【求助】关于Noble and Torczynski 的浸润动边界问题

pakchoi1987

请问哪位（包括Prof.Luo）是否看过Noble D, Torczynski J. 的关于IB的这篇文章A lattice Boltzmann method for partially saturated cells. International Journal of Modern Physics C 1998; 9:1189–1201.（见附件）？
我有以下理解：文中提到了修正的碰撞项：
Ωs= f−i(x; t) − fi(x; t) + feqi (rho; Us) − feq−i（rho; u)，同时提出了一个weighting function B(::.), 当B()不等于0的时候，作为边界条件。
我想请问当B不为0时，这个碰撞算子作用的是边界节点（流固接触面）还是整个（例如）圆盘覆盖的网格节点呢？被这个边界条件的提法困扰住了。
先谢谢啦！

[ 本帖最后由 pakchoi1987 于 2011-3-25 14:54 编辑 ]

luo@odu.edu

The boundary algorithm is applied to those nodes at "boundary", i.e., the nodes defining the cyclinder in your example. Whether or not it is applied to the nodes inside the cylinder makes no difference.

BTW, you can solve the problem ANALYTICALLY for the channel flow and you will understand EVERYTHING. You should at leave try something like that once in your life so you would have a better understanding of what those guys are talking about.

pakchoi1987

谢谢罗教授！这里可能是受Ladd教授的颗粒流文章中“shell”的影响。我会从基础抓起的。