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Author : Pramod Nari Krishnani
Publisher :
ISBN 13 :
Total Pages : 156 pages
Book Rating : 4.:/5 (67 download)
Download or read book CFD Study of Drag Reduction of a Generic Sport Utility Vehicle written by Pramod Nari Krishnani and published by . This book was released on 2009 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : J Katz
Publisher : Robert Bentley, Incorporated
ISBN 13 : 9780837601427
Total Pages : 280 pages
Book Rating : 4.6/5 (14 download)
Download or read book Race Car Aerodynamics written by J Katz and published by Robert Bentley, Incorporated. This book was released on 1996-03-08 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Author : Ahmed Ali Shakir Al-Saadi
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (118 download)
Download or read book Analysis of Novel Techniques of Drag Reduction and Stability Increase for Sport Utility Vehicles Using Computational Fluid Dynamics written by Ahmed Ali Shakir Al-Saadi and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Yuri Antonio Sevilla
Publisher :
ISBN 13 :
Total Pages : 126 pages
Book Rating : 4.:/5 (821 download)
Download or read book Drag Reduction of Sport Utility Vehicle Using Vortex Generators written by Yuri Antonio Sevilla and published by . This book was released on 2012 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: Road vehicles such as passenger cars, trucks and SUVs are categorized as bluff bodies. As a vehicle moves forward, the motion of the air around it produces pressure gradients, which vary across the entire body surface. This in turn helps to develop a turbulent wake region behind it, which works against the vehicle's forward motion. As a result, the engine has to work harder, thus increasing fuel consumption. The purpose of this thesis is to present development, design and optimization of drag reducing devices for SUVs by examining the SUVs aerodymanic properties. Simulations using commercial software such as Solidworks, Ansys Workbench, Design Modeler, Mesh Editor and Fluent were performed to study the aerodynamic behavior behind the SUV. The Ahmed Reference Model (ARM) was selected as a benchmark test. Computational fluid dynamics (CFD) simulations for three SUV models were performed and their performance was analyzed to determine which design yields the best drag reduction results. The three CFD models consist of one basic SUV model without any drag reducing devices. The second one uses a bump-shaped vortex generator (VG) design and the third one uses a delta wing VG design. Out of the two VG designs, it was determined that the bump-shaped design yielded the best drag reduction results for the SUV model. The next step was to experiment with the VG height to determine the optimum height for the SUV model. Results demonstrate that a bump-shaped VG with a height of 25 mm yields the lowest CD.
Author : Stéphie Edwige
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (11 download)
Download or read book Modal Analysis and Flow Control for Drag Reduction on a Sport Utility Vehicle written by Stéphie Edwige and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The automotive industry dedicates a lot of effort to improve the aerodynamical performances of road vehicles in order to reduce its carbon footprint. In this context, the target of the present work is to analyze the origin of aerodynamic losses on a reduced scale generic Sport Utility Vehicle and to achieve a drag reduction using an active flow control strategy. After an experimental characterization of the flow past the POSUV, a cross-modal DMD analysis is used to identify the correlated periodical features responsible for the tailgate pressure loss. Thanks to a genetic algorithm procedure, 20% gain on the tailgate pressure is obtained with optimal pulsed blowing jets on the rear bumper. The same cross-modal methodology allows to improve our understanding of the actuation mechanism. After a preliminary study of the 25° inclined ramp and of the Ahmed Body computations, the numerical simulation of the POSUV is corroborated with experiments using the cross-modal method. Deeper investigations on the three-dimensional flow characteristics explain more accurately the wake flow behavior. Finally, the controlled flow simulations propose additional insights on the actuation mechanisms allowing to reduce the aerodynamic losses.
Author : Tadeusz Uhl
Publisher : Springer
ISBN 13 : 3030201317
Total Pages : 4248 pages
Book Rating : 4.0/5 (32 download)
Download or read book Advances in Mechanism and Machine Science written by Tadeusz Uhl and published by Springer. This book was released on 2019-06-13 with total page 4248 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gathers the proceedings of the 15th IFToMM World Congress, which was held in Krakow, Poland, from June 30 to July 4, 2019. Having been organized every four years since 1965, the Congress represents the world’s largest scientific event on mechanism and machine science (MMS). The contributions cover an extremely diverse range of topics, including biomechanical engineering, computational kinematics, design methodologies, dynamics of machinery, multibody dynamics, gearing and transmissions, history of MMS, linkage and mechanical controls, robotics and mechatronics, micro-mechanisms, reliability of machines and mechanisms, rotor dynamics, standardization of terminology, sustainable energy systems, transportation machinery, tribology and vibration. Selected by means of a rigorous international peer-review process, they highlight numerous exciting advances and ideas that will spur novel research directions and foster new multidisciplinary collaborations.
Author : Rose McCallen
Publisher : Springer Science & Business Media
ISBN 13 : 9783540220886
Total Pages : 590 pages
Book Rating : 4.2/5 (28 download)
Download or read book The Aerodynamics of Heavy Vehicles: Trucks, Buses, and Trains written by Rose McCallen and published by Springer Science & Business Media. This book was released on 2004-09 with total page 590 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book includes the carefully edited contributions to the United Engineering Foundation Conference: The Aerodynamics of Heavy Vehicles: Trucks, Buses and Trains held in Monterey, California from December 2-6, 2002. This conference brought together 90 leading engineering researchers discussing the aerodynamic drag of heavy vehicles. The book topics include a comparison of computational fluid dynamics calculations using both steady and unsteady Reynolds-averaged Navier-Stokes, large-eddy simulation, and hybrid turbulence models and experimental data obtained from wind tunnel experiments. Advanced experimental techniques including three-dimensional particle image velocimetry are presented as well, along with their use in evaluating drag reduction devices.
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 : Chanon Jiratiticharoen
Publisher :
ISBN 13 :
Total Pages : 224 pages
Book Rating : 4.:/5 (1 download)
Download or read book CFD Study of Drag Reduction on a Sedan Car written by Chanon Jiratiticharoen and published by . This book was released on 2016 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Henry R. Boyer
Publisher :
ISBN 13 :
Total Pages : 115 pages
Book Rating : 4.:/5 (959 download)
Download or read book Experiments and Computer Simulations on Aerodynamic Drag Reduction of Light Vehicle-trailer Systems written by Henry R. Boyer and published by . This book was released on 2015 with total page 115 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wind-tunnel experiments and Computational Fluid Dynamics (CFD) were performed to study the effect a deflector had on the flow and drag force associated with a 2010 F-150 truck and cargo trailer (Light Vehicle-Trailer System - LVTS). Image Correlation Velocimetry (ICV) on smokewire streaklines measured the velocity field on the model mid-plane. CFD was used to elucidate the flow, calculate the drag force, and study the effects of a moving ground-plane and blockage. The drag was reduced by approximately 13% at a Re of 14,900 with a moving ground-plane, and 17% without. Experiments suggested that the large difference in Re between wind-tunnel and the full-scale 5 million is not expected to significantly diminish the full-scale relevance of the drag results. One low Re effect was the presence of a separation bubble on the hood of the tow vehicle whose size reduced with an increase in Re. Three other characteristic flow patterns were identified: separation off the lead vehicle cab, stagnation of the free-stream on the trailer face for the no-deflector case, and subsequent separation at the trailer front corner. Comparisons of the ICV and CFD results with no deflector indicated good agreement, particularly in the direction of the velocity vectors. The ICV method under-evaluated the speed of the flow by up to 15%. The smoke streaklines and CFD streamlines agreed well for the no deflector case. However, for the deflector case, the CFD found an entirely different topological solution absent in the experiment. A pair of vertically-oriented vortices were found, wrapped around the front of the trailer on the mid-plane.
Author : Chee Hong Lim
Publisher :
ISBN 13 :
Total Pages : 116 pages
Book Rating : 4.:/5 (12 download)
Download or read book Drag Reduction Studies and CFD Analysis on Passenger Car Model written by Chee Hong Lim and published by . This book was released on 2006 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Mohammad Abbaspour
Publisher :
ISBN 13 : 9783659278204
Total Pages : 0 pages
Book Rating : 4.2/5 (782 download)
Download or read book Drag Reduction of a Generic Car Model by Active Boundary Layer Control written by Mohammad Abbaspour and published by . This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jeffrey Young
Publisher :
ISBN 13 :
Total Pages : 76 pages
Book Rating : 4.:/5 (856 download)
Download or read book Drag Reduction Through the Use of Dimpled Patches on the UNH Supermileage Car written by Jeffrey Young and published by . This book was released on 2013 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Niraj Kumar
Publisher : Springer Nature
ISBN 13 : 9811599564
Total Pages : 838 pages
Book Rating : 4.8/5 (115 download)
Download or read book Advances in Interdisciplinary Engineering written by Niraj Kumar and published by Springer Nature. This book was released on 2021-04-12 with total page 838 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book comprises the select proceedings of the International Conference on Future Learning Aspects of Mechanical Engineering (FLAME) 2020. This volume focuses on several emerging interdisciplinary areas involving mechanical engineering. Some of the topics covered include automobile engineering, mechatronics, applied mechanics, structural mechanics, hydraulic mechanics, human vibration, biomechanics, biomedical Instrumentation, ergonomics, biodynamic modeling, nuclear engineering, and agriculture engineering. The contents of this book will be useful for students, researchers as well as professionals interested in interdisciplinary topics of mechanical engineering.
Author : Chenyi Zhang
Publisher : Springer Nature
ISBN 13 : 3658334398
Total Pages : 115 pages
Book Rating : 4.6/5 (583 download)
Download or read book Aerodynamic Study on the Vehicle Shape Parameters with Respect to Ground Simulation written by Chenyi Zhang and published by Springer Nature. This book was released on 2021-02-24 with total page 115 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Design of Tractor-trailer Add-on Drag Reduction Devices Using CFD. written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Drag reduction is one way to reduce vehicle fuel consumption. Tractor-trailers have a higher drag coefficient than other vehicles due to their bluff-body shape. Over the years, numerous add-on devices have been invented to help reducing drag and fuel consumption. The current research goal is to design new add-on devices to further reduce drag of a tractor-trailer. A 3D simplified (Ahmed) model was built as the baseline model. Computational fluid dynamics (CFD) in the form of unsteady Reynolds-averaged Navier-Stokes (RANS) and DES simulations were used to determine viable design strategies. The predicted drag coefficient of the baseline model showed good agreement with experimental data. Grid sensitivity of baseline model was also studied prior to new designs. A hump and a modified curved base flap were created as the new designs which were both optimized for best drag reduction effect. The results from the optimized design were shown to have 50.9% drag reduction compared to the baseline model. This demonstrates the possibility of fuel saving while applying these devices on a real truck. With the optimized design, three different turbulent models were tested to compare with each other - [kappa]-epsilon, RANS (standard and RNG), and DES models. The results showed that DES model can predict more flow unsteadiness than RANS models. However, the standard [kappa]-epsilon model still predicted the most accurate drag coefficient among the three models.
Author : Basant Singh Sikarwar
Publisher : Springer Nature
ISBN 13 : 9811601593
Total Pages : 891 pages
Book Rating : 4.8/5 (116 download)
Download or read book Advances in Fluid and Thermal Engineering written by Basant Singh Sikarwar and published by Springer Nature. This book was released on 2021-04-21 with total page 891 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book comprises the select proceedings of the International Conference on Future Learning Aspects of Mechanical Engineering (FLAME 2020). This volume focuses on current research in fluid and thermal engineering and covers topics such as heat transfer enhancement and heat transfer equipment, heat transfer in nuclear applications, microscale and nanoscale transport, multiphase transport and phase change, multi-mode heat transfer, numerical methods in fluid mechanics and heat transfer, refrigeration and air conditioning, thermodynamics, space heat transfer, transport phenomena in porous media, turbulent transport, theoretical and experimental fluid dynamics, flow measurement techniques and instrumentation, computational fluid dynamics, fluid machinery, turbo machinery and fluid power. Given the scope of its contents, this book will be interesting for students, researchers as well as industry professionals.
