Search tips
 This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Development of an Unsteady Aerodynamic Simulator Using Large-Eddy Simulation Based on High-Performance Computing Technique

Journal Article
2009-01-0007
ISSN: 1946-3995, e-ISSN: 1946-4002
DOI: https://doi.org/10.4271/2009-01-0007
Published April 20, 2009 by SAE International in United States
Development of an Unsteady Aerodynamic Simulator Using Large-Eddy Simulation Based on High-Performance Computing Technique
Sector:
Citation: Tsubokura, M., Nakashima, T., Kitoh, K., Sasaki, Y. et al., "Development of an Unsteady Aerodynamic Simulator Using Large-Eddy Simulation Based on High-Performance Computing Technique," SAE Int. J. Passeng. Cars – Mech. Syst. 2(1):168-178, 2009, https://doi.org/10.4271/2009-01-0007.
Language: English

Abstract:

A numerical method specially designed to predict unsteady aerodynamics of road vehicle was developed based on unstructured Large-Eddy Simulation (LES) technique. The code was intensively optimized for the Earth Simulator in Japan to deal with the excessive computational resources required for LES, and could treat numerical meshes of up to around 120 million elements. Moving boundary methods such as the Arbitrary Lagrangian-Eulerian (ALE) or the sliding method were implemented to handle dynamic motion of a vehicle body during aerodynamic assessment. The method can also model a gusty crosswind condition. The method was applied to three cases in which unsteady aerodynamics are expected to be crucial.

Recommended Content

Technical Paper Exploration and Improvement of Road Vehicle Aerodynamics using LES
Technical Paper Steer Dynamics in Road Simulation
Journal Article Road Characterization for the Simulation of Automotive Vehicle Dynamics