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Industry-Relevant Implicit Large-Eddy Simulation of a High-Performance Road Car via Spectral/hp Element Methods
SIAM Review ( IF 10.8 ) Pub Date : 2021-11-04 , DOI: 10.1137/20m1345359
Gianmarco Mengaldo , David Moxey , Michael Turner , Rodrigo Costa Moura , Ayad Jassim , Mark Taylor , Joaquim Peiró , Spencer Sherwin

SIAM Review, Volume 63, Issue 4, Page 723-755, January 2021.
We present a successful deployment of high-fidelity large-eddy simulation (LES) technologies based on spectral/$hp$ element methods to industrial flow problems, which are characterized by high Reynolds numbers and complex geometries. In particular, we describe the numerical methods, software development, and steps that were required to perform the implicit LES of a real automotive car, namely, the Elemental Rp1 model. To the best of the authors' knowledge, this simulation represents the first high-order accurate transient LES of an entire real car geometry. Moreover, it constitutes a key milestone toward considerably expanding the computational design envelope currently allowed in industry, where steady-state modeling remains the standard. A number of novel developments had to be made in order to overcome obstacles in mesh generation and solver technology to achieve this simulation, which we detail in this paper. The main objective is to present to the industrial and applied mathematics community a viable pathway to translating academic developments into industrial tools that can substantially advance the analysis and design capabilities of high-end engineering stakeholders. The novel developments and results were achieved using the academic-driven open-source framework \nekpp.


中文翻译:

通过光谱/马力元素方法对高性能公路车进行行业相关的隐式大涡模拟

SIAM 评论,第 63 卷,第 4 期,第 723-755 页,2021 年 1 月。
我们展示了基于光谱/$hp$ 元素方法的高保真大涡模拟 (LES) 技术对工业流动问题的成功部署,其特点是高雷诺数和复杂的几何形状。特别是,我们描述了执行真正汽车的隐式 LES 所需的数值方法、软件开发和步骤,即 Elemental Rp1 模型。据作者所知,该模拟代表了整个真实汽车几何形状的第一个高阶精确瞬态 LES。此外,它构成了显着扩展目前工业中允许的计算设计范围的关键里程碑,其中稳态建模仍然是标准。为了克服网格生成和求解器技术中的障碍来实现这种模拟,必须进行许多新颖的开发,我们在本文中对此进行了详细介绍。主要目标是向工业和应用数学界提供一条可行的途径,将学术发展转化为工业工具,从而大大提高高端工程利益相关者的分析和设计能力。使用学术驱动的开源框架 \nekpp 实现了新颖的发展和成果。主要目标是向工业和应用数学界提供一条可行的途径,将学术发展转化为工业工具,从而大大提高高端工程利益相关者的分析和设计能力。使用学术驱动的开源框架 \nekpp 实现了新颖的发展和成果。主要目标是向工业和应用数学界提供一条可行的途径,将学术发展转化为工业工具,从而大大提高高端工程利益相关者的分析和设计能力。使用学术驱动的开源框架 \nekpp 实现了新颖的发展和成果。
更新日期:2021-11-05
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