Modelling and analysis for a pilot relief valve using CFD method and deformation theory of thin plates

摘要: The current work is concerned with modelling and analysis for a pilot relief valve, thus successfully bringing systematic method designing analyzing similar valves. essence of the to solve two important problems, one positions valve influenced by flow force other opening governed thin annular plate. computational fluid dynamics (CFD) used present force. Using series experiments, rate versus pressure drop shows rationality CFD results. In order obtain higher accuracy, large deflection theory plates adopted. An equivalent replacing concentrated innovatively proposed so that all loads can be given unified expression, which reduces number governing equations intermediate boundary conditions. For presenting very simple reliable solving equation, an unconstrained nonlinear optimization introduced Being verified finite-element (FEM) rapidly accurately. Reflected through complete model theoretical consistent experimental conclusion. Once again, comparisons bring us insight into accuracy adopted in work.