Abstract:
The control method of the flux in an airpressure sealing valve was studied, where the fluid flux of the valve was changed by the deformation of some thin rings driven by the pressured air. A new iteration method was adopted to solve the fluidsolid interaction problems of the thin rings and fluid flowing through the valve. The numerical model of the rings was established in terms of the finite element analysis (FEA) method, and the model of the fluid flowing through the valve was established in terms of the computational fluid dynamics (CFD) method. The deformed outer surface of the thin rings under the pressured air was used as the geometric boundary in the analysis of the fluid model. And then in reverse, the pressure of the fluid on the outer surface of the ring was used as the boundary loading in the FEA model of the rings in the next term of calculations. The relationship between the airpressures and the thicknesses of the ring for a given flux needed was solved out, which would be important to the design of the valve and also to the control of the air pressure.