| Citation: | MAO Xiaochen, CHEN Fei, CHEN Xuan. Inverse design method of subsonic and transonic compressor blade based on improved Gappy POD[J]. Journal of Aerospace Power, 2025, 40（10）：20240046 doi: 10.13224/j.cnki.jasp.20240046
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An improved Gappy POD (proper orthogonal decomposition) method was developed in response to the low inverse design accuracy and limited operability of the method. Furthermore, improvement strategies were proposed to address the issue of lower inverse design accuracy for transonic blade compared with subsonic blade. Through verification examples, the inverse design of compressor blade based on the improved Gappy POD method was proved simpler and more efficient. Compared with the basic method, the inverse design accuracy of the two blades was improved by 61% and 78%, also the inverse design time was shortened by 77% and 63%, respectively. Further research found that the benefits of the improved method in accuracy of blade fitting mainly came from the improvement of pressure surface reconstruction accuracy, while the geometric deviation of the blade in the second half of the suction surface was relatively large, and the geometric deviation showed a trend of increasing first and then decreasing from the leading edge to the trailing edge.
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