Relevant bibliographies by topics / Aerodynamics of road vehicles

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Aerodynamics of road vehicles'

Author: Grafiati
Published: 4 June 2021
Last updated: 14 March 2023

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Journal articles on the topic "Aerodynamics of road vehicles"

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Duncan, Bradley, Luca D’Alessio, Joaquin Gargoloff, and Ales Alajbegovic. "Vehicle aerodynamics impact of on-road turbulence." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 231, no. 9 (April 10, 2017): 1148–59. http://dx.doi.org/10.1177/0954407017699710.

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The ultimate target for vehicle aerodynamicists is to develop vehicles that perform well on the road in real-world conditions. On the other hand, vehicle development today is performed mostly in controlled settings, using wind tunnels and computational fluid dynamics with artificially uniform freestream conditions and neglecting real-world effects due to road turbulence from the wind and other vehicles. Turbulence on the road creates a non-uniform and fluctuating flow field in which the length scales of the fluctuations fully encompass the length scales of the relevant aerodynamic flow structures around the vehicle. These fluctuations can be comparable in size and strength with the vehicle’s own wake oscillations. As a result, this flow environment can have a significant impact on the aerodynamic forces and on the sensitivity of these forces to various shape changes. Some aerodynamic devices and integral design features can perform quite differently from the way in which they do under uniform freestream conditions. In this paper, unsteady aerodynamics simulations are performed using the lattice Boltzmann method on a detailed representative automobile model with several design variants, in order to explore the effect of on-road turbulence on the aerodynamics and the various mechanisms that contribute to these effects.
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Hucho, W., and G. Sovran. "Aerodynamics of Road Vehicles." Annual Review of Fluid Mechanics 25, no. 1 (January 1993): 485–537. http://dx.doi.org/10.1146/annurev.fl.25.010193.002413.

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Zhang, Zhe, Ying Chao Zhang, and Jie Li. "Vehicles Aerodynamics while Crossing each other on Road Based on Computational Fluid Dynamics." Applied Mechanics and Materials 29-32 (August 2010): 1344–49. http://dx.doi.org/10.4028/www.scientific.net/amm.29-32.1344.

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When vehicles run on road, they will be overtaken, cross by other vehicles or be impacted by crosswind. The other events of overtaking and in crosswind were investigated more deeply. A few of paper report the state of the research on this problem. Until now there are no any wind tunnel and road tests to study on road vehicle aerodynamics while crossing each other. Some numerical simulations were carried out by adopting technology of sliding interface and moving mesh. The method of numerical simulations was narrated in detail. The transient process of vehicles crossing each other was realized. Then the trends of aerodynamic coefficients changing were obtained from the flow field of simulation results. The quantificational changing of vehicles aerodynamic coefficients was obtained when they cross each other. The vehicles are sedan and coach. The simulation results indicated that the all aerodynamic coefficients of two vehicles changed large. The aerodynamic force was important to the vehicles’ handling stability when they cross each other.
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Jadhav, Rohit. "Computational Fluid Dynamics (CFD) Analysis of 3D Car Model to Understanding Key Aerodynamic Issues and Their Interaction with Other Motorsport & Automotive Vehicle System." International Journal for Research in Applied Science and Engineering Technology 9, no. 12 (December 31, 2021): 2100–2114. http://dx.doi.org/10.22214/ijraset.2021.39685.

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Abstract: Growing population of vehicles is one the biggest global concern and it led to traffic problems and creates congestion. People are not getting place to park their vehicles. Travel by car for shorter distance also stressful and time consuming because they have to face road traffic and usually cars are big at size so, to travel by car on road need more spacious and traffic free roads. that’s why some manufacturers start designing & manufacturing One seater vehicle which can easily transportable and create less congestion. If a single person wants to ride somewhere then he doesn’t have to take large car for one person, He can use single seater vehicle. In this assignment I have Designed and Tested a single seater electric vehicle which can easily transportable, compact and personal commuter vehicle (PMV). Keywords: CFD analysis, Aerodynamics analysis, automotive vehicle system, 3D modelling, pressure plot, performance optimization, vehicle aerodynamics.
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Ahmed, S. R., R. G. Gawthorpe, and P. A. Mackrodt. "Aerodynamics of Road- and Rail Vehicles." Vehicle System Dynamics 14, no. 4-6 (June 1985): 319–92. http://dx.doi.org/10.1080/00423118508968836.

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Bukowski, A., P. Twigg, G. Walker, and S. Sigurnjak. "Shaping the Future of Road Haulage Trailer Design." Measurement and Control 44, no. 10 (December 2011): 315–18. http://dx.doi.org/10.1177/002029401104401004.

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Aerodynamics is a subject that serves a wide range of industries and contains many different specialist areas in which to find expertise. Primarily concerned with the analysis of fluid flow, there are numerous applications: Aerospace and automobile manufacturers are the typical associations with aerodynamics, but there is increasing interest in the subject from industries and manufacturers that now have an incentive to pursue aerodynamic designs in the interest of fuel-efficiency. Freight and Commercial vehicles are one such industry. The Cartwright Group are a trailer bodybuilder manufacturing company based in Manchester; with ever increasing fuel-prices, they witnessed an increasing requirement for trailer designs that are more aerodynamically efficient in order to reduce the high fuel consumption faced by the end-user of heavy goods vehicle (HGV) trailers. An approach to aerodynamic design that produces quantifiable results is required, while also being accessible to laymen and presentable to potential end-users before any order to purchase decisions are made. This paper discusses an approach taken that combines traditional aerodynamic development, with visualisation and experimental simulation methods to meet these requirements.
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Korolev, E. V., R. R. ZHamalov, and V. V. Bernackij. "Age of aerodynamics of automobiles." Izvestiya MGTU MAMI 12, no. 3 (September 15, 2018): 40–50. http://dx.doi.org/10.17816/2074-0530-66833.

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The article analyzes the time variation of the values of the coefficient Cx and the aerodynamic factor for passenger vehicles of leading companies. Calculated equations of aerodynamic indexes are presented, both for the whole array of automobiles and for breaking them into classes according to the European classification. The analysis uses aerodynamic indicators of the main types of bodies of vehicles obtained both during road tests and in experiments in wind tunnels with full-scale objects. Examples are given of the discrepancy between aerodynamic indicators and the results of the correlation studies of automobiles produced under different conditions, in different wind tunnels and its comparison with road tests. The reasons for these discrepancies are indicated. Examples are given of the change in aerodynamic indicators from the time of the release of generations of some brands of automobiles. The best and worst vehicles in aerodynamics for all six classes of European classification are indicated. The novelty is the determination of the regularity of the change in aerodynamic parameters, in particular of the aerodynamic factor, for the whole period of development of motorization, which requires the use of a large data set. The results of the analysis are also given. The result of the analysis is the conclusion that the amount of the aerodynamic factor of passenger vehicles is decreasing for the whole time of automobilization with a change in the external form of the body.
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Li, Shuya, Zhengqi Gu, Taiming Huang, Zhen Chen, and Jun Liu. "Coupled analysis of vehicle stability in crosswind on low adhesion road." International Journal of Numerical Methods for Heat & Fluid Flow 28, no. 8 (August 6, 2018): 1956–72. http://dx.doi.org/10.1108/hff-01-2018-0013.

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Purpose The purpose of this paper is to develop a two-way coupling approach for investigating the aerodynamic stability of vehicles under the combined effect of crosswind and road adhesion. Design/methodology/approach The author develops a new two-way coupling approach, which couples large eddy simulation with multi-body dynamics (MBD), to investigate the crosswind stability on three different adhesion roads: ideal road, dry road and wet road. The comparison of the results obtained using the traditional one-way coupling approach and the new two-way coupling approach is also done to assess the necessity to use the proposed coupling technique on low adhesion roads, and the combined effect of crosswind and road adhesion on vehicle stability is analyzed. Findings The results suggest that the lower the road adhesion is, the larger deviation a vehicle generates, the more necessary to conduct the two-way coupling simulation. The combined effect of the crosswind and road adhesion can decrease a vehicle’s lateral motion on a high adhesion road after the disappearing of the crosswind. But on a low adhesion road, the vehicle tends to be unstable for its large head wind angle. The vehicle stability in crosswind on a low adhesion road needs more attention, and the investigation should consider the coupling of aerodynamics and vehicle dynamics and the combined effect of crosswind and road adhesion. Originality/value Developing a new two-way coupling approach which can capture the complex vehicle structures and the road adhesion with MBD model and the completed fluid filed structure with CFD model. The present study might be the first study considering the coupling of crosswind and low adhesion road. The proposed two-way coupling approach will be useful for researchers who study vehicle crosswind stability.
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Fabrizi, Carlo. "Computational Aeroacoustic Analysis of a Rolling Tire." Tire Science and Technology 44, no. 4 (October 1, 2016): 262–79. http://dx.doi.org/10.2346/tire.16.440403.

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ABSTRACT Road traffic is one of the major sources of noise in modern society. Consequently, the development of new vehicles is subject to increasingly stringent guidelines in terms of noise emissions. The main noise sources of common road vehicles are the engine, the transmission, the aerodynamics, and the tire-road interaction. The latter becomes dominant between 50 and 100 km/h, speeds typical of urban and extra-urban roads. The noise that arises from the tire-road interaction is the combination of structural vibration and aeroacoustics phenomena that create and amplify or reduce the sound emitted from the tire. The aim of the numerical analysis presented in this study is to investigate the aeroacoustic noise-generation mechanisms of the tire and at the same time provide a tool to develop a low-noise tire. The work is divided into two parts: analysis of the steady aerodynamics and the unsteady aeroacoustic analysis. In the first part, the numerical solution of the Navier-Stokes equation allows us to screen aerodynamic phenomena, such as separations or jet streams that can produce noise. In the second part, these aspects are analyzed in greater detail by means of aeroacoustic analogies, confirming the capability of the numerical tool to provide suggestions for the development of quieter tires.
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Zhang, Zhe, Ying Chao Zhang, Jie Li, and Jia Wang. "Numerical Simulation on Aerodynamic Characteristics of Heavy-Duty Commercial Vehicle." Advanced Materials Research 346 (September 2011): 477–82. http://dx.doi.org/10.4028/www.scientific.net/amr.346.477.

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With the development of automotive technology and high-speed highway construction, the speed of the vehicles increase which cause the significant increase in the aerodynamic drag when road vehicles are moving. Thereby the power of the vehicles, fuel economy, operational stability and other properties are affected very seriously. Heavy-duty commercial vehicles as the most efficient way to transport goods on the highway are widely used, and the speed of the vehicles increases faster. Especially the demands for heavy-duty commercial vehicles are increasing in recent years. Reducing the aerodynamic drag by the analysis of external aerodynamic characteristics, improving the fuel economy and reducing energy consumption have become new research topics of heavy-duty commercial vehicles. To make the heavy-duty commercial vehicles meet the national standards of energy saving, a simplified heavy-duty commercial truck model was built in this paper. The numerical simulation of the vehicle was completed based on the theory of the aerodynamics. The aerodynamic characteristics were analyzed, according to the graphs of the pressure distribution, velocity distribution and flow visualization. To improve the aerodynamic characteristics of heavy-duty commercial vehicles, the main drag reduction measures are reducing the vortex of the cab and the container, the end of the container and the bottom of the container.
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Dissertations / Theses on the topic "Aerodynamics of road vehicles"

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Peters, Brett. "On Accelerating Road Vehicle Aerodynamics." Thesis, The University of North Carolina at Charlotte, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10791882.

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Road vehicle aerodynamics are primarily focused on developing and modeling performance at steady-state conditions, although this does not fully encompass the entire operating envelope. Considerable vehicle acceleration and deceleration occurs during operation, either because of driver input or from transient weather phenomenon such as wind gusting. With this considered, high performance road vehicles experience body acceleration rates well beyond ±1G to navigate courses during efficient transition in and out of corners, accelerating from maximum straight-line speed to manageable cornering speeds, and then back to maximum straight-line speed. This dissertation aims to answer if longitudinal acceleration is important for road vehicle aerodynamics with the use of transient Computational Fluid Dynamics (CFD) to develop a method for obtaining ensemble averages of forces and flow field variables. This method was developed on a simplified bluff body, a channel mounted square cylinder, achieving acceleration through periodic forcing of far field velocity conditions. Then, the method was applied to an open-source road vehicle geometry, the DrivAer model, and a high performance model which was created for this dissertation, the DrivAer-GrandTouringRacing (GTR) variant, as a test model that generates considerable downforce with low ground proximity. Each test body experienced drag force variations greater than ±10% at the tested velocities and acceleration rates with considerable variations to flow field distributions. Finally, an empirical formulation was used to obtain non-dimensional coefficients for each body from their simulated force data, allowing for force comparison between geometries and modeling of aerodynamic force response to accelerating vehicle conditions.

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Shah, Nawazish A. "Boundary element methods for road vehicle aerodynamics." Thesis, Loughborough University, 1985. https://dspace.lboro.ac.uk/2134/26942.

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The technique of the boundary element method consists of subdividing the boundary of the field of a function into a series of discrete elements, over which the function can vary. This technique offers important advantages over domain type solutions such as finite elements and finite differences. One of the most important features of the method is the much smaller system of equations and the considerable reduction in data required to run a program. Furthermore, the method is well-suited to problems with an infinite domain. Boundary element methods can be formulated using two different approaches called the ‘direct' and the ‘indirect' methods.
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Robinson, Christopher M. E. "Advanced CFD modelling of road-vehicle aerodynamics." Thesis, University of Manchester, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.488031.

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Forbes, David C. "Coupling road vehicle aerodynamics and dynamics in simulation." Thesis, Loughborough University, 2017. https://dspace.lboro.ac.uk/2134/25565.

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A fully coupled system in which a vehicle s aerodynamic and handling responses can be simulated has been designed and evaluated using a severe crosswind test. Simulations of this type provide vehicle manufacturers with a useful alternative to on road tests, which are usually performed at a late stage in the development process with a proto- type vehicle. The proposed simulations could be performed much earlier and help to identify and resolve any aerodynamic sensitivities and safety concerns before significant resources are place in the design. It was shown that for the simulation of an artificial, on-track crosswind event, the use of the fully coupled system was unnecessary. A simplified, one-way coupled system, in which there is no feedback from the vehicle s dynamics to the aerodynamic simulation was sufficient in order to capture the vehicle s path deviation. The realistic properties of the vehicle and accurately calibrated driver model prevented any large attitude changes whilst immersed in the gust, from which variations to the aerodynamics could arise. It was suggested that this system may be more suited to other vehicle geometries more sensitive to yaw motions or applications where a high positional accuracy of the vehicle is required.
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Littlewood, Rob. "Novel methods of drag reduction for squareback road vehicles." Thesis, Loughborough University, 2013. https://dspace.lboro.ac.uk/2134/12534.

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Road vehicles are still largely a consumer product and as such the styling of a vehicle becomes a significant factor in how commercially successful a vehicle will become. The influence of styling combined with the numerous other factors to consider in a vehicle development programme means that the optimum aerodynamic package is not possible in real world applications. Aerodynamicists are continually looking for more discrete and innovative ways to reduce the drag of a vehicle. The current thesis adds to this work by investigating the influence of active flow control devices on the aerodynamic drag of square back style road vehicles. A number of different types of flow control are reviewed and the performance of synthetic jets and pulsed jets are investigated on a simple 2D cylinder flow case experimentally. A simplified ¼ scale vehicle model is equipped with active flow control actuators and their effects on the body drag investigated. The influence of the global wake size and the smaller scale in-wake structures on vehicle drag is investigated and discussed. Modification of a large vortex structure in the lower half of the wake is found to be a dominant mechanism by which model base pressure can be influenced. The total gains in power available are calculated and the potential for incorporating active flow control devices in current road vehicles is reviewed. Due to practicality limitations the active flow control devices are currently ruled out for implementation on a road vehicle. The knowledge gained about the vehicle model wake flow topology is later used to create drag reductions using a simple and discrete passive device. The passive modifications act to support claims made about the influence of in wake structures on the global base pressures and vehicle drag. The devices are also tested at full scale where modifications to the vehicle body forces were also observed.
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Mullarkey, Seamus Paul. "Aerodynamic stability of road vehicles in side winds and gusts." Thesis, Imperial College London, 1990. http://hdl.handle.net/10044/1/8683.

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Gumusluol, Unsal. "Experimental Investigation Of Aerodynamic Interactions Of Vehicles In Close Folowing And Passing Situations." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/2/12607287/index.pdf.

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In this Thesis study, aerodynamic interactions of vehicle models in close following and passing situations were investigated expeimentally. Effect of the inter-vehicle spacing and lateral distance on drag coefficients of two close-following vehicles were observed. Two different types of vehicle models were used in order to investigate the shape effect on aerodynamic vehicle interactions. Drag froces and surface pressures of the models at each situation were measured. Two different blockage correction methods on the basis of drag coefficient results were applied. Linear increments of drag coefficients were observed on leading and trailing MIRA models. Beacuse of their blunter shapes and sharp edges, the leading and trailing Ahmed Body models feel the presence of aerodynamic interactions substantially. The most important reduction in drag force occurs at the least vehicle spacing for both vehicle types. In the passing situations, it was observed that drag coefficients of MIRA models did not change considerably. However, big amount of changes were observed at all positions for Ahmed Body. Maximum values of drag coefficients were reached when the models were at side by side position for both vehicle types. In conclusion, it is possible to obtain more drag reductions with more numbers of vehicles in close-following. the lower drag coefficients in close-following operations caues to increase fuel savings and to reduce air pollution.
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Pearson, William E. "The aerodynamic flow over a bluff body in ground proximity : CFD prediction of road vehicle aerodynamics using unstructured grids." Thesis, Loughborough University, 2000. https://dspace.lboro.ac.uk/2134/16054.

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The prediction of external automobile aerodynamics using Computational Fluid Dynamics (CFD) is still in its infancy. The restrictions on grid size for practical use limit the ability of most organisations to predict the full flow over an automobile. Some insight into the flow over a passenger car can be made by examining the flow over a bluff body in close proximity to the ground. One such body is the Ahmed body composed of a rounded front, straight mid-section and variable slant-rear section. This body exhibits many of the 3D flow structures exhibited by passenger cars. The main feature of the flow around this body is the change in flow structure as the angle of the slant surface at the rear of the body is increased. The flow starts fully attached and ends fully separated. In between these two regimes is a third high drag regime. The flow structure is characterised by strong counter-rotating longitudinal vortices originating from the interaction between the flow from the sides and top of the body, and a small separation from the top/slant edge on the centre-plane of the body. The flow reattaches to the slant surface and the low-pressure fluid within the separation bubble increases the drag considerably. The use of CFD incorporating tine averaged statistical turbulence models to reproduce these flow patterns is assessed in this study. Initial work concentrated on evaluating structured grid methods for this flow type. Some success was achieved with the flow fields for the attached and fully separated cases but the third high drag regime was not predicted. The flow field also exhibited a grid dependent flow structure and drag result. To examine these effects further without high grid overheads an unstructured mesh generator was developed and used to provide meshes with more grid cells clustered around the body and it's wake. Analysis and refinement of the unstructured grids proved successful at removing the grid dependent flow field but still showed no evidence of the third high drag flow regime. Further, the bulk levels of drag in all cases was too high and the fully separated flow regime occurred too late in the slant surface angle sweep, coming at 40° instead of the 30° seen in the wind tunnel results. Further analysis of the flow field using highly refined mixed meshes showed no improvement in the drag or flow field prediction with the high drag flow field still not present. The use of higher order differencing schemes and anisotropic turbulence models reduced the drag levels considerably but not to the levels seen in the wind tunnel results. Comparison of the results from this work with the work of other authors is difficult for two reasons. Firstly, work on the specific body used in this thesis is sparse and, secondly, much of the work done by other authors was in conjunction with automotive manufacturers and details of the specific numerical methods employed are not available. The most important parallel conclusion from the work presented here and that of other authors is the inability of the CFD prediction to capture the change in flow mode as the angle of slant surface is increased. This failure can, in all probability, be attributed to the use of a steady-state CFD solution algorithm to capture the flow field around the body. A small possibility perhaps still exists that further grid refinement, very localised around the body, would help, but the detailed and careful predictions presented in this study make this highly unlikely. The most important piece of further work that could follow this work would therefore be the application of a time-accurate (unsteady) CFD solution algorithm to the bluff body in ground proximity problem. Whether these predictions should be of an unsteady RANS nature, or full LES predictions would be best answered by applying these methods to the present flow problem which is fundamental to the study of automobile aerodynamics.
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Hamidy, Eghbal. "The structure of wakes of 3D bluff bodies in proximity to the ground." Thesis, Imperial College London, 1991. http://hdl.handle.net/10044/1/7603.

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Newnham, P. S. "The influence of turbulence on the aerodynamic optimisation of bluff body road vehicles." Thesis, Loughborough University, 2007. https://dspace.lboro.ac.uk/2134/14381.

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In order to promote further understanding of the effects of the atmospheric environment encountered by road vehicles in the real world, a wind tunnel based investigation was conducted into the effect of small scale turbulence on the road vehicle optimisation process. An initial investigation was carried out using a I-box model with variable leading edge radii from 10mm to 100mm. Measurements of time averaged forces were made over a range of Reynolds numbers from 200,000 to 1,300,000 (based on the square root of frontal area) and free stream turbulence levels from 0.2% to 5.1%. The transcritical Reynolds number based on edge radius was established as a basis for comparison between turbulence levels. Centreline pressures and PlV vector fields are presented to provide information on separation and reattachment. The investigation was extended to a more representative 2-box model using the same radii as before and a reference model at full scale, where the edge radii varied from 25mm to 150mm and turbulence intensity from 1.8% to 4.3%. It was shown that there is a strong reduction of separation under increased turbulence, and a small increase in skin friction. A further experiment was carried out to investigate the influence of freestream turbulence on the characteristic effect of changing backIight angle on lift and drag. It is shown that there was a reduction in drag due to the action of turbulence on the separation over the backIight, which may be driven by an effect on vortex strength. Tests were also carried out on two full scale vehicles to investigate the effect of increasing turbulence intensity on front and rear spoilers, cooling drag, and A-pillar vortex flows. The observed changes were small but would often be cumulative in their effect, so that optimising a vehicle in a significantly different turbulence level could produce a difference in the total forces acting on the vehicle. These experiments have shown that the primary effect of the additional freestream turbulence introduced by grids is on the boundary layer, as was expected from the literature. The results showed that increasing the turbulence intensity made separated regions smaller, and suggested that vortices become weaker and less well defined. The work provides a basis for continuing to investigate the effect of freestream turbulence on the process of optimising the aerodynamics of road vehicles.
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Books on the topic "Aerodynamics of road vehicles"

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Schuetz, Thomas Christian. Aerodynamics of Road Vehicles, Fifth Edition. Warrendale, PA: SAE International, 2015. http://dx.doi.org/10.4271/r-430.

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Wolf-Heinrich, Hucho, ed. Aerodynamics of road vehicles: From fluid mechanics to vehicle engineering. 4th ed. Warrendale, PA: Society of Automotive Engineers, 1998.

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Road vehicle aerodynamic design: An introduction. 3rd ed. St. Albans, Hertfordshire: MechAero Pub., 2009.

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Road vehicle aerodynamic design: An introduction. Harlow: Longman, 1996.

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Standardization, International Organization for. Road vehicles. 2nd ed. Geneva: ISO, 1987.

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1958-, Sumantran V., and Sovran Gino, eds. Vehicle aerodynamics. Warrendale, PA: Society of Automotive Engineers, 1996.

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North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Aerodynamics of Hypersonic Lifting Vehicles. S.l: s.n, 1987.

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Hankey, Wilbur L. Re-entry aerodynamics. Washington, DC: American Institute of Aeronautics and Astronautics, 1988.

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Engineers, Society of Automotive, and Society of Automotive Engineers. World Congress, eds. Vehicle aerodynamics. Warrendale, PA: Society of Automotive Engineers, 2000.

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Ian, Graham. Off-road vehicles. Oxford: Heinemann Library, 2008.

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Book chapters on the topic "Aerodynamics of road vehicles"

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Reynard, Adrian, Mike Camosy, Fritz Marinko, Henri Kowalczyk, and Tim Jennings. "In Depth Cd/Fuel Economy Study Comparing SAE Type II Results with Scale Model Rolling Road and Non-rolling Road Wind Tunnel Results." In The Aerodynamics of Heavy Vehicles III, 287–301. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-20122-1_18.

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van Raemdonck, G. M. R., and M. J. L. van Tooren. "Numerical and Wind Tunnel Analysis Together with Road Test of Aerodynamic Add-Ons for Trailers." In The Aerodynamics of Heavy Vehicles III, 237–52. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-20122-1_15.

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Schütz, Thomas, and Hannes Vollmer. "Some Aspects on On-Road Aerodynamics." In Progress in Vehicle Aerodynamics and Thermal Management, 189–98. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-67822-1_13.

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Gharib, Mory, Francisco Pereira, and Emilio Castaño Graff. "Applications of DDPIV to Studies Associated with Road Vehicles." In The Aerodynamics of Heavy Vehicles: Trucks, Buses, and Trains, 131–41. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-540-44419-0_15.

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Bearman, Peter. "Bluff Body Flow Research with Application to Road Vehicles." In The Aerodynamics of Heavy Vehicles II: Trucks, Buses, and Trains, 3–13. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-85070-0_1.

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Watkins, Simon, and Riccardo Pagliarella. "The Flow Environment of Road Vehicles in Winds and Traffic." In The Aerodynamics of Heavy Vehicles II: Trucks, Buses, and Trains, 101. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-85070-0_8.

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Iaccarino, G., B. de Maio, R. Verzicco, and B. Khalighi. "RANS Simulations of Passive and Active Drag Reduction Devices for a Road Vehicle." In The Aerodynamics of Heavy Vehicles: Trucks, Buses, and Trains, 267–75. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-540-44419-0_25.

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Sofu, Tanju, Fon-Chieh Chang, Ron Dupree, Srinivas Malipeddi, Sudhindra Uppuluri, and Steven Shapiro. "Measurement and Analysis of Underhood Ventilation Air Flow and Temperatures for an Off-Road Machine." In The Aerodynamics of Heavy Vehicles: Trucks, Buses, and Trains, 373–83. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-540-44419-0_34.

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Hellmold, Marius, Stephan Kopp, Andreas Liebing, and Stephan Schönherr. "Aerodynamic Development of a New Coach Generation Based on Wind Tunnel Testing, CFD-Simulation and On Road Tests." In Progress in Vehicle Aerodynamics and Thermal Management, 171–78. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-67822-1_11.

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Haff, Johannes, Sven Lange, Tarik Barth, and Henning Wilhelmi. "An Experimental Study of the Underbody Flow of a VW Golf VII Under On-Road and Wind-Tunnel Conditions." In Progress in Vehicle Aerodynamics and Thermal Management, 179–88. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-67822-1_12.

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Conference papers on the topic "Aerodynamics of road vehicles"

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Maazouddin, Amarddin Z., and Dongmei Zhou. "Drag Reduction on SUVs and Trucks by Wake Control." In ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-68730.

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Road vehicles such as SUVs or pickup trucks are described as bluff bodies. When the air flow passes over the road vehicles the flow will separate at the rear of the vehicle, forming a large low pressure turbulent wake region behind the vehicle. The formed pressure drag posts resistance on the road vehicles and thus increases the work done by the engine to propel the vehicle. The purpose of this paper is to present the development and design of drag reducing devices for SUVs by studying the SUV’s aerodynamics. Numerical simulations using commercial software package — FLUENT were performed in order to study the aerodynamics behind the vehicles. A computer model of the Ahmed Vehicle Model was selected as a benchmark test. This Ahmed Model is a simple geometric body that retains major flow features where most part of the drag is concentrated. Seven different spoiler designs for the SUV have been studied. Their results for the SUV’s aerodynamics have been presented through velocity vectors, pressure contours, and aerodynamic lift and drag plots. One spoiler design was found to be able to reduce aerodynamic drag and others were found to be able to reduce the lift.
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Heidemann Jr, R., A. F. A. Rodrigues, A. Bohrer, C. L. Gertz, and A. Cervieri. "Underbody aerodynamics: Drag coefficient reduction in road vehicles." In 2018 SAE Brasil Congress & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2018. http://dx.doi.org/10.4271/2018-36-0291.

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Okada, Yoshihiro, Takuji Nakashima, Makoto Tsubokura, Yousuke Morikawa, Ryousuke Kouno, Satoshi Okamoto, Tanaka Matsuhiro, and Takahide Nouzawa. "Aerodynamics Evaluation of Road Vehicles in Dynamic Maneuvering." In SAE 2016 World Congress and Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2016. http://dx.doi.org/10.4271/2016-01-1618.

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Ishioka, Hirotaka, Shoya Ota, Kosuke Nakasato, Keiji Onishi, and Makoto Tsubokura. "Coupled 6DoF Motion and Aerodynamics Simulation During Pass-By and Overtaken Motions." In ASME/JSME/KSME 2015 Joint Fluids Engineering Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/ajkfluids2015-17714.

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Recently, unsteady aerodynamics has been drawing many attention because it is becoming clear that unsteady aerodynamics have a big effect on running stability, safety and ride comfort of vehicles. In order to estimate unsteady aerodynamics, it is necessary to reproduce the actual running condition including an atmospheric disturbance and vehicle motion. However, it is difficult to investigate the effect of unsteady aerodynamics in the road test because it has a lot of errors in measurement. In this study, a coupled simulation method between the 6DoF motion of a vehicle and aerodynamics was developed for these problems. Large Eddy Simulation (LES) was used to estimate the aerodynamics, and the motion equations of a vehicle was used to estimate vehicle motion. Vehicle motion in aerodynamic simulation was reproduced by using Arbitrary Lagrangian-Eulerian (ALE) method. In addition, sliding mesh method was used to reproduce overtaking and passing motions of two vehicles. By using the methods, aerodynamics and vehicle dynamics simulations are treated interactively (2-way) by exchanging each result at each time step. The 2-way results were compared with the 1-way coupled simulation estimating vehicle motion from aerodynamics results posteriori to investigate how vehicle’s motion itself further affects its aerodynamics during the pass-by and overtaking motions. Our main focus is, by using this method, to study the effect of unsteady aerodynamics on the running stability of a vehicle. The results of 1-way and 2-way coupling analysis showed difference with respect to behavior of a vehicle. It is believed that such differences result in the different aerodynamic forces and moments, which is caused by the vehicle’s posture changes in the 2-way coupling simulation.
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Ramchandran, Gautham, Archana Nepak, and Yagnavalkya S. Mukkamala. "Re-designing door handles to reduce aerodynamic drag in road vehicles." In 32nd AIAA Applied Aerodynamics Conference. Reston, Virginia: American Institute of Aeronautics and Astronautics, 2014. http://dx.doi.org/10.2514/6.2014-2013.

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Bukovnik, Gernot, Wolfgang von der Linden, and Günter Brenn. "Impact of Rim Orientation on Road Vehicles Aerodynamics Simulations." In WCX SAE World Congress Experience. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2020. http://dx.doi.org/10.4271/2020-01-0674.

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Cassetari, Ailton. "Aerodynamics of Road Vehicles: Results Obtained by Numerical Simulation." In SAE Brasil '94. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1994. http://dx.doi.org/10.4271/942372.

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Ishioka, Hirotaka, Keiji Onishi, Kosuke Nakasato, Takuji Nakashima, and Makoto Tsubokura. "Coupled 6DoF motion and Aerodynamics Simulation of Road Vehicles in Crosswind gusts." In 33rd AIAA Applied Aerodynamics Conference. Reston, Virginia: American Institute of Aeronautics and Astronautics, 2015. http://dx.doi.org/10.2514/6.2015-3308.

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Christoffersen, Lasse, Roy Quartey-Papafio, Christoffer Landström, Lennart Löfdahl, and Anders Jönson. "Influence of Moving Ground Conditions on the Cooling Flows of Road Vehicles." In 26th AIAA Applied Aerodynamics Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2008. http://dx.doi.org/10.2514/6.2008-6737.

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Duncan, Bradley D., Axel Fischer, and Satheesh Kandasamy. "Validation of Lattice-Boltzmann Aerodynamics Simulation for Vehicle Lift Prediction." In ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting collocated with 8th International Conference on Nanochannels, Microchannels, and Minichannels. ASMEDC, 2010. http://dx.doi.org/10.1115/fedsm-icnmm2010-30891.

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Simulation tools are used in the design of vehicles to reduce the cost of development and to find robust engineering solutions earlier in the design process. Prediction of drag using aerodynamics simulation is critical for assessing aerodynamic efficiency of designs, including upper body shape, underbody surfaces, wheels and aerodynamic treatments such as spoilers, deflectors and underbody covers. The Lattice-Boltzmann Simulation approach has been used broadly to simulate both steady and unsteady flow regimes accurately and to provide robust prediction of drag. Beyond drag, other vehicle performance metrics are now predicted using this type of simulation such as, for example, wind noise levels, heat exchanger performance, brake cooling and thermal protection of sensitive components. In particular, aerodynamic lift is important for production vehicles for assessing handling attributes at high speed. In this paper, the validation of aerodynamics simulation for vehicle lift is examined and extended through a study of three detailed full-scale vehicles. For high-performance road vehicles the front- and rear-axle lift force, and the balance between them, are critical for driving dynamics for highway driving and must be considered along with the drag during development. Often a trade-off between lift and drag performance is required for a successful design. Furthermore, since the lift is highly dependent on the detailed pressure distribution in the underbody region and near the wheels, evaluation of lift should also account for on-road effects using rotating wheels and moving ground plane. In this study the drag, front lift and rear lift were evaluated using Lattice-Boltzmann Simulation and compared to full-scale wind-tunnel tests, using both static- and moving-ground configurations. Care was taken to include the effect of the floor boundary layer, suction system, moving belt and rotating tires, all of which are designed to emulate on-road conditions inside a wind-tunnel. The results show good prediction of both drag and lift performance, and provide confidence to extend the use of aerodynamic simulation for lift prediction earlier in the design process.
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Reports on the topic "Aerodynamics of road vehicles"

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Elhannouny, Essam M., and Douglas Longman. Off-Road Vehicles Research Workshop: Summary Report. Office of Scientific and Technical Information (OSTI), January 2019. http://dx.doi.org/10.2172/1493003.

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Rohatgi, Upendra, and Michael Furey. Drag and Noise Reduction for Road Vehicles. Office of Scientific and Technical Information (OSTI), June 2013. http://dx.doi.org/10.2172/1083749.

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Beiker, Sven. Next-generation Sensors for Automated Road Vehicles. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, February 2023. http://dx.doi.org/10.4271/epr2023003.

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<div class="section abstract"><div class="htmlview paragraph">This follow-up report to the inaugural SAE EDGE Research Report on “Unsettled Topics Concerning Sensors for Automated Road Vehicles” reviews the progress made in automated vehicle (AV) sensors over the past four to five years. Additionally, it addresses persistent disagreement and confusion regarding certain terms for describing sensors, the different strengths and shortcomings of particular sensors, and procedures regarding how to specify and evaluate them.</div><div class="htmlview paragraph"><b>Next-gen Automated Road Vehicle Sensors</b> summarizes current trends and debates (e.g., sensor fusion, embedded AI, simulation) as well as future directions and needs.</div><div class="htmlview paragraph"><a href="https://www.sae.org/publications/edge-research-reports" target="_blank">Click here to access the full SAE EDGE</a><sup>TM</sup><a href="https://www.sae.org/publications/edge-research-reports" target="_blank"> Research Report portfolio.</a></div></div>
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Ol, Michael V. Unsteady Low-Reynolds Number Aerodynamics for Micro Air Vehicles (MAVs). Fort Belvoir, VA: Defense Technical Information Center, August 2007. http://dx.doi.org/10.21236/ada472788.

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Van Horn, Albert. Mortality Curves for Road Wheels of Tracked Vehicles. Fort Belvoir, VA: Defense Technical Information Center, February 1987. http://dx.doi.org/10.21236/ada179766.

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Kurtz, Jennifer M., Samuel Sprik, Genevieve Saur, and Shaun Onorato. On-Road Fuel Cell Electric Vehicles Evaluation: Overview. Office of Scientific and Technical Information (OSTI), March 2019. http://dx.doi.org/10.2172/1501673.

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Diemand, Deborah, and James H. Lever. Cold Regions Issues for Off-Road Autonomous Vehicles. Fort Belvoir, VA: Defense Technical Information Center, April 2004. http://dx.doi.org/10.21236/ada422728.

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Beiker, Sven. Unsettled Topics Concerning Sensors for Automated Road Vehicles. SAE International, October 2019. http://dx.doi.org/10.4271/epr2018001.

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Ledna, Catherine, Matteo Muratori, Arthur Yip, Paige Jadun, and Chris Hoehne. Decarbonizing Medium- & Heavy-Duty On-Road Vehicles: Zero-Emission Vehicles Cost Analysis. Office of Scientific and Technical Information (OSTI), March 2022. http://dx.doi.org/10.2172/1854583.

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Affleck, Rosa T. Disturbance Measurements From Off-Road Vehicles on Seasonal Terrain. Fort Belvoir, VA: Defense Technical Information Center, July 2005. http://dx.doi.org/10.21236/ada464712.

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