A flow-through cavity with movable top and flexible bottom. The low structural stiffness leads to a strong added mass effect. Only iterative coupling leads to a stable simulation. The Quasi-Newton relaxation is used in order to accelerate the convergence in each time step.
The simulation uses an exhaust manifold to couple a solid heat transfer model with a fluid heat transfer model in a steady state analysis. Prior to a coupled simulation an uncoupled flow simulation with simplified boundary conditions is carried out.