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首页> 外文会议>Vehicle aerodynamics, 2012. >An Accurate, Extensive, and Rapid Method for Aerodynamics Optimization: The 50:50:50 Method
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An Accurate, Extensive, and Rapid Method for Aerodynamics Optimization: The 50:50:50 Method

机译：一种精确，广泛，快速的空气动力学优化方法：50：50：50方法

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摘要

Computational Fluid Dynamics (CFD) is widely used in vehicle aerodynamics development today, but typically used to study one vehicle shape at a time. In order to be used for aerodynamic shape exploration and optimization the CFD simulation process has to be able to study a large set of design alternatives (vehicle shape variants) within the short period of time typically available in the overall aerodynamics development process. This paper reports the development and testing of a process, referred to as the 50:50:50 Method, which is developed to study a large set of design alternatives in a highly automated way, while ensuring that each design alternative is simulated with a high fidelity CFD simulation. The process leverages morphing, advanced CFD solver numerics, high performance computing, and process automaters to simulate 50 shape variants of a vehicle, with high fidelity CFD simulations that use a computational mesh of 50 million cells for simulating each design point, in a total elapsed time of 50 hours after initial case setup. The development of this process and a test case with a realistic vehicle are reported.
机译：今天，计算流体动力学（CFD）已广泛用于车辆空气动力学开发，但通常一次用于研究一种车辆形状。为了用于空气动力学形状的探索和优化，CFD模拟过程必须能够在整个空气动力学开发过程中通常可用的短时间内研究大量设计备选方案（车辆形状变体）。本文报告了一种过程的开发和测试，该过程称为50:50:50方法，该方法旨在以高度自动化的方式研究大量设计方案，同时确保每个设计方案都具有较高的仿真度。保真度CFD模拟。该过程利用变形，先进的CFD求解器数值，高性能计算和过程自动器来模拟车辆的50种形状变体，而高保真CFD模拟则使用5000万个单元的计算网格来模拟每个设计点，总耗时为初始案例设置后50小时的时间。报告了该过程的发展以及使用实际车辆的测试案例。

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