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On the Boundary-Layer Control Through Momentum Injection: Numerical, Flow Visualization, and Experimental Studies

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Flow Visualization VI

Abstract

The concept of Moving Surface Boundary-layer Control (MSBC) as applied to two-dimensional airfoils is investigated through a planned numerical simulation program, complemented by wind tunnel tests and extensive flow visualization study. The moving surface was provided by rotating cylinders located at the leading edge and upper surface of the airfoil. The results suggest that the concept is quite promising and can provide a substantial increase in the lift and a delay of the stall. The maximum coefficient of lift realized was around 2. 4, approximately three times that of the base airfoil. The stall was delayed from around 10° to 48°! Application of the MSBC procedure to bluff bodies showed a remarkable decrease in the pressure drag.

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References

  1. Modi, V. J.; Sun, J. L. C.; Akutsu, T.; Lake, P.; Swinton, P. G.; and Mullins, D.: Moving surface boundary-layer control for aircraft operation at high incidence. Journal of Aircraft. 18 (1981) 963–968.

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  2. Mokhtarian, F.: Fluid dynamics of airfoils with moving surface boundary-layer control. Ph. D. Thesis. University of British Columbia, Vancouver, B. C., Canada 1988.

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  3. Modi, V. J.; Ying, B.; and Yokomizo, T.: Boundary-layer control of bluff bodies through momentum injection. 1990 SAE International Bus/Truck Meeting and Exposition, Detroit, U. S. A. 1990; also SAE Transactions, Journal of Commercial Vehicles, Section 2. 99 (1991) 778–794.

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Author information

Authors and Affiliations

  1. Department of Mechanical Engineering, University of British Columbia, Vancouver, B. C., Canada, V6T 1Z4

    V. J. Modi

  2. Department of Mechanical Engineering, Kanto Gakuin University, Mutsuura, Kanazawa, Yokohama, 236, Japan

    T. Yokomizo

Authors
  1. V. J. Modi
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  2. T. Yokomizo
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Editor information

Editors and Affiliations

  1. Dept. of Mechanical Engineering, Tokai University, Kitakaname, Hiratsuka Kanagawa, 259-12, Japan

    Yoshimichi Tanida

  2. Dept. of Mechanical Systems Engineering, Toyama Prefectural University, Kosugi-machi Toyama, 939-03, Japan

    Hiroshi Miyashiro

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© 1992 Springer-Verlag Berlin Heidelberg

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Modi, V.J., Yokomizo, T. (1992). On the Boundary-Layer Control Through Momentum Injection: Numerical, Flow Visualization, and Experimental Studies. In: Tanida, Y., Miyashiro, H. (eds) Flow Visualization VI. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-84824-7_45

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  • DOI: https://doi.org/10.1007/978-3-642-84824-7_45

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-84826-1

  • Online ISBN: 978-3-642-84824-7

  • eBook Packages: Springer Book Archive

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