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Automotive Aerodynamics by Joseph Katz

Title Automotive Aerodynamics
Author Joseph Katz
Publisher John Wiley & Sons
Release 2016-07-12
Category Technology & Engineering
Total Pages 608
ISBN 1119185726
Language English, Spanish, and French
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Book Summary:

The automobile is an icon of modern technology because it includes most aspects of modern engineering, and it offers an exciting approach to engineering education. Of course there are many existing books on introductory fluid/aero dynamics but the majority of these are too long, focussed on aerospace and don’t adequately cover the basics. Therefore, there is room and a need for a concise, introductory textbook in this area. Automotive Aerodynamics fulfils this need and is an introductory textbook intended as a first course in the complex field of aero/fluid mechanics for engineering students. It introduces basic concepts and fluid properties, and covers fluid dynamic equations. Examples of automotive aerodynamics are included and the principles of computational fluid dynamics are introduced. This text also includes topics such as aeroacoustics and heat transfer which are important to engineering students and are closely related to the main topic of aero/fluid mechanics. This textbook contains complex mathematics, which not only serve as the foundation for future studies but also provide a road map for the present text. As the chapters evolve, focus is placed on more applicable examples, which can be solved in class using elementary algebra. The approach taken is designed to make the mathematics more approachable and easier to understand. Key features: Concise textbook which provides an introduction to fluid mechanics and aerodynamics, with automotive applications Written by a leading author in the field who has experience working with motor sports teams in industry Explains basic concepts and equations before progressing to cover more advanced topics Covers internal and external flows for automotive applications Covers emerging areas of aeroacoustics and heat transfer Automotive Aerodynamics is a must-have textbook for undergraduate and graduate students in automotive and mechanical engineering, and is also a concise reference for engineers in industry.

Title Race Car Aerodynamics
Author J Katz
Publisher Robert Bentley, Incorporated
Release 1996-03-08
Category Transportation
Total Pages 280
ISBN 9780837601427
Language English, Spanish, and French
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Book Summary:

The first book to summarize the secrets of the rapidly developing field of high-speed vehicle design. From F1 to Indy Car, Drag and Sedan racing, this book provides clear explanations for engineers who want to improve their design skills and enthusiasts who simply want to understand how their favorite race cars go fast. Explains how aerodynamics win races, why downforce is more important than streamlining and drag reduction, designing wings and venturis, plus wind tunnel designs and more.

Title Important Factors for Accurate Scale Resolving Simulations of Automotive Aerodynamics
Author Petter Ekman
Publisher Linköping University Electronic Press
Release 2020-04-02
Category Electronic books
Total Pages 96
ISBN 917929863X
Language English, Spanish, and French
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Book Summary:

Road transports are responsible for almost 18 % of the greenhouse gas emission in Europe and are today the leading cause of air pollution in cities. Aerodynamic resistance has a significant effect on fuel consumption and hence the emission of vehicles. For electric vehicles, emissions are not affected by the aerodynamics as such but instead have a significant effect on the effective range of the vehicle. In 2017, a new measurement procedure was introduced, Worldwide Harmonized Light Vehicles Test Procedure (WLTP), for measuring emissions, fuel consumption, and range. This procedure includes a new test cycle with increased average driving speed compared to the former procedure, which thereby increases the importance of the aerodynamic resistance, as it drastically increases with speed. A second effect is that the exact car configuration sold to the customer needs to be certified in terms of fuel consumption and emissions. The result is that every possible combination of optional extras, which might affect the aerodynamic resistance, needs to be aerodynamically analyzed and possibly improved. From 2021, the European Commission will introduce stricter emission regulations for new passenger cars, with the fleet-wide average lowered to 95 grams CO2=km, which puts an even higher demand on achieving efficient aerodynamics. Virtual development of the aerodynamics of road vehicles is today used to a great extent, using Computational Fluid Dynamics, as it enables faster and cheaper development. However, achieving high accuracy for the prediction of the flow field and aerodynamic forces is challenging, especially given the complexity of both the vehicle geometry in itself and the surrounding flow field. Even for a simplified generic bluff body, accurately predicting the flow field and aerodynamic forces is a challenge. The main reason for this challenge of achieving results with high accuracy is the prediction of the complex behavior of turbulence. Scale-resolving simulation (SRS) methods, such as Large Eddy Simulation (LES), where most of the turbulent structures are resolved has in many studies shown high accuracy but unfortunately to a very high computational cost. It is primarily the small turbulent structures within the near-wall region that requires a _ne resolution in both space (the mesh) and in time. This fine resolution is the reason for the very high computational cost and makes LES unfeasible for practical use in industrial aerodynamic development at present and in the near future. By modeling the turbulent structures within the near-wall region using a Reynolds-Averaged Navier-Stokes (RANS) model, and resolving the turbulence outside the region with a LES model, a coarser resolution is possible to use, resulting in significantly lower computational cost. Which used RANS model is of high importance, and especially how much turbulent viscosity the model generates, as too high values can result in suppression of the resolved turbulence. The transitioning between the RANS and LES regions have a significant effect on the results. Faster transition enables more resolved turbulence, favorable for higher accuracy, but needs to be balanced with sufficient shielding of the RANS region. If resolving the turbulence occurs within the near-wall region, and the mesh is not sufficiently fine, it can result in poor accuracy. By increasing the time-step size and disregarding best-practice guides, the computational cost can be significantly reduced. The accuracy is reasonably insensitive to the larger time step sizes until a certain degree, thereby enabling computationally cheaper SRS to achieve high accuracy of aerodynamic predictions needed to meet present and future emission regulations.

Title Competition Car Aerodynamics 3rd Edition
Author Simon McBeath
Publisher Veloce Publishing
Release 2017-03-17
Category Sports & Recreation
Total Pages 320
ISBN 9781787111028
Language English, Spanish, and French
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Book Summary:

The field of aerodynamics has had an increasingly significant effect on performance enhancement over the past 50 years. Competition Car Aerodynamics 3rd Edition continues the practical, hands-on approach of its popular predecessors to cover all aspects of motorsport aerodynamics, with more CFD and wind tunnel project material and case studies. Author Simon McBeath tackles aerodynamic theory in a comprehensive, yet comprehensible, way with his unprecedented access to state of the art computational fluid dynamics (CFD) techniques. McBeath also explores aerodynamics with the MIRA full-scale wind tunnel in the UK. Photographs, graphs, CFD-generated images, and wind tunnel data--much of which has appeared in the successful Aerobytes series in Racecar Engineering--are used to explain with unrivaled clarity how aerodynamic performance benefits are obtained in practice. With case studies from Formula 1, sports prototypes, Formula 3, GT and saloon cars, club single seaters, and karts, this book will appeal to anyone, whether a designer, competitor, student, or armchair enthusiast, wishing to gain an understanding of aerodynamics, and how it can benefit the performance of all types of competition cars.

Title Progress in Vehicle Aerodynamics and Thermal Management
Author Jochen Wiedemann
Publisher Springer
Release 2017-12-04
Category Technology & Engineering
Total Pages 266
ISBN 3319678221
Language English, Spanish, and French
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Book Summary:

The books presents latest information about new car developments, new or improved testing techniques and new or improved calculation procedures. Presenters are from industry and academia.

Title The International Vehicle Aerodynamics Conference
Author IMechE
Publisher Woodhead Publishing
Release 2014-11-12
Category Technology & Engineering
Total Pages 272
ISBN 0081002459
Language English, Spanish, and French
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Book Summary:

Aerodynamics has never been more central to the development of cars, commercial vehicles, motorbikes, trains and human powered vehicles, driven by the need for efficiency: reducing carbon dioxide emissions, reducing fuel consumption, increasing range and alleviating problems associated with traffic congestion. Reducing vehicle weight makes it more challenging to ensure that they are stable and handle well over a wide range of environmental conditions. Lighter structures are also more vulnerable to aerodynamically induced vibration. Alongside this, customers demand an environment that is quiet, comfortable and maintains their vision of the world around them in all weathers. These aims must be met by designing vehicles that engage customers emotionally, promoting the brand values of manufacturers and operators. This can only be done by collaboration between designers and aerodynamicists. Examine the latest developments in vehicle aerodynamic development Explore opportunities to network and share experiences around different areas Focus on future challenges and the engineering knowledge and technology required to resolve them Discuss other areas of development including handling and stability, tyre aerodynamics and modelling, aeroacoustics and fluid structure interaction

Title Aerodynamic Study on the Vehicle Shape Parameters with Respect to Ground Simulation
Author Chenyi Zhang
Publisher Springer Nature
Release 2021-02-24
Category Technology & Engineering
Total Pages 115
ISBN 3658334398
Language English, Spanish, and French
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Book Summary:

Chenyi Zhang analyzes the influences of moving ground simulation technique in wind tunnel tests. In his work, the classical investigations on vehicle shape parameters with fixed ground conditions are reviewed with modern moving ground simulation technique. The investigations are performed by means of CFD simulations and model scale wind tunnel tests at IFS, University of Stuttgart. The shape parameters of two reference vehicles – the DrivAer and the AeroSUV model with notchback, fastback and estate back – are varied and investigated. The author presents different results in drag and lift for the varied geometry parameters. The classical results of the parametric study on the vehicle basic shapes for vehicle aerodynamics could be complemented with the findings of the present research.

Automotive Engineering by Source Wikipedia

Title Automotive Engineering
Author Source Wikipedia
Publisher University-Press.org
Release 2013-09
Category
Total Pages 96
ISBN 9781230560656
Language English, Spanish, and French
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Book Summary:

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pages: 43. Chapters: 4-poster, 7 post shaker, Automobile drag coefficient, Automotive aerodynamics, Automotive Hemming, Axle track, Body flex, Body in white, Calspan, Center axle disconnect, CVTCS, Dana 30, Dana 35, Dana 44, Dana 50, Dana 60, Dana 70, Dana 80, Dana S 110, Drive by wire, Dunton Technical Centre, Ford 8.8 axle, Ford 9-inch axle, Formula Student, Ground pressure, IAV, ISO 11898, ISO 16750, Modular vehicle, Motorcycle design, Nira Dynamics AB, Noise, vibration, and harshness, Ohio State University Center for Automotive Research, Ride height, Sterling 10.5 axle, Swept path analysis, The Machine That Changed the World (book), Twin-Traction Beam, Vehicle dynamics, Vehicle engineering, Weight transfer, Wheelbase, Wirth Research, Wreck Racing. Excerpt: The drag coefficient is a common measure in automotive design as it pertains to aerodynamic. Drag is a force that acts parallel and in the same direction as the airflow. The drag coefficient of an automobile impacts the way the automobile passes through the surrounding air. When automobile companies design a new vehicle they take into consideration the automobile drag coefficient in addition to the other performance characteristics. Aerodynamic drag increases with the square of speed; therefore a low value is preferable to a high one. Reducing the drag coefficient in an automobile affects the performance of the vehicle as it pertains to speed and fuel efficiency. There are many different ways to reduce the drag of a vehicle. Another common way to measure the drag of the vehicle is through the drag area. The reduction of drag in road vehicles has led to increases in the top speed of the vehicle and the vehicles fuel efficiency, as well as many other performance characteristics, such as handling and acceleration. The two main factors that impact drag are the frontal area of the...

Title Flight Vehicle Aerodynamics
Author Mark Drela
Publisher MIT Press
Release 2014-02-07
Category Science
Total Pages 304
ISBN 0262526441
Language English, Spanish, and French
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Book Summary:

An overview of the physics, concepts, theories, and models underlying the discipline of aerodynamics. This book offers a general overview of the physics, concepts, theories, and models underlying the discipline of aerodynamics. A particular focus is the technique of velocity field representation and modeling via source and vorticity fields and via their sheet, filament, or point-singularity idealizations. These models provide an intuitive feel for aerodynamic flow-field behavior and are the basis of aerodynamic force analysis, drag decomposition, flow interference estimation, and other important applications. The models are applied to both low speed and high speed flows. Viscous flows are also covered, with a focus on understanding boundary layer behavior and its influence on aerodynamic flows. The book covers some topics in depth while offering introductions and summaries of others. Computational methods are indispensable for the practicing aerodynamicist, and the book covers several computational methods in detail, with a focus on vortex lattice and panel methods. The goal is to improve understanding of the physical models that underlie such methods. The book also covers the aerodynamic models that describe the forces and moments on maneuvering aircraft, and provides a good introduction to the concepts and methods used in flight dynamics. It also offers an introduction to unsteady flows and to the subject of wind tunnel measurements. The book is based on the MIT graduate-level course “Flight Vehicle Aerodynamics” and has been developed for use not only in conventional classrooms but also in a massive open online course (or MOOC) offered on the pioneering MOOC platform edX. It will also serve as a valuable reference for professionals in the field. The text assumes that the reader is well versed in basic physics and vector calculus, has had some exposure to basic fluid dynamics and aerodynamics, and is somewhat familiar with aerodynamics and aeronautics terminology.

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