Quantitative analysis of drag reduction methods for blunt shaped automobiles

F Szodrai - Applied Sciences, 2020 - mdpi.com
In fluid mechanics, drag related problems aim to reduce fuel consumption. This paper is
intended to provide guidance for drag reduction applications on cars. The review covers …

Assessment of LES, IDDES and RANS approaches for prediction of wakes behind notchback road vehicles

K He, G Minelli, J Wang, G Gao, S Krajnović - Journal of Wind Engineering …, 2021 - Elsevier
Abstract The capability of Large Eddy Simulations (LES), Improved Delayed Detached Eddy
Simulations (IDDES) and Reynolds-Averaged Navier–Stokes Equations (RANS) to predict …

[HTML][HTML] CFD simulation of aerodynamic forces on the DrivAer car model: Impact of computational parameters

P Qin, A Ricci, B Blocken - Journal of Wind Engineering and Industrial …, 2024 - Elsevier
Automobile designers and engineers are constantly focusing on aerodynamic optimization
with the aim of reducing fuel consumption and particulate and gaseous emissions. In the last …

On state instability of the bi-stable flow past a notchback bluff body

K He, G Minelli, X Su, G Gao… - Journal of Fluid …, 2022 - cambridge.org
The wake of a notchback Ahmed body presenting a bi-stable nature is investigated by
performing wind tunnel experiments and large-eddy simulations. Attention is confined to the …

Flow over a realistic car model: Wall modeled large eddy simulations assessment and unsteady effects

DE Aljure, J Calafell, A Baez, A Oliva - Journal of Wind Engineering and …, 2018 - Elsevier
Numerical simulations are carried out on the flow over a realistic generic car geometry, the
DrivAer-fastback car model. Pure large eddy simulations (LES) and wall-modeled large …

[HTML][HTML] Assessment of hybrid RANS-LES methods for accurate automotive aerodynamic simulations

P Ekman, D Wieser, T Virdung, M Karlsson - Journal of Wind Engineering …, 2020 - Elsevier
Highlights•Three hybrid RANS-LES models are compared to wind tunnel measurements for
two DrivAer car body configurations.•The turbulence models RANS shielding and transition …

Comparison of microstructure refinement in wire-arc additively manufactured Ti–6Al–2Sn–4Zr–2Mo–0.1 Si and Ti–6Al–4V built with inter-pass deformation

AE Davis, AE Caballero, R Biswal, S Williams… - … Materials Transactions A, 2022 - Springer
Abstract The titanium alloy Ti–6Al–2Sn–4Zr–2Mo–0.1 Si (Ti6242) has been deposited for
the first time by a directed energy deposition process using a wire and arc system—ie, wire …

Effect of time-step size on flow around generic car models

M Aultman, Z Wang, L Duan - Journal of Wind Engineering and Industrial …, 2021 - Elsevier
The current paper analyzes the effect of time-step size on the predictive capability and
computational cost of two unsteady methods (Unsteady Reynolds-Averaged Navier–Stokes …

Drivaernet: A parametric car dataset for data-driven aerodynamic design and graph-based drag prediction

M Elrefaie, F Ahmed, A Dai - … and Information in …, 2024 - asmedigitalcollection.asme.org
This study introduces DrivAerNet, a large-scale high-fidelity CFD dataset of 3D industry-
standard car shapes, and RegDGCNN, a dynamic graph convolutional neural network …

Experimental and numerical investigation of the aerodynamic characteristics of high-performance vehicle configurations under yaw conditions

S Rijns, TR Teschner, K Blackburn, AR Proenca… - Physics of …, 2024 - pubs.aip.org
This study investigates the impact of yaw conditions on the aerodynamic performance and
flow field of three high-performance vehicle model configurations by means of wind tunnel …