请教流固耦合的边界条件设置问题

大黄

fluid区与solid区的分界边在gambit中设定为wall类型，并命名为wall1，
用fluent导入后，在boundary conditions面板的zone区中会自动多出一个名为
wall1－shadow的zone。
并且在wall1以及wall1－shadow设置面板的thermal conditions选项中均有一个coupled?
型（一般只有heat flux、temperature、convection、radiation、mixed等类型选项）。
请问wall1－shadow的含义，另外，coupled热边界条件类型是否是耦合传热问题中“分区求解，边界耦合”的耦合边界？
如果是耦合传热问题的耦合边界，它们的wall thickness以及heat generation rate还需要
设置么？是否厚度只要设为很薄就可以了？热产生率如果无内部热源就设为0？

PS：我用的fluent6.2，手头只有6.0的manual，而且也未能查阅到流固耦合换热边界的相关
信息。

谢谢回复。

bppz

qs1：你是使用了solid区域，所以wall有一个是属于solid的，那个shadow就是属于fluid区域的
qs2：不清楚，我想应该是耦合面的温度始终一致，但有热流量
6.2的帮助里有couple的介绍，你找个看看

大黄

好不容易下到一个6.2的帮助，却没查询到coupled热边界条件的介绍。。。
难道不是跟其它热边界条件一起介绍的么？
麻烦指点，谢谢。

大黄

终于找到了。
Thermal Conditions for Two-Sided Walls
If the wall zone has a fluid or solid region on each side, it is called a "two-sided wall';';. When you read a grid with this type of wall zone into FLUENT, a "shadow';'; zone will automatically be created so that each side of the wall is a distinct wall zone. In the Wall panel, the shadow zone';s name will be shown in the Shadow Face Zone field. You can choose to specify different thermal conditions on each zone, or to couple the two zones:
    * To couple the two sides of the wall, select the Coupled option under Thermal Conditions. (This option will appear in the Wall panel only when the wall is a two-sided wall.) No additional thermal boundary conditions are required, because the solver will calculate heat transfer directly from the solution in the adjacent cells. You can, however, specify the material type, wall thickness, and heat generation rate for thin-wall thermal resistance calculations, as described above. Note that the resistance parameters you set for one side of the wall will automatically be assigned to its shadow wall zone. Specifying the heat generation rate inside the wall is useful if, for example, you are modeling printed circuit boards where you know the electrical power dissipated in the circuits but not the heat flux or wall temperature.

lmmudi

你好，你用的manual 能不能传上来，大家分享一下，谢谢

lmmudi

我也正在做固液两相流动的问题，想找点东西看看，多谢

大黄

我就是从fluent帮助文档找到的那段话。。。而且，帮助文档很大，几百M，传到这里的话不太可能。

song4817077

To couple the two sides of the wall, select the Coupled option under Thermal Conditions. (This option will appear in the Wall panel only when the wall is a two-sided wall.) No additional thermal boundary conditions are required, because the solver will calculate heat transfer directly from the solution in the adjacent cells.
他说是“不需要给定额外的热边界条件，因为求解器会直接从临近的单元计算热传导”。
可是，Fluent是怎么计算的呢？原理是什么，有哪位大侠能告诉我吗？
真心求指教啊

song4817077

To couple the two sides of the wall, select the Coupled option under Thermal Conditions. (This option will appear in the Wall panel only when the wall is a two-sided wall.) No additional thermal boundary conditions are required, because the solver will calculate heat transfer directly from the solution in the adjacent cells.
他说是“不需要给定额外的热边界条件，因为求解器会直接从临近的单元计算热传导”。
可是，Fluent是怎么计算的呢？原理是什么，有哪位大侠能告诉我吗？
真心求指教啊