Development of Mezzo-Scale Thermo-Physical Model and Chemical Reaction Model for Supercritical Combustion Flow

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The multi-scale method for the hydrogen/oxygen supercritical combustion flow under high pressure is applied to understand the thermo-physical phenomena. The present study is focused on (1) the construction of thermo-physical properties and equation of state, (2) the modification of the chemical reaction model, and (3) the improvement of the compressible Navier-Stokes solver by using the preconditioning method. For the first task, the temperature and density saturation curve for the molecular dynamics simulations were compared with those for NIST data to show the agreement under the small rotational quantum effects. For the second task, the chemical reaction model was improved to show that the ignition delay times and the laminar flame velocities for the present model agreed well with the experimental data. For the third task, the compressible flow solver with the preconditioning method showed the ability to solve such the low speed flow around a cylinder and an aerofoil.