Macroscopic particle method for channel flow over porous bed

Engineering Applications of Computational Fluid Mechanics

Yee-chung Jin¹  Lei Fu² 

[1] University of Regina;Water Resources and Water Environment Institute;

关键词: particle method;    channel flow;    porous bed;    macroscopic model;    boundary conditions;   

DOI  :  10.1080/19942060.2017.1331866

来源: DOAJ

【 摘 要 】

This paper presents a new macroscopic mesh-free particle method in which Darcy’s and Forchheimer’s terms are introduced into the governing equation to ensure the capacity of the particle method in simulating laminar and turbulent porous medium flows. A developed interfacial condition and inflow boundary condition are implemented in the macroscopic particle method to improve the stability of the Particle-based model. The comparisons of channel flow over and within porous bed among the present method, previous mesh-based method, and experimental data show that the macroscopic particle method is capable of simulating flows in both the clear flow region and porous flow region. Finally, two cases of flow over a rigid box and a cylinder lying on porous bed are simulated, and the numerical results are in good agreement with the measured data. The analysis and comparisons indicate that the newly developed particle-based method is reliable and has been successfully extended to macroscopic porous medium simulation.

【 授权许可】

Unknown