Research on Low Speed Wind Tunnel Test Method Based on MDOE of Polynomial Response Surface
The existing modern design of experiment(MDOE)methods based on various statistical models have a large amount of calculation and complex modeling,which leads to a decrease in the efficiency of the overall wind tunnel test.In order to solve this problem,an optimization design method combining polynomial response surface model with modern design of experiment is proposed in this paper.The central composite design was used to divide the test points in the independent variable interval and the wind tunnel test was carried out to obtain the aerodynamic force.The polynomial undetermined coefficients were determined by the least square method,and the response surface model was constructed.The analysis of variance and significance test were carried out.Finally,five traditional single variable(OFAT)method test points were selected to test the fitting accuracy of the response surface model.The results show that compared with the traditional univariate wind tunnel test method,the low-speed wind tunnel test method based on polynomial response surface MDOE proposed in this paper has the advantages of easy modeling,small calculation amount and prediction calibration,which can reduce the test sample points by about 50%and effectively improve the efficiency of wind tunnel test.
polynomial response surface modelMDOEwind tunnel testcentral composite designanalysis of variance
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