多相流与矩方法的数学模型

[ZhangMengYi]

@李东岳 李老师好，您那边有discrete bubble model的代码吗

[李东岳]

@ZhangMengYi 没有，好像只见过Deen那面搞过，不知道他们能不能给你

[dxl]

@李东岳 在 多相流与矩方法的数学模型 中说：

目前普通的算法需要颗粒直径小于网格直径；

李老师这个网格尺寸和颗粒直径的比例一般是多少呢，这个比值有文献或者书籍支持吗

[李东岳]

@dxl 最近我没有关注相关算法，已经翻不到了。

[vonboett]

@李东岳
Dear Master Li

Thank you very much for this summary. I will lern from it how to continue the development of a debris flow solver that uses Eulerian VOF for air and two mixing fluids (clay-silt-sand suspension and fine gravel) and 2-way coupled Lagrangian particles for coarser gravel. It is a variation of interMixingFoam (called debrisInterMixing) combined with DPMFoam (called debrisInterMixLP).

I have one question: You stated that the Euler-Lagrange-Algorithmus is good but expensive. I would like to know your opinion, if I may implement two kinematic clouds in DPMFoam, one that accounts for particle collisions (larger stones but smaller than gridsize) and one that only accounts particle-wall collisions (many gravel particles). This way, I could model erosion...

Thank you for any comment on this
Albrecht v.Boetticher

[李东岳]

@vonboett

if I may implement two kinematic clouds in DPMFoam, one that accounts for particle collisions (larger stones but smaller than gridsize) and one that only accounts particle-wall collisions (many gravel particles). This way, I could model erosion..."

Dear Albrecht,

Thanks for your comments. The E-L algorithmn is expensive since it needs to track the lagrangian particles. So it depends on your particles' number. From what you've written, it looks you are on your right way doing this.

D