Research on the Application of Steady Laminar Flamelet Model Used in Two-phase Supersonic Combustion

Abstract

A numerical study was conducted to explore the computational accuracy and efficiency of steady laminar flamelet model used in two-phase supersonic combustion flow field. The combustion flow field of a double-cavity scramjet was simulated, in which liquid phase was described by the disperse particle method (DPM) with secondary break-up process. The results obtained show that the steady laminar flamelet model can decouple the equations of chemical reacting source terms and flow, and this model also can consider a detailed reaction with less computational resources. Moreover, the comparison of the numerical results with flame structure image and wall pressure distributions of the experiment show good agreement. And the detail of flow field calculated is accurate. This model greatly reduces the computational amount, and can facilitate engineering applications.