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Author :
Publisher :
ISBN 13 : 9780768004434
Total Pages : 80 pages
Book Rating : 4.0/5 (44 download)
Download or read book Aerodynamic Testing of Road Vehicles in Open Jet Wind Tunnels written by and published by . This book was released on 1999 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Road Vehicle Aerodynamics Forum Committee
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (137 download)
Download or read book AERODYNAMIC TESTING OF ROAD VEHICLES - OPEN THROAT WIND TUNNEL ADJUSTMENT written by Road Vehicle Aerodynamics Forum Committee and published by . This book was released on 1994 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: As a simulation of road driving, wind tunnel testing of full-size vehicles produces certain errors in the aerodynamic forces, aerodynamic moments, and surface pressures. The magnitude of these errors, in general, depends on the following: aFlow quality bDetermination of the reference dynamic pressure cWind tunnel floor boundary layer dTest section geometry and position of the car within that geometry eShape of the vehicle fBlockage ratio: The ratio of the cross-sectional area of the vehicle to the cross-sectional area of the wind tunnel nozzle gWheel rotation hInternal flow in the modelThe SAE Standards Committee, Open Throat Wind Tunnel Adjustments had as a goal to document the knowledge of the influence of model interference on wind tunnel test results for automotive open jet wind tunnels. This document contains the following information related to this subject: aDesign data of open throat wind tunnels bA summary of published and unpublished test data cDocumentation and theoretical explanation of various blockage correction procedures for automotive tests dCritical evaluation of blockage correction procedures, especially in relation to other influences, such as test section geometry, position of the car, floor boundary layer, etc. eRecommendation of a calibration procedure to determine the effect of blockage and other influences in each individual wind tunnelAn initial goal of the committee, to recommend a well proven correction procedure for automotive open jet wind tunnels based on blockage theory (Figure 1), could not be established at this time. The reason is that, besides blockage, other factors, such as test section geometry, are at least as influential as pure blockage. As these influential parameters are wind tunnel specific, a general valid adjustment procedure is presently not available. The only change to this document was the title.
Author : Society of Automotive Engineers
Publisher :
ISBN 13 :
Total Pages : 63 pages
Book Rating : 4.:/5 (988 download)
Download or read book Surface Vehicle Information Report written by Society of Automotive Engineers and published by . This book was released on 1993 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt: The SAE Information Report is confined to the aerodynamic requirements of wind-tunnel automotive testing, which involves force, pressure, and velocity measurements on the vehicle surface as well as the surrounding flow-field.
Author : Road Vehicle Aerodynamics Forum Committee
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (137 download)
Download or read book AERODYNAMIC TESTING OF ROAD VEHICLESTESTING METHODS AND PROCEDURES written by Road Vehicle Aerodynamics Forum Committee and published by . This book was released on 1993 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The scope of this SAE Information Report is confined to wind-tunnel testing, although it is recognized that many aspects of the aerodynamic characteristics of road vehicles can be investigated in other test facilities (such as water-tanks) or, especially, on the road. For example, coastdown testing is often used to determine aerodynamic drag (either in isolation or as part of the total resistance), and artificial gust generators are used to investigate the sensitivity of vehicles to cross-wind gusts.Also excluded from the present Report are climatic wind-tunnel tests of road vehicles, which are defined in more detail in Section 3.The Report covers the aerodynamic requirements of a wind-tunnel for automotive testing, together with the facility equipment needed and the requirements affecting the test vehicle or model. The test methods and procedures described here include those for six-component force measurements and measurements of pressures and velocities both on the vehicle/model surface and in the surrounding flow-field.Flow visualization techniques are outlined, with reference to the detailed coverage in a related SAE Information Report (2). In addition, the reduction, analysis, and presentation of wind-tunnel data are considered, with further references to associated SAE Information Reports (3,4) on corrections to be applied for wind-tunnel blockage effects. Finally, methods are discussed for the validation of the wind-tunnel data, e.g., by tunnel-to-road correlation studies.As already indicated, this document has been prepared in conjunction with a number of other SAE Information Reports and Recommended Practices (15), each of which provides greater detail than is given here on its particular aspect of automotive aerodynamic testing.
Author : Road Vehicle Aerodynamics Forum Committee
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (137 download)
Download or read book Aerodynamic Testing of Road Vehicles - Testing Methods and Procedures written by Road Vehicle Aerodynamics Forum Committee and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The scope of this SAE Information Report is confined to wind-tunnel testing, although it is recognized that many aspects of the aerodynamic characteristics of road vehicles can be investigated in other test facilities (such as water-tanks) or, especially, on the road. For example, coastdown testing is often used to determine aerodynamic drag (either in isolation or as part of the total resistance), and artificial gust generators are used to investigate the sensitivity of vehicles to cross-wind gusts.Also excluded from the present Report are climatic wind-tunnel tests of road vehicles, which are defined in more detail in Section 3.The Report covers the aerodynamic requirements of a wind-tunnel for automotive testing, together with the facility equipment needed and the requirements affecting the test vehicle or model. The test methods and procedures described here include those for six-component force measurements and measurements of pressures and velocities both on the vehicle/model surface and in the surrounding flow-field.Flow visualization techniques are outlined, with reference to the detailed coverage in a related SAE Information Report (2). In addition, the reduction, analysis, and presentation of wind-tunnel data are considered, with further references to associated SAE Information Reports (3,4) on corrections to be applied for wind-tunnel blockage effects. Finally, methods are discussed for the validation of the wind-tunnel data, e.g., by tunnel-to-road correlation studies.As already indicated, this document has been prepared in conjunction with a number of other SAE Information Reports and Recommended Practices (1-5), each of which provides greater detail than is given here on its particular aspect of automotive aerodynamic testing. Much of the information presented in this document is mature and unlikely to change in the foreseeable future. The remainder - relating particularly to moving ground simulation and blockage correction techniques - is nevertheless judged by the Road Vehicle Aerodynamics Committee to be of historical significance. To supplement it contents, users are encouraged to consult more recent revisions of J1252, J1594, and J2881, as well as relevant SAE conference papers published since the 1993 issue of this document.
Author : Alan Pope
Publisher :
ISBN 13 :
Total Pages : 542 pages
Book Rating : 4.:/5 (89 download)
Download or read book Wind-tunnel Testing written by Alan Pope and published by . This book was released on 1954 with total page 542 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jewel B. Barlow
Publisher : Wiley-Interscience
ISBN 13 :
Total Pages : 736 pages
Book Rating : 4.3/5 (97 download)
Download or read book Low-Speed Wind Tunnel Testing written by Jewel B. Barlow and published by Wiley-Interscience. This book was released on 1999-02-22 with total page 736 pages. Available in PDF, EPUB and Kindle. Book excerpt: Low speed wind tunnels are used to test vehicles which travel at a rate of under 300mph, such as automobiles, and propellor aircraft. This book covers aspects of the technology from the design and use of wind tunnels to the instrumentation used.
Author : B. H. Goethert
Publisher :
ISBN 13 :
Total Pages : 420 pages
Book Rating : 4.X/5 (3 download)
Download or read book Transonic Wind Tunnel Testing written by B. H. Goethert and published by . This book was released on 2007 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt: Numerous aspects of transonic aerodynamics include wall interference corrections in conventional wind tunnels, subsonic flow in a variety of wind tunnels, and test results from transonic wind tunnels. 1961 edition.
Author : Wolf-Heinrich Hucho
Publisher : Elsevier
ISBN 13 : 1483102076
Total Pages : 577 pages
Book Rating : 4.4/5 (831 download)
Download or read book Aerodynamics of Road Vehicles written by Wolf-Heinrich Hucho and published by Elsevier. This book was released on 2013-10-22 with total page 577 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aerodynamics of Road Vehicles details the aerodynamics of passenger cars, commercial vehicles, sports cars, and race cars; their external flow field; as well as their internal flow field. The book, after giving an introduction to automobile aerodynamics and some fundamentals of fluid mechanics, covers topics such as the performance and aerodynamics of different kinds of vehicles, as well as test techniques for their aerodynamics. The book also covers other concepts related to automobiles such as cooling systems and ventilations for vehicles. The text is recommended for mechanical engineers and phycisists in the automobile industry who would like to understand more about aerodynamics of motor vehicles and its importance on the field of road safety and automobile production.
Author : Oliver Fischer
Publisher : Springer
ISBN 13 : 3658213795
Total Pages : 167 pages
Book Rating : 4.6/5 (582 download)
Download or read book Investigation of Correction Methods for Interference Effects in Open-Jet Wind Tunnels written by Oliver Fischer and published by Springer. This book was released on 2018-03-13 with total page 167 pages. Available in PDF, EPUB and Kindle. Book excerpt: Oliver Fischer analyzes the interference effects occurring in free-stream wind tunnels as well as their correction and simulation. With this work, the investigated correction method and the comparability of its results as well as flow simulation results are improved. The model wind tunnel of the IVK, University of Stuttgart, is simulated in various wind tunnel configurations. The application of a correction procedure to the corresponding experimental data from the model wind tunnel of the IVK is examined. These correction results are directly comparable with interference-free simulation results and thus allow a conclusion on the functionality of the correction method. Based on these findings, this thesis proposes a modification of the correction method that improves the comparability of corrected experimental results and CFD simulations in idealized test conditions. About the Author Oliver Fischer works as an engineer in aerodynamics development for a renowned German automobile manufacturer.
Author : Colin Britcher
Publisher : Academic Press
ISBN 13 : 0128181001
Total Pages : 672 pages
Book Rating : 4.1/5 (281 download)
Download or read book Wind Tunnel Test Techniques written by Colin Britcher and published by Academic Press. This book was released on 2023-10-20 with total page 672 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wind Tunnel Test Techniques: Design and Use at Low and High Speeds with Statistical Engineering Applications provides an up-to-date treatment of the topic. Beginning with a brief history of wind tunnels and its types and uses, the book goes on to cover subsonic, supersonic and hypersonic wind tunnel design and construction, calibration, boundary corrections, flow quality assessment, pressure surveys, and dynamic testing. It also focuses on wind tunnel facilities, making it useful for both the designer and operator. Engineers and graduate students in aerospace, automotive and similar programs will find this book useful in their work with experimental aerodynamics, gas dynamics, facility design and performance. Deals with a broad range of flow speeds in wind tunnels, from low speed to high speed Provides a discussion of similarity laws as well as material on statistical analysis Includes coverage on facility-to-facility and facility-to-CFD correlation Presents advanced topics such as cryogenic wind tunnels, ground simulation in automotive testing, and propulsion testing
Author : Thomas Christian Schuetz
Publisher : SAE International
ISBN 13 : 0768079772
Total Pages : 1312 pages
Book Rating : 4.7/5 (68 download)
Download or read book Aerodynamics of Road Vehicles written by Thomas Christian Schuetz and published by SAE International. This book was released on 2015-12-30 with total page 1312 pages. Available in PDF, EPUB and Kindle. Book excerpt: The detailed presentation of fundamental aerodynamics principles that influence and improve vehicle design have made Aerodynamics of Road Vehicles the engineer’s “source” for information. This fifth edition features updated and expanded information beyond that which was presented in previous releases. Completely new content covers lateral stability, safety and comfort, wind noise, high performance vehicles, helmets, engine cooling, and computational fluid dynamics. A proven, successful engineering design approach is presented that includes: • Fundamentals of fluid mechanics related to vehicle aerodynamics • Essential experimental results that are the ground rules of fluid mechanics • Design strategies for individual experimental results • General design solutions from combined experimental results The aerodynamics of passenger cars, commercial vehicles, motorcycles, sports cars, and race cars is dealt with in detail, inclusive of systems, testing techniques, measuring and numerical aerodynamics methods and simulations that significantly contribute to vehicle development. Aerodynamics of Road Vehicles is an excellent reference tool and an indispensable source for the industry’s vehicle engineers, designers, and researchers, as well as for enthusiasts, students, and those working in academia or government regulatory agencies.
Author :
Publisher : Amer Inst of Aeronautics &
ISBN 13 : 9781563476501
Total Pages : 15 pages
Book Rating : 4.4/5 (765 download)
Download or read book Recommended Practice written by and published by Amer Inst of Aeronautics &. This book was released on 2003 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wind tunnel testing is a critical component in the development of aerodynamic vehicles and associated technologies. While the time and expense of wind tunnel testing is significant, it is an essential risk reduction tool. This book describes the various aspects of test program development, implementation, and management.
Author : Alan Pope
Publisher : John Wiley & Sons
ISBN 13 :
Total Pages : 496 pages
Book Rating : 4.3/5 (91 download)
Download or read book High Speed Wind Tunnel Testing written by Alan Pope and published by John Wiley & Sons. This book was released on 1965-01-15 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Carles Martínez Vallés
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (112 download)
Download or read book Wind Tunnels as an Aerodynamic Testing Tool in Formula 1 written by Carles Martínez Vallés and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This project aims to enable the reader to acquire the necessary knowledge to fully understand the main facts and working principles of modern wind tunnels and their application in F1. In addition one of the goals is to enable the reader to get an insight of the motorsport world, realizing how important aerodynamics are in relation to the global performance and handling of a race car. Throughout the entire project particular emphasis has been made to illustrate the importance of wind tunnels and how they are necessary even in teams or companies with powerful CFD systems. Despite the fast advances of IT technologies currently every part of high level motorsports aerodynamics cannot be understood without wind tunnels. Starting in an explanation about why the CFD simulation are still not developed enough to be able to be used as the sole aerodynamic design tool in the designing process of an F1 and explaining how CFD and wind tunnels complement each other the project is then divided into two different parts: Part I: The first part focuses in the theory and definitions behind wind tunnel and aerodynamic testing in general. In order to be able to understand the design and characteristics of wind tunnels it is first necessary to describe the aerodynamics principles and their relation to race car designs. All these explanations have been accompanied by real life examples and explained using data measured directly in real race cars. Everything related to wind tunnel testing has been described in this part. Starting from a description of all the different types of tunnels (classified according to different criteria). The main instrumentation required for wind tunnel testing has also been described in this section as well as the differences between scale-model and full size testing with the positive and negative points of each method. An exhaustive listing with the main facts of all the different F1 tunnel facilities has been included, paying special attention to the Epsilon Euskadi headquarters which include the best wind tunnel dedicated to motorsports in the Spanish territory and possibly one of the best worldwide. Together with the Toyota facilities in Germany, they were among the few that were intended to provide the rental of facilities per hour (as a way of self-financing, his topic is extensively dealt with in the economic part of the study). Part II: The second part includes different practical test and experimentations. Firstly based on real track data of a World Series by Renault 3.5 car, an exhaustive study of the DRS systems and its effects in car performance has been carried out. During all the data analysis references to F1 innovations and regulations are made to help the reader immerse into the racing world. In addition the necessary tools and equations necessary to determine the theoretical top speed of any car knowing their characteristics has also been described and applied to the same World Series race car. As mentioned before in this summary during all these sections of the project it has been a priority to give as much real racing information and data as possible trying to give the reader a real experience of the tools race and design engineers use. Without any hesitation the most important part test of the practical part focuses on the World series car rear-view mirrors being tested in different wind tunnel facilities. The aerodynamic study has been realized using different methodologies and tested in different tunnel types. This whole process is extensively detailed in order to enable the reader if desired to be able to carry this same tests (all the necessary tools and calculations included) Lastly, note that this project is not intended under any circumstances to provide numerical values that can be used in real applications as it focuses more on concepts and is intended to be a reference on wind tunnel experimental methodology rather than in the absolute results.
Author :
Publisher : SAE International
ISBN 13 : 9781560918158
Total Pages : 108 pages
Book Rating : 4.9/5 (181 download)
Download or read book Closed-test-section Wind Tunnel Blockage Corrections for Road Vehicles written by and published by SAE International. This book was released on 1996 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Kenneth W. Mort
Publisher :
ISBN 13 :
Total Pages : 18 pages
Book Rating : 4.:/5 (31 download)
Download or read book Full-scale Wind-tunnel Investigation of the Longitudinal Aerodynamic Characteristics of the M2-F1 Lifting Body Flight Vehicle written by Kenneth W. Mort and published by . This book was released on 1966 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
