Integrated numerical and experimental workflow for high-performance vehicle aerodynamics

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dc.contributor.authorRijns, Steven
dc.contributor.authorTeschner, Tom-Robin
dc.contributor.authorBlackburn, Kim
dc.contributor.authorBrighton, James
dc.date.accessioned2024-02-16T12:25:45Z
dc.date.available2024-02-16T12:25:45Z
dc.date.issued2024-02-06
dc.description.abstractThe high-performance and motorsport vehicle sectors are pushing the performance frontiers of aerodynamically efficient vehicles. Well-balanced use of accurate and consistent numerical simulation tools in combination with wind tunnel experiments is crucial for cost-effective aerodynamic research and development processes. Therefore, this study assesses the simulation performance of four Reynolds-averaged Navier–Stokes (RANS) turbulence models in relation to experimental and high-fidelity delayed detached eddy simulation (DDES) data for the aerodynamic assessment of a high-performance variant of the DrivAer model (DrivAer hp-F). The influences of predominant wind tunnel conditions on the vehicle’s aerodynamic force coefficients and flow field are also investigated. Additionally, a novel CFD-based blockage correction method is introduced and applied to evaluate the accuracy of conventional blockage correction methods. Among the RANS models, the k-ω SST model exhibited notable relative accuracy in the prediction of force coefficients and demonstrated generally the best correlation with detailed DDES flow field data. The wind tunnel blockage effect caused a 9% increase in downforce and 16% increase in drag, whereas the interference effects from the overhead measurement system reduced downforce by 4% and drag by 8%. The novel CFD-based blockage correction method confirmed that conventional blockage correction methods adequately estimate the dynamic pressure in proximity of a wind tunnel model (<3%), but do not consider local effects on downforce and drag individually. Overall, the research extends beyond prior work on automotive applications, contributing to the advancement of aerodynamic research methodologies suitable for the complex flow fields of high-performance vehicles.en_UK
dc.identifier.citationRijns S, Teschner TR, Blackburn K, Brighton J. (2024) Integrated numerical and experimental workflow for high-performance vehicle aerodynamics. SAE Technical Paper: 2024-01-5016, Available online February 2024en_UK
dc.identifier.eissn2688-3627
dc.identifier.issn0148-7191
dc.identifier.urihttps://doi.org/10.4271/2024-01-5016
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/20819
dc.language.isoenen_UK
dc.publisherSociety of Automotive Engineersen_UK
dc.rightsAttribution-NonCommercial 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/*
dc.subjectComputer simulationen_UK
dc.subjectWind tunnel testsen_UK
dc.subjectAerodynamicsen_UK
dc.subjectComputational fluid dynamics (CFD)en_UK
dc.subjectDragen_UK
dc.subjectMotorsportsen_UK
dc.subjectSimulation and modelingen_UK
dc.titleIntegrated numerical and experimental workflow for high-performance vehicle aerodynamicsen_UK
dc.typeTechnical Reporten_UK
dcterms.dateAccepted2024-01-02

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