/3/08 12:32:13 PM This book is printed on acid-free paper. ϱ Copyright © 2008 by John Wiley & Sons, Inc. All rights reserved Published by John Wiley & Sons, Inc., Hoboken, New Jersey Published simultaneously in Canada No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, scanning, or otherwise, except as permitted under Section 107 or 108 of the 1976 United States Copyright Act, without either the prior written permission of the Publisher, or authorization through payment of the appropriate per-copy fee to the Copyright Clearance Center, 222 Rosewood Drive, Danvers, MA 01923, (978) 750-8400, fax (978) 646-8600, or on the web at www.copyright.com. Requests to the Publisher for permission should be addressed to the Permissions Department, John Wiley & Sons, Inc., 111 River Street, Hoboken, NJ 07030, (201) 748-6011, fax (201) 748-6008, or online at www.wiley.com/go/permissions. Limit of Liability/Disclaimer of Warranty: While the publisher and the author have used their best efforts in preparing this book, they make no representations or warranties with respect to the accuracy or completeness of the contents of this book and specifi cally disclaim any implied warranties of merchantability or fi tness for a particular purpose.
    [Show full text]
  • Studio Education for Integrated Practice Using
    STUDIO EDUCATION FOR INTEGRATED PRACTICE USING BUILDING INFORMATION MODELING A Dissertation by OZAN ÖNDER ÖZENER Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY December 2009 Major Subject: Architecture STUDIO EDUCATION FOR INTEGRATED PRACTICE USING BUILDING INFORMATION MODELING A Dissertation by OZAN ÖNDER ÖZENER Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY Approved by: Chair of Committee, Mark J. Clayton Committee Members, Robert E. Johnson Wei Yan José L. Fernández-Solís Head of Department, Glen Mills December 2009 Major Subject: Architecture iii ABSTRACT Studio Education for Integrated Practice Using Building Information Modeling. (December 2009) Ozan Önder Özener, B.Arch., Istanbul Technical University; M.Arch., Istanbul Technical University Chair of Advisory Committee: Dr. Mark J. Clayton This research study posits that an altered educational approach to design studio can produce future professionals who apply Building Information Modeling (BIM) in the context of Integrated Project Delivery (IPD) to execute designs faster and produce designs that have demonstrably higher performance. The combination of new technologies and social/contractual constructs represents an alternative to the established order for how to design and how to teach designers. BIM emerges as the key technology for facilitating IPD by providing consistent, computable and interoperable information essential to all AEC teams. The increasing trend of BIM adoption is an opportunity for the profession to dramatically change its processes and may potentially impact patterns of responsibility and the paradigms of design.
    [Show full text]
  • Who Was Who in Transport Phenomena
    l!j9$i---1111-1111-.- __microbiographies.....::..._____:__ __ _ ) WHO WAS WHO IN TRANSPORT PHENOMENA R. B YRON BIRD University of Wisconsin-Madison• Madison, WI 53706-1691 hen lecturing on the subject of transport phenom­ provide the "glue" that binds the various topics together into ena, I have often enlivened the presentation by a coherent subject. It is also the subject to which we ulti­ W giving some biographical information about the mately have to tum when controversies arise that cannot be people after whom the famous equations, dimensionless settled by continuum arguments alone. groups, and theories were named. When I started doing this, It would be very easy to enlarge the list by including the I found that it was relatively easy to get information about authors of exceptional treatises (such as H. Lamb, H.S. the well-known physicists who established the fundamentals Carslaw, M. Jakob, H. Schlichting, and W. Jost). Attention of the subject, but that it was relatively difficult to find could also be paid to those many people who have, through accurate biographical data about the engineers and applied painstaking experiments, provided the basic data on trans­ scientists who have developed much of the subject. The port properties and transfer coefficients. documentation on fluid dynamicists seems to be rather plen­ tiful, that on workers in the field of heat transfer somewhat Doing accurate and responsible investigations into the history of science is demanding and time-consuming work, less so, and that on persons involved in diffusion quite and it requires individuals with excellent knowledge of his­ sparse.
    [Show full text]