Numerical Simulation And Experiment Research Of The Individual Compound Rocket-Engine

Conceptual design scheme of compound rocket-engine has been given in this paper. Numerical simulation and experiment research about prototype have been done in order to solve the problems about bad phenomenon such as noises,light,blaze and smoke existing during the blast-off process of individual rocket effectively. This work can present important gist and valuable reference opinions for blast-off of individual rockets in limited space. The main points are as follows:1) Conceptual design schemeBased on specific object of research, technique solving scheme has been given. Coaxial and parallel jetting method, just like multiple, annular and serried liquid jets jet around combustion gas jetting flow, has come to be true. Structure design scheme has also been completed.2) Numerical simulationPhysical and mathematic models for interior ballistics working process and unsteady gas-liquid two-phase flow field have been built. We adopt certain initial and boundary conditions. Numerical analysis about variation law of parameters in the working process of compound rocket-engine have been done. The theoretical basis for availability of conceptual design scheme has been established.3) Experiment researchThe experiment devices of compound rocket-engine have been processed and the test-bed has been built. We have gained the curves about axial thrust, the wall pressure distribution in combustion chamber,reservoir and mixing chamber in the working process of compound rocket-engine and high-speed photography of gas-liquid two-phase flow. By analysing and comparing between simulation results and experiment data, it shows that the conceptual design scheme is feasible.