An immersed boundary method-discrete unified gas kinetic scheme simulation of particle-laden turbulent channel flow on a nonuniform orthogonal mesh

IF 1.7 4区工程技术 Q3 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS

International Journal for Numerical Methods in Fluids Pub Date : 2023-11-13 DOI:10.1002/fld.5246

Kairzhan Karzhaubayev, Lian-Ping Wang, Cheng Peng, Dauren Zhakebayev

引用次数: 0

Abstract

Particle-resolved simulations of turbulent particle-laden flows provide a powerful research tool to explore detailed flow physics at all scales. However, efficient particle-resolved simulations for wall-bounded turbulent particle-laden flows remain a challenging task. In this article, we develop a simulation approach for a turbulent channel flow laden with finite-size particles on a nonuniform mesh by combining the discrete unified gas kinetic scheme (DUGKS) and the immersed boundary method (IBM). The standard discrete delta function was modified according to reproducible kernel particle method to take into account mesh non-uniformity and correctly conserve force moments. Simulation results based on uniform and nonuniform meshes are compared to validate and examine the accuracy of the nonuniform mesh DUGKS-IBM. Finally, the computational performance of the nonuniform mesh DUGKS-IBM is discussed.

Abstract Image

查看原文本刊更多论文

在非均匀正交网格上模拟含颗粒湍流通道流的沉浸边界法-离散统一气体动力学方案

湍流粒子载荷流的粒子分辨模拟为探索各种尺度的详细流动物理学提供了强大的研究工具。然而，对壁界湍流颗粒载荷流进行高效颗粒分辨模拟仍是一项具有挑战性的任务。在本文中，我们结合离散统一气体动力学方案（DUGKS）和浸没边界法（IBM），开发了一种在非均匀网格上模拟富含有限尺寸颗粒的湍流通道流的方法。根据可重现核粒子法修改了标准离散三角函数，以考虑网格的不均匀性并正确保存力矩。比较了基于均匀网格和非均匀网格的仿真结果，以验证和检验非均匀网格 DUGKS-IBM 的精度。最后，讨论了非均匀网格 DUGKS-IBM 的计算性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

International Journal for Numerical Methods in Fluids 物理-计算机：跨学科应用

CiteScore

3.70

自引率

5.60%

发文量

111

审稿时长

8 months

期刊介绍： The International Journal for Numerical Methods in Fluids publishes refereed papers describing significant developments in computational methods that are applicable to scientific and engineering problems in fluid mechanics, fluid dynamics, micro and bio fluidics, and fluid-structure interaction. Numerical methods for solving ancillary equations, such as transport and advection and diffusion, are also relevant. The Editors encourage contributions in the areas of multi-physics, multi-disciplinary and multi-scale problems involving fluid subsystems, verification and validation, uncertainty quantification, and model reduction. Numerical examples that illustrate the described methods or their accuracy are in general expected. Discussions of papers already in print are also considered. However, papers dealing strictly with applications of existing methods or dealing with areas of research that are not deemed to be cutting edge by the Editors will not be considered for review. The journal publishes full-length papers, which should normally be less than 25 journal pages in length. Two-part papers are discouraged unless considered necessary by the Editors.