Optimization Of Heat Transfer Structure Considering Fluid-Solid Coupling

The topology optimization method has been developed rapidly.It has been widely used in various industrial design fields,and its applied disciplines have gradually expanded from structural mechanics to hydrodynamics,thermodynamics,electromagnetics and other disciplines.The topology optimization method has been further promoted with the development of new technologies such as additive manufacturing.Over the past fifteen years,the relevant scholars have applied the topology optimization method to the field of fluid-solid coupling,but the researches on topology optimization of heat transfer structure considering fluid-solid coupling is still less founded.Especially,the work of topology optimization of heat transfer structure both considering fluid-solid coupling and structural deformation is very rare.In this paper,based on SIMP method,a topological optimization design method of heat transfer structure both considering fluid-solid coupling and structural deformation is proposed.This method takes flow field,thermal field and structural deformation field into account,and is suitable not only for two-dimensional problem,but also valid for three-dimensional problem.Firstly,the actual structure of turbine engines casing is taken as a model for parameter optimization.With the help of commercial software ANSYS Workbench,the parameter optimization design for the active cooling structure of the h turbine engines casing is carried out efficiently,whose objective functions are reducing the average temperature and maximal deformation of the structure under given pressure drop and thermal power.Then,in order to further study on the design of the cooling structure of turbine engines casing,the above proposed method is used to realize the topological optimization for its simplified model by the commercial software COMSOL.The different models with different inlet position,different inlet boundary conditions and different objective functions are explored.Finally,the basic design idea of cooling structure of turbine engines casing is achieved successfully.