首页|Parallelization strategies for resolved simulations of fluid-structure-particle interactions

Parallelization strategies for resolved simulations of fluid-structure-particle interactions

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Fluid-structure-particle interactions in three spatial dimensions happen in many environmental and engineering flows.This paper presents the parallel algorithms for the hybrid diffuse and sharp interface immersed boundary(IB)method developed in our previous work.For the moving structure modeled using the sharp interface IB method,a recursive box method is developed for efficiently classifying the background grid nodes.For the particles modeled using the diffuse interface IB method,a'master-slave'approach is adopted.For the particle-particle interaction(PPI)and particle-structure interaction(PSI),a fast algorithm for classifying the active and inactive Lagrangian points,which discretize the particle surface,is developed for the'dry'contact approach.The results show that the proposed recursive box method can reduce the classifying time from 52 seconds to 0.3 seconds.Acceptable parallel efficiency is obtained for cases with different particle concentrations.Furthermore,the lubrication model is utilized when a particle approaches a wall,enabling an accurate simulation of the rebounding phenomena in the benchmark particle-wall collision problem.At last,the capability of the proposed computational framework is demonstrated by simulating particle-laden turbulent channel flows with rough walls.

particle-resolved direct numerical simulationparticle-laden flowcomplex geometryresolved fluid-structure-particle interaction(RFSPI)immersed boundary(IB)method

Jianhua QIN、Fei LIAO、Guodan DONG、Xiaolei YANG

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The State Key Laboratory of Nonlinear Mechanics,Institute of Mechanics,Chinese Academy of Sciences,Beijing 100190,China

Interdisciplinary Center for Fundamental and Frontier Sciences,Nanjing University of Science and Technology,Jiangyin 214443,Jiangsu Province,China

School of Aeronautics,Northwestern Polytechnical University,Xi'an 710072,China

School of Engineering Sciences,University of Chinese Academy of Sciences,Beijing 100049,China

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National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaBasic Science Center Program for"Multiscale Problems in Nonlinear Mechanics"of the National Natural Science Foundation of ChChina Postdoctoral Science Foundation

1220245612172360119881022021M693241

2024

10.1007/s10483-024-3115-7

应用数学和力学(英文版)
上海大学

应用数学和力学(英文版)

影响因子：0.294
ISSN：0253-4827
年,卷(期)：2024.45(5)
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