Flow developments above 50-deg sweep delta wings with different leading-edge profiles

J. Miau; K. T. Kuo; W. H. Liu; S. J. Hsieh; J. H. Chou; C. K. Lin

doi:10.2514/3.46792

Flow developments above 50-deg sweep delta wings with different leading-edge profiles

J. Miau, K. T. Kuo, W. H. Liu, S. J. Hsieh, J. H. Chou, C. K. Lin

Research output: Contribution to journal › Article › peer-review

45 Citations (Scopus)

Abstract

The characteristics of flow developments above 50-deg sweep delta wings with different leading-edge profiles are shown by flow visualizations and velocity measurements. The Reynolds number based on freestream velocity and root chord is about 7 × 10³. The leading-edge profiles studied include the shapes of square, round, windward surface beveling, leeward surface beveling, and wedge. Based on the velocity data obtained along the leading edges of the delta wings it is noted that the flow angles associated with the separated shear layers vary with the leading-edge profiles studied. This finding infers that varying the leading-edge profile has an impact on the initial development of the separated shear layer, consequently, the formation of leading-edge vortex. Furthermore, it is shown that the leading edge of windward beveling causes the largest leading-edge flow angle and produces the most organized leading-edge vortex.

Original language	English
Pages (from-to)	787-794
Number of pages	8
Journal	Journal of Aircraft
Volume	32
Issue number	4
DOIs	https://doi.org/10.2514/3.46792
Publication status	Published - 1995

All Science Journal Classification (ASJC) codes

Aerospace Engineering

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10.2514/3.46792

Cite this

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title = "Flow developments above 50-deg sweep delta wings with different leading-edge profiles",

abstract = "The characteristics of flow developments above 50-deg sweep delta wings with different leading-edge profiles are shown by flow visualizations and velocity measurements. The Reynolds number based on freestream velocity and root chord is about 7 × 103. The leading-edge profiles studied include the shapes of square, round, windward surface beveling, leeward surface beveling, and wedge. Based on the velocity data obtained along the leading edges of the delta wings it is noted that the flow angles associated with the separated shear layers vary with the leading-edge profiles studied. This finding infers that varying the leading-edge profile has an impact on the initial development of the separated shear layer, consequently, the formation of leading-edge vortex. Furthermore, it is shown that the leading edge of windward beveling causes the largest leading-edge flow angle and produces the most organized leading-edge vortex.",

author = "J. Miau and Kuo, {K. T.} and Liu, {W. H.} and Hsieh, {S. J.} and Chou, {J. H.} and Lin, {C. K.}",

note = "Funding Information: This work was supported by the National Science Council,",

year = "1995",

doi = "10.2514/3.46792",

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journal = "Journal of Aircraft",

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publisher = "American Institute of Aeronautics and Astronautics Inc. (AIAA)",

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T1 - Flow developments above 50-deg sweep delta wings with different leading-edge profiles

AU - Miau, J.

AU - Kuo, K. T.

AU - Liu, W. H.

AU - Hsieh, S. J.

AU - Chou, J. H.

AU - Lin, C. K.

N1 - Funding Information: This work was supported by the National Science Council,

PY - 1995

Y1 - 1995

N2 - The characteristics of flow developments above 50-deg sweep delta wings with different leading-edge profiles are shown by flow visualizations and velocity measurements. The Reynolds number based on freestream velocity and root chord is about 7 × 103. The leading-edge profiles studied include the shapes of square, round, windward surface beveling, leeward surface beveling, and wedge. Based on the velocity data obtained along the leading edges of the delta wings it is noted that the flow angles associated with the separated shear layers vary with the leading-edge profiles studied. This finding infers that varying the leading-edge profile has an impact on the initial development of the separated shear layer, consequently, the formation of leading-edge vortex. Furthermore, it is shown that the leading edge of windward beveling causes the largest leading-edge flow angle and produces the most organized leading-edge vortex.

AB - The characteristics of flow developments above 50-deg sweep delta wings with different leading-edge profiles are shown by flow visualizations and velocity measurements. The Reynolds number based on freestream velocity and root chord is about 7 × 103. The leading-edge profiles studied include the shapes of square, round, windward surface beveling, leeward surface beveling, and wedge. Based on the velocity data obtained along the leading edges of the delta wings it is noted that the flow angles associated with the separated shear layers vary with the leading-edge profiles studied. This finding infers that varying the leading-edge profile has an impact on the initial development of the separated shear layer, consequently, the formation of leading-edge vortex. Furthermore, it is shown that the leading edge of windward beveling causes the largest leading-edge flow angle and produces the most organized leading-edge vortex.

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Flow developments above 50-deg sweep delta wings with different leading-edge profiles

Abstract

All Science Journal Classification (ASJC) codes

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