Simulation Model for Vuilleumier Cycle Machines and Analysis of Characteristics

This paper describes our simulation model for the Vuilleumier (VM) machine, which is based on the 3rd-order method. The working space is divided into thirty-eight control volumes fpr the VM heat pump test machine, and the fundamental equations are derived rigorously by applying the conservative equations of mass, momentum and energy to each control volume, using stagerred mesh. These equations are solved simultaneously by the Adams-Moulton method. The test machine is investigated in terms of the pressure and temperature fluctuations of the working gas, the energy flow, ands the performance at each speed of revolution