Numerical simulation of hydrogen jet injection and ignition in supersonic flow

Abstract

In the present paper, the numerical and experimental study of the flows in combustion chamber has been performed. The experiments were conducted in the hot-shot wind tunnel. 3D numerical simulations were conducted by means of ANSYS FLUENT 16.0 on the RANS-based approach. The comparison and joint analysis have been performed for the calculated and experimental data. The gas-dynamic analysis has been carried out for channel flows with multiple hydrogen jet injection from walls. In the calculation, the influence of jet injection angle on the mixing process and structure of the supersonic flow in the channel is carried out. Preliminary 2D numerical results with hydrogen jet injection has shown that zone of combustion extend from the area of injection and cover the whole cavity. Further 3D studies were carried out with multiple hydrogen jet injection in a channel with backward-facing step. In this case the combustion layer extends over the bottom and top walls of the channel.