The results of a theoretical study of the characteristics of a supersonic boundary layer on a flat plate at a Mach number under conditions of surface sublimation are presented. Naphtha-lene (C10H8) was chosen as the sublimation coating material. Early work showed that with an increase in the surface temperature, the mass consumption of evaporation of naphthalene also increases. This leads to a decrease in the wall temperature in comparison with the case of flow around a flat plate without sublimation. The large molecular weight of naphthalene in compar-ison with the molecular weight of air and a decrease in the surface temperature due to the evaporation of the wall material leads to an increase in the density of the binary mixture (air and sublimant vapor) near the wall. Such a change in the profiles of the boundary layer leads to a noticeable decrease in the local rates of growth of unstable perturbations [1]. The study of the effect of material sublimation from the surface on the flow in the boundary layer is associated with two main effects. The first of them consists in the effect of the injection of a foreign gas through surface, the second - with the expenditure of energy for the evapora-tion of the subluminous substance.
Numerical simulation of a boundary layer with sublimation coating at Mach number 2
INTERNATIONAL CONFERENCE ON THE METHODS OF AEROPHYSICAL RESEARCH (ICMAR 2020) ; 2020 ; Novosibirsk, Russia
AIP Conference Proceedings ; 2351 , 1
2021-05-24
4 pages
Conference paper
Electronic Resource
English