热界面的耦合怎么实现？

7楼

求教，传热界面的热流连续怎么实现？

确定不了界面处的温度。

[ 本帖最后由 7楼 于 2013-9-18 10:33 编辑 ]

luo@odu.edu

The 1st one is Dirichlet boundary condition, while the 2nd is Neumann one. If so, both of them can be implemented in the context of LBE. See, for example, the following paper:

J. Wang, D.H. Wang, P. Lallemand, and L.-S. Luo.
Lattice Boltzmann simulations of thermal convective flows in two dimensions.
Computers and Mathematics with Applications 65(2):262-286 (2013).

The paper can also be downloaded from my website.

7楼

罗老师，谢谢您的回复，我的意思是要处理两相界面处的温度，这两个条件同时满足，不知道怎么解决。

luo@odu.edu

If you have an explicit interface, and the boundary conditions are the mixed one, they can be implemented by combining two types of boundary conditions, i.e., part Dirichlet and part Neumann. I must also admit that I have not done this before but don't see why it cannot be done.

Good luck.

lwd1981

将温度分成变成焓分成，在界面上焓是连续的，不就不需要边界条件了。
实在要用，那先求界面上的热传导系数，然后再求就可以了。
你需要多看看耦合或者共轭传热相关的文章，也可以看看pantakar的书和文章。

7楼

导热系数在格子条件下怎么表示？

7楼

请问大家，A note on the solution of conjugate heat transfer prob-lems using SIMPLE-like algorithms，这篇文章怎么理解？
文章里为了保证扩散的连续性，下面第一个方程需要满足。
然后取流体和固壁的比热容相等，保证热流的连续，但是这样得到的温度场不就不是真实的吗？

[ 本帖最后由 7楼 于 2013-9-25 09:26 编辑 ]

7楼

A numerical method for conduction in composite materials, flow in irregular geometries and conjugate heat transfer
Suhas V. Patankar
你有这篇文章吗？
我邮箱 601277102@qq.com  ,先谢过！