Simulation Research on Roots Tri-propellant Proportion Controller

Tri-propellant proportion controller is a key part of underwater heat engine energy supply system, its proportional precision is very important for exploiting the energy efficiency of the propellant. And for Roots tri-propellant proportion controller, its proportional control precision is mainly affected by the leakage volume of each way. In this paper, based on the analysis of mechanics and leakage volume of Roots tri-propellant proportion controller, a mathematical model is established, and numerical simulations are performed via MATLAB. Consequently, the variation rules of the important parameters, such as the utilization factor of area, the interior diameter of stator, the total height of impeller, and the end face clearance, are obtained. And the influences of these parameters on proportional precision are analyzed. This study may be applied to the development of Roots tri-propellant proportion controller.