李多, 曹军义, 张征宇, 黄叙辉. 跨声速风洞现代试验设计方法应用研究[J]. 空气动力学学报, 2018, 36(1): 26-30. DOI: 10.7638/kqdlxxb-2015.0196
引用本文: 李多, 曹军义, 张征宇, 黄叙辉. 跨声速风洞现代试验设计方法应用研究[J]. 空气动力学学报, 2018, 36(1): 26-30. DOI: 10.7638/kqdlxxb-2015.0196
LI Duo, CAO Junyi, ZHANG Zhengyu, HUANG Xuhui. Applications of modern design of experiment method in transonic wind tunnel[J]. ACTA AERODYNAMICA SINICA, 2018, 36(1): 26-30. DOI: 10.7638/kqdlxxb-2015.0196
Citation: LI Duo, CAO Junyi, ZHANG Zhengyu, HUANG Xuhui. Applications of modern design of experiment method in transonic wind tunnel[J]. ACTA AERODYNAMICA SINICA, 2018, 36(1): 26-30. DOI: 10.7638/kqdlxxb-2015.0196

跨声速风洞现代试验设计方法应用研究

Applications of modern design of experiment method in transonic wind tunnel

  • 摘要: 针对单变量风洞试验方法存在试验结果表达不直观、试验效率低、忽略变量间交互作用等缺点,在2.4m×2.4m跨声速风洞开展了现代试验设计方法应用研究。分析了试验区间划分、数据量确定、数据点分布等试验设计重要环节,开展风洞试验获取了各试验点的气动系数,建立了试验数据的响应面模型,并通过查看额外试验点是否落入模型95%置信区间的方式评价了所建立模型的拟合精度。结果表明,本文提出的MDOE风洞试验方法仅需传统方法20%的数据量,吹风时间仅占传统方法的50%,同时在试验结果表达、更多响应值的提供、交互作用体现等方面更有优势。

     

    Abstract: In order to overcome the shortages of the one factor at a time (OFAT) wind tunnel tests, such as slow test efficiency, neglected variable interaction, and indirect expression of test results, a modern design of experiment (MDOE) method for wind tunnel experiments has been performed in a 2.4m×2.4m transonic wind tunnel. In this paper, the test space dividing, test data number calculating and data point distributing have been illustrated. The aerodynamic coefficients at tested points have been acquired through wind tunnel experiments. The response surface model has been established, and its accuracy has been verified by checking the additional acquisition data points within the 95% confidence interval. The results indicate that the proposed MDOE method only uses 20 percent of data points and 50 percent of experimental time of traditional methods. This method possesses a better performance in describing experiment results, providing response results, and revealing variable interaction relationship.

     

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