311 Numerical Analysis for Mixing Process of High-speed Unsteady Jets Using PDF-CFD Model

Abstract

The mixing process for a high-speed unsteady jet of methane and hydrogen is analyzed using computational fluid dynamics included in heterogeneity of mixture concentration with stochastic approach. The non-uniform states of turbulence mixing is statistically described using the probability density functions (PDF). The results show that the time-development of micro-mixing process is successfully described with this PDF model. Also, the difference of local heterogeneity between methane and hydrogen jets is investigated.