Investigation on drag reduction performance of rotating blade surface with micro-texture

Submitting author affiliation:
College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics & Astronautics, Nanjing, China

Beilstein Arch. 2024, 20243.

Published 19 Jan 2024

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This preprint has not been peer-reviewed. When a peer-reviewed version is available, this information will be updated.


For enhance the aerodynamic performance of aero engine blades, the parameters and drag-reduction mechanism of micro-texture to reduce blade surface flow loss are investigated in this study. First, a simplification simulation method is proposed to reduce the calculation cost and determine the aerodynamic parameters of the blade model through the comparison of flow field characteristics and parameters of the blade simulation result. Secondly, the placement position and geometrical parameters of micro-texture with lower energy loss are determined by CFD (Computational Fluid Dynamics) simulation for the established micro-texture on the blade surface and the drag reduction mechanism is analyzed based on the simulation result. The triangular rib with a depth of 0.2mm and width of 0.3mm has the best drag reduction performance, and this micro-texture has an energy loss coefficient reduction of 1.45% and a drag reduction of 1.31% on a single blade. Finally, the blades with the optimal micro-texture parameters are tested in the intermittent wind tunnel. The experimental results show that the micro-texture decreases the energy loss by 3.7% of a single blade under the working conditions of 57° attack angle and 136.24m/s, which is pleasing for the drag reduction performance of the integral impeller with 45 blades.

Keywords: micro-texture; CFD simulation; simplification method; drag reduction; blade

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When a peer-reviewed version of this preprint is available, this information will be updated in the information box above. If no peer-reviewed version is available, please cite this preprint using the following information:

Zhu, Q.; Zhang, C.; Yu, F.; Xu, Y. Beilstein Arch. 2024, 20243. doi:10.3762/bxiv.2024.3.v1

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