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On Aircraft Lift and Drag Reduction Using V Shaped Riblets

Zihai Geng1,2,*, Jinsheng Cai1, Yubiao Jiang1,2, Weiguo Zhang1,2

1 Aviation College of Northwestern Polytechnical University, Xi’an, 710072, China
2 China Aerodynamic Research and Development Center, Mianyang, 621000

* Corresponding Author: Zihai Geng. Email: email

(This article belongs to the Special Issue: EFD and Heat Transfer II)

Fluid Dynamics & Materials Processing 2021, 17(5), 899-915. https://doi.org/10.32604/fdmp.2021.012108

Abstract

Reducing drag during take-off and nominal (cruise) conditions is a problem of fundamental importance in aeronautical engineering. Existing studies have demonstrated that v-shaped symmetrical riblets can effectively be used for turbulence control, with those with dimensionless depth h+ = 15 and dimensionless width s+ = 15 having the best drag reduction effect. In the present study, experimental tests have been conducted considering two models of the same size, one with smooth surface, the other with v-shaped riblets of the h+ = 15 and s+ = 15 type. The results show that for an angle of attack in the 8°~20° range (take-off stage), the maximum lift coefficient can be increased by 22%. For angle of attack between 8° and 14°, a drag reduction effect can be produced using riblets, which increases with the Reynolds number, leading to a decrease in the drag coefficient maximum of 36%. Flow visualization experiments have been carried out by means of Laser Induced fluorescence.

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Cite This Article

APA Style
Geng, Z., Cai, J., Jiang, Y., Zhang, W. (2021). On aircraft lift and drag reduction using V shaped riblets. Fluid Dynamics & Materials Processing, 17(5), 899-915. https://doi.org/10.32604/fdmp.2021.012108
Vancouver Style
Geng Z, Cai J, Jiang Y, Zhang W. On aircraft lift and drag reduction using V shaped riblets. Fluid Dyn Mater Proc. 2021;17(5):899-915 https://doi.org/10.32604/fdmp.2021.012108
IEEE Style
Z. Geng, J. Cai, Y. Jiang, and W. Zhang "On Aircraft Lift and Drag Reduction Using V Shaped Riblets," Fluid Dyn. Mater. Proc., vol. 17, no. 5, pp. 899-915. 2021. https://doi.org/10.32604/fdmp.2021.012108



cc This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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