An extension of the vortex-stream function method is developed for solving two-dimensional gas flows at low Mach numbers (M < 0.1) near localized heat release regions. The method allows simulation of the locally heated unsteady gas flows for a wide range of density changes in the computational domain. Based on the developed method, a two-dimensional gasdynamic model for a multicomponent burning process is presented. The coupled, two-dimensional Navier-Stokes equations, with the conservation of energy and species and the conservation of mass, comprise the model. Temperature dependencies for the gas thermophysical properties are taken into account in the range of 500-3000 K. Solutions using the vortex-stream function method are presented that describe the microflame structures for the combustion of a prescribed array of ammonium perchlorate oxidizer and a hydroxyl-terminated polybutadiene binder, the fuel.
ASJC Scopus subject areas
- Aerospace Engineering