I want to do fluid/solid coupled modal caculation, the Volume A reference a Fluid Solid option to set the interface, but I cannot find fluid solid button. Thanks
"apply1" BC is on the node 17 which belongs to fluid element. Unless fluid pressure is fixed at least at one point with the FIXED DISP option, fluid potential matrix will be singular.
"apply2" BC is on node 23 which belongs to structural element.
Apart from these to nodes where BC is applied on Fluid as well as structural nodes, all other nodes are swept.
"apply1" BC is on the node 17 which belongs to fluid element. Unless fluid pressure is fixed at least at one point with the FIXED DISP option, fluid potential matrix will be singular.
"apply2" BC is on node 23 which belongs to structural element.
Apart from these to nodes where BC is applied on Fluid as well as structural nodes, all other nodes are swept.
