yjhp1016
commented
9 months ago 突然上升一般是simulation crash 了，你用的边界条件全是periodic 吗？ 你的孔隙结构是否对称？ 试着降低CapA 试试， CapA 是表面张力的参数，一般数值不稳定都出现在界面处，所以降低表面张力有利于数值温度
另外只用一个方向的bodyforce试试，比如只有fx 不要这么大，试试fx=1e-4之类的
CapA fx,fy范围和geometry 有关系 （其实是网格解析度），不好说一个范围
On Sat, 9 Dec 2023 at 07:32, renxiaosa00 @.***> wrote:
image.png (view on web) https://github.com/yjhp1016/taichi_LBM3D/assets/36992106/ff718757-f737-4ff8-b4a4-4bcfc08255f4 这是我的孔隙结构，然后，设置niu_l = 0.1, niu_g = 0.1,psi_solid = 0.7, fx=5e-3 fy=-5e-3,CapA = 2e-3模拟结果CO2饱和度会突然饱和，改变capA分别为2e-2 or 2e-1，都会发生这样的突然饱和，这种情况在流动上显示的是，刚开始在孔隙流动，突然下一步就饱和了，这个一般是要怎么根据结构调整参数呢，我看psi_solid 范围是【-1，1】这个对应实际角度是怎么个换算关系呢？还有capA，fx，fy的实际应用范围是什么样呢？
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renxiaosa00
Vivia93
Dear author,
Hello. Thank you very much for publishing your work. I am greatly benefited from studying. In the post-processing stage, I have a question. When processing a group in Paraview, I chose the "rho" option, but the images in each step did not change. What is the reason for this? Is it a normal phenomenon?
I hope to receive your answer.