求助：fluent后处理中facet average与vertex average的区别与选取问题？

LeeBruce

想得到某个平面上温度分布情况，facet average与vertex average的输出值不一致，请问应该选取那个？为什么？
急！多谢！

a2883524

帮助文件关于facet average的解释
The facet average of a specified field variable on a surface is computed by dividing the summation of the facet values of the selected variable by the total number of facets.
The interior facets on a zone surface are associated with two cells (c0 and c1). The values of specified variable on such facets are computed as the average of the two cell values of the selected variable.

The boundary facet values of a specified field variable on a zone surface are computed from the boundary condition provided by the user.
The facets on a postprocessing surface are associated with one cell. The values of a specified variable on such facets are the same as the cell values of the selected variable in the associated cells.

a2883524

vertex average的解释
The vertex average of a specified field variable on a surface is computed by dividing the summation of the vertex values of the selected variable by the total number of vertices

facet average计算的是面上的值求和然后处以面的个数
vertex average计算的是面上的点的值求和然后除以点数

从这两个平均值的计算方法看，两个平均值的计算方法不一样，得到的结果就有可能不一样。