Численная оценка двухфазной составляющей коэффициента расхода классических сопел РДТТ

Abstract

Differences in the size of condensate particles affect the characteristics of the engine. Numerical analysis can be used to quickly select a design. Modern computational fluid dynamics tools were used in this work. A two-phase model was used. As a result, the values of the flow coefficient were obtained depending on the particle size at a constant mass fraction of condensate. The calculation was carried out for an engine of the same design. Numerical results are compared with calculations based on empirical dependencies. A comparison of numerical and computational methods gave approximate values of the parameter. As a result, the differences between the methods and the values of the flow coefficients are highlighted.