Complex Speed-class Torpedo Turbine Simulation

More and more higher performance of thermodynamic propulsion system of torpedo is required to adapt to the present-day sea fight. As the central part of torpedo, thermodynamic propulsion system is the key technique in the field of research and manufacture of torpedo. With the rapidly development of the computer technology, digital simulation technology is widely using now in all kind of engineering field. Digital simulation in weapon system has come force in recent year in much country and will develop rapidly in near future. Especially in the field of torpedo thermodynamic propulsion system which is more and more complicated, digital simulation technology may shorten the period of research, reduce the costing greatly, adjust more agility and handily and so on. It has important significance and rangy applying prospect. Based on the theory of engineering thermodynamics, this paper profoundly analyzed the work theory of torpedo turbine engine and established the mathematics model of turbine engine. Firstly, we design the structure of torpedo turbine engine according to the most important work condition (namely design condition) and found its mathematics model. The main work parameter of turbine engine are original parameter of gas such as P~, T and back press (express as P1), rotate speed (express as N). When the work condition is changed, all these parameter may vary independently, this led to some parameter of 2 the former model changing. Aim at all kind of work condition, We adopted the measure of pre- estimate and rectify and program to calculate the parameter which has changed. Then we get the accuracy mathematics model of the parallelism work condition. We established the mathematics model of the, whole torpedo thermodynamic propulsion system which adopt unclose cycle form. Based on the math model we simulated the typical work state of the torpedo propulsion system: steady state, process of changing speed of the torpedo in the same depth and changing depth in the same speed. According to the math model of turbine, we bring forward a kind of measure to adjust the turbine during the transition process.