A study of interface approximating equation for compressible flow and its application to flamelet approach model

Abstract

This research studies an interafce of compressible flow with density and pressure coupling by sound speed. A phase field appoach is applied to evaluate a source of energy equation for deriving a progres of the fluid interfaces, which is identically formulated into a level-set equation extended to the finite thickness of interafce. A traditional time-marching algorithm for compressible flows can be operated by coupling to the physical behaviour of fluid interafce through the modified equation of thermodynamic states. This approach is investigated for an apprication to a numerical model of premixed combustion flame.