Hi Chiwei,
According to my reading, the case we are trying to do is a bit different from the blood vessel model, which DID NOT really use the FSI module (you can read it from the model manual). The reason is that they consider the deformation of the blood vessel is small so it will not strongly affect the flow field. However, we are using the FSI and our tube deformation is big.
Specifically, I think we do not need to apply the fluid stress to the tube as boundary load as long as we set the fluid-solid interface correctly (similar to Ivan mentioned). Actually if you remove the boundary load and leave the fluid-solid interface along the model still works.
I am now trying to find out if the coupling of the two fields make sense in my simulation result. Please keep us updated and thanks for your posts.
According to my reading, the case we are trying to do is a bit different from the blood vessel model, which DID NOT really use the FSI module (you can read it from the model manual). The reason is that they consider the deformation of the blood vessel is small so it will not strongly affect the flow field. However, we are using the FSI and our tube deformation is big.
Specifically, I think we do not need to apply the fluid stress to the tube as boundary load as long as we set the fluid-solid interface correctly (similar to Ivan mentioned). Actually if you remove the boundary load and leave the fluid-solid interface along the model still works.
I am now trying to find out if the coupling of the two fields make sense in my simulation result. Please keep us updated and thanks for your posts.