CFD is utilized to study fluid-structure interactions during the transient opening phase of a pressure valve. The motion of the valve is either prescribed or computed based on the total pressure force acting on the horizontal disk.  Moving mesh boundary conditions are then used for valve movement and mesh deformation for regions surrounding the valve. CFD simulations provide detailed information on the transient pressure and velocity fields during the opening and fully-open phases

CFD is utilized to study the design of relief valves for exhaust stacks. This model represents an industrial venting system that expels gases into the atmosphere from a high-pressure source. Flow enters the domain through an inlet tube and impinges on the underside of the relief valve, thus creating complex recirculation zones near the exit of the tube and around the disk-stem assembly. CFD simulations show that the highest pressures are observed on the underside of the valve, while maximum Mach numbers are found in the entrance region of the diverging duct.

CFD simulation of a piping system consisting of three inlets, one outlet, and one directional valve.