Supersonic Nozzle Optimization Design with Spline Curves Fitting the Nozzle Profiles

Xibei Gongye Daxue Xuebao

关键词: supersonic nozzle;    optimization design;    spline curves;    gaussian process model;    computational fluid dynamics;   

DOI  :  10.1051/jnwpu/20183640785

来源: DOAJ

【 摘 要 】

Supersonic nozzle contour optimization design was applied to 0.6m×0.6m continuous transonic wind tunnel to improve flow quality in the test section. The Mach number root mean square deviation with the design value was chosen as optimization target. And the CFD results were verified with experimental results. Cubic spline curves with the optimal interpolating point distribution scheme were used to fit the nozzle contour. Efficient global optimization based on the Gaussian process surrogate model was used to reduce the times of evaluation. Results indicate that, the optimization framework can generate a supersonic nozzle contour with better flow quality and more accurate Mach number and that the optimal Mach number root mean square deviation is 0.001.

【 授权许可】

Unknown