Analytical study of joint heat transfer between a gasdynamic boundary layer and an anisotropic strip

Analytical study of joint heat transfer between a gasdynamic boundary layer and an anisotropic strip

When solving the problems of coupled heat transfer between viscous flows and streamlined bodies under the conditions of aerodynamic heating of aircraft, it is necessary to overcome significant difficulties. They associated primarily with determining the boundary conditions. The paper investigates th...

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Bibliographic Details
Published in:INCAS bulletin Vol. 12; no. S; pp. 233 - 243
Main Authors: ZIN HEIN, Thant, GARIBYAN, Boris A., VAKHNEEV, Sergey N., TUSHAVINA, Olga V., FORMALEV, Vladimir F.
Format: Journal Article
Language:English
Published: Bucharest INCAS - National Institute for Aerospace Research "Elie Carafoli" 2020
National Institute for Aerospace Research “Elie Carafoli” - INCAS
Subjects:
Aerodynamic heating
Boundary conditions
Boundary value problems
components of the thermal conductivity tensor
Computational fluid dynamics
conjugate problem
Critical point
Exact solutions
Fredholm equations
Heat flux
heat fluxes
Heat transfer
Incompressible boundary layer
Integral equations
Mathematical analysis
Numerical methods
Streamlined bodies
Strip
Thermal conductivity
viscosity
Viscous flow
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Summary:When solving the problems of coupled heat transfer between viscous flows and streamlined bodies under the conditions of aerodynamic heating of aircraft, it is necessary to overcome significant difficulties. They associated primarily with determining the boundary conditions. The paper investigates the joint (coupled) heat transfer between a heat and gas dynamic boundary layer and an anisotropic strip under conditions of aerodynamic heating based on the obtained analytical solution of the second initial boundary value problem of thermal conductivity in an anisotropic strip with arbitrary boundary conditions. Since the system of equations of the gasdynamic boundary layer is essentially nonlinear, mainly numerical methods are used to solve it. For an incompressible boundary layer near the critical point of a blunt wedge, an analytical solution is obtained to determine the components of the velocity vector, density, temperature, and heat fluxes. The closed-form solution to the conjugate problem was received in the form of a Fredholm integral equation of second kind. The results of numerical experiments are obtained and analyzed.
ISSN:2066-8201
2247-4528
DOI:10.13111/2066-8201.2020.12.S.22