FE face 是干嘛用的？有限元子系统想改变内外流体属性怎么搞？
vaone 有限元子系统中 每建一个FE strcture 就有一个FE face 生成 请问这是干嘛用的，我只知道要想将半无限流体与FE子系统相连得通过这个FE face ，但是想要设置内外流体是水还是空气的时候跟这有关么？上面的noise control treatment是干嘛用的？ 求教 不甚感激~！ In many problems it is necessary to define various surface regions on an FE subsystem (structural, acoustic or PEM). These surface regions may, for example, represent regions where poroelastic noise control treatments (NCTs) or area isolators are applied to an FE subsystem. Alternatively, they may represent regions where an FE subsystem is coupled to an adjacent SEA acoustic cavity, semi-infinite fluid, BEM fluid or area loading (i.e. diffuse acoustic field, turbulent boundary layer, propagating wavefield, velocity constraint). In VA One these surface regions are represented by an object called an FE Face. In addition, FE faces can be used to define rigid, fluid hole and data recovery surfaces for a BEM fluid and the boundary conditions of a PEM subsystem.
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