Fluid forces on exhaust valves

Lars Ola Liavåg

Dear colleagues,

I am studying the gas forces acting on the exhaust valves of a 4-stroke diesel engine. The intention is to apply the CFD results as BC's in a FEM analysis aimed at determining the valve deformation. Thus, the resultant force and its point of attack must either be calculated directly from the CFD results, or the wall force data output by STAR-CD (which appears to be the gas force in N acting on each surface shell) must be converted to force-per-area vertice data.

If anyone has experience from this sort of manipulation with STAR-CD results (and how to export them to I-DEAS), your advice would be very much appreciated.

Lars Ola