Моделирование теплопереноса в слое разлагающегося материала теплозащитного покрытия спускаемого аппарата

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Моделирование теплопереноса в слое разлагающегося материала…
ISSN 0236-3941. Вестник МГТУ им. Н.Э. Баумана. Сер. Машиностроение. 2016. № 6 31
Просунцов Павел Викторович — д-р техн. наук, профессор кафедры «Ракетно-
космические композитные конструкции» МГТУ им. Н.Э. Баумана (Российская Федера-
ция, 105005, Москва, 2-я Бауманская ул., д. 5).
Просьба ссылаться на эту статью следующим образом:
Баринов Д.Я., Просунцов П.В. Моделирование теплопереноса в слое разлагающегося мате-
риала теплозащитного покрытия спускаемого аппарата // Вестник МГТУ им. Н.Э. Баумана.
Сер. Машиностроение. 2016. № 6. C. 22–32. DOI: 10.18698/0236-3941-2016-6-22-32
MODELING OF HEAT TRANSFER IN DECOMPOSABLE MATERIALS
OF THERMAL PROTECTION COATING OF REENTRY VEHICLE
. Barinov1
P.V. Prosuntsov 2
1 Federal State Unitary Enterprise All-Russian Scientific Research Institute
of Aviation Materials, Moscow, Russian Federation
2 Bauman Moscow State Technical University, Moscow, Russian Federation
Abstract Keywords
In this research we carried out mathematical modeling of the heat
transfer in the element of thermal protection system (TPS) of the
space reentry vehicle. One-dimensional formulation of the prob-
lem has been considered. The TPS element consists of three
layers: a decomposable material, fibrous insulating material and a
metal power structure. We developed physical and mathematical
models of heat and mass transfer in the element of thermal pro-
tection. Furthermore, by means of the finite-element method in
the software package Marc. Software Marc, we calculated the
temperature fields during the descent to the Earth. We also ob-
tained the carbonized layer depth and the temperature of the
beginning of pyrolysis. Finally, we examined the influence of such
parameters as emissivity of the TPS surface, thermal conductivity
of a decomposable material in the area of medium and high
temperatures, the activation energy of the material on the thermal
state of the coating and the temperature of the power structure.
Findings of the research show, that the biggest effect on the tem-
perature of metal construction is provided by the activation ener-
gy and thermal conductivity in the area of medium temperatures,
while the surface temperature is determined by emissivity of the
surface. Thermal conductivity of a decomposable material in the
area of high temperatures does not influence the temperature field
of the TPS element
Mathematical model,
reentry, vehicle, thermal protec-
tion, decomposable material,
ablation
REFERENCES
[1] Nikitin P.V. Teplovaya zashchita [Thermal protection]. Moscow, MAI Publ., 2006. 512 p.
[2] Polezhaev Yu.V., Yurevich F.B. Teplovaya zashchita [Thermal protection]. Moscow,
Energiya Publ., 1976. 392 p.