Analysis on Internal Flow Fields in Different Launch Valve Core Structures in Emergent Launching Condition

A program-controlled valve, which can complete launch mission in emergent condition, is vital to ensure successful launching of a torpedo in war. To explore whether the valve core can keep good launching quality in emergent conditions, the finite element simulation software FLUENT is employed to simulate the internal flow fields in three kinds of valve core structures. Contrast analysis show that the double trapezoidal-double rectangular valve core structure can effectively reduce the loss during energy going through the valve core, hence enhance launching quality. This research may provide a reference for further optimization of transient energy injection and control as well as reduction of transient noise during launching process.