Control effect study on thermal boundary loading in optimization design of turbine disk

For the optimization design of aeroengine turbine disk structure, the reasonable temperature and stress distribution was obtained by changing the thermal boundary loading coefficients of rim and hub under the constant heating and cooling condition. An optimization design process including modeling,CFD analysis, FE(finite element analysis) was developed based on ISIGHT softwave which is used to solve fluid-heat-structure coupling problems and the effect of optimization design of turbine disk structure imposed on thermal boundary loading was explored. Result shows that the optimization result varies from the different thermal boundary loading coefficients.The maximum equivalent stress of disk hub decreases 5.93% and 12.01% respectively, the mass of disk decreases 1.25% and 2.24% respectively when the thermal boundary loading coefficients of 0.1 and 0.2.