Fluid-structure-thermal Coupling Analysis Of Thermal Protection System Hot Strcture

Hypersonic vehicle have great value in military applications,for this reason the hypersonic vehicle has achieved great development in this years.Hypersonic vehicle thermal protection system face severe challenges with fluid-structure-thermal dual-direction coupling effect,we do not have clear understanding of this question up to now.To address this problem,this thesis analysis the theory of fluid-structure-thermal dual-direction coupling and writing a program with APDL to couple the CFX and ANSYS to solve this problem use computer.This work will have important significance to the design of hypersonic vehicle.Analysis the thermal stress and deformation of air rudder use the one direction coupling method,and point out the necessity for the use of fluid-structure-thermal dual-direction coupling method.Fluid-structure-thermal coupling method of this thesis right of the key concepts of anatomy and detailed explanation of the logic of the relationship sorted out and clarified.And then established the mathematical and physical model.This thesis also study the interpolation method of heat flux and total force in the coupling calculation and writing a program with APDL to couple the CFX and ANSYS to solve the fluid-structure-thermal dual-direction coupling problem use computer.Use the dual-direction coupling program to analysis the arc panel and found that fluid-structure-thermal dual-direction coupling effect will make the deformation became violent on the bottom.Use the dual-direction coupling program to analysis the leading edge of the inlet with GH3230 material.The result indicate that the is qualified to the thermal protection system in this place.And the deformation is about 2.1-2.3mm in this location.