Numerical Simulation of an Unsteady Axisymmetric Flow in a Poppet Valve Using a Vortex Method
نویسندگان
چکیده
In the present study, numerical simulations of the ow in a three-dimensional axisymmet-ric poppet valve are conducted using a vortex method. The uids are assumed inviscid and incompressible. The vibration of the poppet, supported by a spring and a dash pot, occurs in the axial direction in some range of parameters. The numerical simulations are carried out by varying systematically the parameters of the calculation, namely the supply pressure, the spring constant, the mass of the poppet and the conical angle of the poppet. The process of jet ow development, the uctuations of the valve lift and the velocity distributions in the valve are investigated for the poppet vibrating.
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