報錯內容：Surface assembly has facets that are not oriented properly with respect to each other. Check the element connectivities for underlying elements 51221 instance fluid1-1 and 65798 instance fluid1-1 (sharing the common edge whose end points are nodes 49233 instance fluid1-1 and 49235 instance fluid1-1), as well as the *surface data cards to ensure that the surface normals are consistent. This message will not be repeated for other facets on this surface with similar problem.

網格的法線方向已經檢查過了都是朝外的