Unresolved CFD and DEM Coupled Solver for Particle-Laden Flow and Its Application to Single Particle Settlement

Journal of Marine Science and Engineering

Sunho Park¹  Seongjin Song¹ 

[1] Department of Convergence Study of Ocean Science and Technology, Korea Maritime and Ocean University, Busan 49112, Korea;

关键词: particle-laden flows;    Euler‐Lagrange methods;    computational fluid dynamics;    discrete element method;    particle settling velocity;    OpenFOAM;   

DOI  :  10.3390/jmse8120983

来源: DOAJ

【 摘 要 】

In the present study, a single particle settlement was studied using a developed unresolved computational fluid dynamics (CFD) and discrete element method (DEM) coupling solver. The solver was implemented by coupling OpenFOAM, the open-source computational fluid dynamics libraries, with LIGGGHTS, the open-source discrete element method libraries. An averaging method using a kernel function was considered to decrease the grid dependency. For the drag model of a single particle, a revised volume fraction with a particle volume expansion coefficient was applied. Falling particles in a water tank were simulated and compared with the empirical correlation. A parametric study using several integrated added mass coefficients and volume expansion coefficients from low to high Reynolds numbers was carried out. The simulations which used the developed numerical methods showed significantly improved predictions of particle settlement.

【 授权许可】

Unknown