Abstract
The conjugate problem of aerodynamics and thermomechanics for a composite structures made of ablating composite material such as carbon/phenolic or glass/phenolic is considered. The problem includes a three-dimensional Navier-Stokes system of equations - for a high-speed flow around the structure, as well as a system of internal heat and mass transfer in an ablating composite and a three-dimensional theory of elasticity of anisotropic material with variable properties. To solve the conjugate system of equations, a numerical algorithm is developed based on the finite-volume method for solving the Navier-Stokes equations and the finite-element method for solving the equations of heat and mass transfer and thermomechanics. Examples of computations for modeling reentry vehicles are presented. The features of the distribution of heat and mass transfer fields and thermal stresses in the structures caused by the effects of thermal decomposition of the composite during non uniform heating are shown.
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