Molecular Gas Dynamical Approach for the Initial Combustion of Hydrogen Gas in Supersonic Shear Flow: The 1st Report: Mixing and Diffusion Process

Direct Simulation Monte Carlo (DSMC) method based on the Boltzmann equation, in-cooperating a new reactive inelastic molecular collision model, has been employed to analyze the fuel gas mixing in two-dimensional supersonic shear flow which originates from the meeting at a thin plate (lip) edge of two parallel flows, a supersonic air stream and a sonic hydrogen gas flow. In the present study, the influence of hydrogen gas temperature upon the mixing within the shear layer is clarified. In a companion paper (the 2nd report), the relationship between mixing and chemical reaction will be presented.