Computational flow analysis with boundary layer and contact representation: I. Tire aerodynamics with road contact

IF 1.5 4区 工程技术 Q3 MECHANICS
T. Kuraishi, Takuya Terahara, K. Takizawa, T. Tezduyar
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引用次数: 12

Abstract

In computational flow analysis with moving solid surfaces and contact between the solid surfaces, it is a challenge to represent the boundary layers with an accuracy attributed to moving-mesh methods and to represent the contact without leaving a mesh protection gap. The space-time topology change (ST-TC) method, introduced in 2013, makes moving-mesh computation possible even when we have contact between moving solid surfaces or other kinds of flow-domain TC. The contact is represented without giving up on high-resolution flow representation near the moving surfaces. With the ST-TC and other ST computational methods introduced before and after, it has been possible to address many of the challenges encountered in conducting this class of flow analysis in the presence of additional complexities such as geometric complexity, rotation or deformation of the solid surfaces and the multiscale nature of the flow. In this first part of a two-part article, we provide an overview of the methods that made all that possible. We also provide an overview of the computations performed for tire aerodynamics with challenges that include the complexity of a near-actual tire geometry with grooves, road contact, tire deformation and rotation, road roughness and fluid films.
边界层与接触表示的计算流分析:1 .考虑路面接触的轮胎空气动力学
在具有移动实体表面和实体表面之间接触的计算流分析中,如何准确地表示边界层,并在不留下网格保护间隙的情况下表示接触是一个挑战。时空拓扑变化(ST-TC)方法于2013年推出,即使我们在移动的固体表面或其他类型的流域TC之间有接触,也可以进行移动网格计算。在不放弃移动表面附近的高分辨率流表示的情况下表示接触。随着ST- tc和其他ST计算方法的前后介绍,有可能解决在存在额外复杂性的情况下进行此类流动分析时遇到的许多挑战,例如几何复杂性,固体表面的旋转或变形以及流动的多尺度性质。在由两部分组成的文章的第一部分中,我们概述了实现这一切的方法。我们还概述了轮胎空气动力学的计算,其中包括具有沟槽的接近实际的轮胎几何形状的复杂性、道路接触、轮胎变形和旋转、道路粗糙度和流体膜。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Journal of Mechanics
Journal of Mechanics 物理-力学
CiteScore
3.20
自引率
11.80%
发文量
20
审稿时长
6 months
期刊介绍: The objective of the Journal of Mechanics is to provide an international forum to foster exchange of ideas among mechanics communities in different parts of world. The Journal of Mechanics publishes original research in all fields of theoretical and applied mechanics. The Journal especially welcomes papers that are related to recent technological advances. The contributions, which may be analytical, experimental or numerical, should be of significance to the progress of mechanics. Papers which are merely illustrations of established principles and procedures will generally not be accepted. Reports that are of technical interest are published as short articles. Review articles are published only by invitation.
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