Investigation on separated and unseparated transonic convex-corner flows

Kung Ming Chung

Investigation on separated and unseparated transonic convex-corner flows

Research output: Contribution to conference › Paper › peer-review

Abstract

A naturally developed turbulent boundary layer past convex comers was studied. Mean surface pressure in Mach 0.64 and 0.83 indicated strong inviscid-viscous interactions. Interaction region increased with Mach number and convex-comer angle. Also, unsteadiness of the interactions was characterized by an intermittent region and local peak pressure fluctuation, which was due to the amplification of lower frequency components as shown in power spectra. At higher convex-comer angle (M_∞ = 0.83 and α = 15°) the boundary layer was separated. Unsteady shock motion induced intense surface pressure fluctuation which spectrum was centered at about 780 Hz.

Original language	English
Publication status	Published - 2000 Dec 1
Event	38th Aerospace Sciences Meeting and Exhibit 2000 - Reno, NV, United States Duration: 2000 Jan 10 → 2000 Jan 13

Other

Other	38th Aerospace Sciences Meeting and Exhibit 2000
Country/Territory	United States
City	Reno, NV
Period	00-01-10 → 00-01-13

All Science Journal Classification (ASJC) codes

Space and Planetary Science
Aerospace Engineering

Cite this

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title = "Investigation on separated and unseparated transonic convex-corner flows",

abstract = "A naturally developed turbulent boundary layer past convex comers was studied. Mean surface pressure in Mach 0.64 and 0.83 indicated strong inviscid-viscous interactions. Interaction region increased with Mach number and convex-comer angle. Also, unsteadiness of the interactions was characterized by an intermittent region and local peak pressure fluctuation, which was due to the amplification of lower frequency components as shown in power spectra. At higher convex-comer angle (M∞ = 0.83 and α = 15°) the boundary layer was separated. Unsteady shock motion induced intense surface pressure fluctuation which spectrum was centered at about 780 Hz.",

author = "Chung, {Kung Ming}",

year = "2000",

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language = "English",

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T1 - Investigation on separated and unseparated transonic convex-corner flows

AU - Chung, Kung Ming

PY - 2000/12/1

Y1 - 2000/12/1

N2 - A naturally developed turbulent boundary layer past convex comers was studied. Mean surface pressure in Mach 0.64 and 0.83 indicated strong inviscid-viscous interactions. Interaction region increased with Mach number and convex-comer angle. Also, unsteadiness of the interactions was characterized by an intermittent region and local peak pressure fluctuation, which was due to the amplification of lower frequency components as shown in power spectra. At higher convex-comer angle (M∞ = 0.83 and α = 15°) the boundary layer was separated. Unsteady shock motion induced intense surface pressure fluctuation which spectrum was centered at about 780 Hz.

AB - A naturally developed turbulent boundary layer past convex comers was studied. Mean surface pressure in Mach 0.64 and 0.83 indicated strong inviscid-viscous interactions. Interaction region increased with Mach number and convex-comer angle. Also, unsteadiness of the interactions was characterized by an intermittent region and local peak pressure fluctuation, which was due to the amplification of lower frequency components as shown in power spectra. At higher convex-comer angle (M∞ = 0.83 and α = 15°) the boundary layer was separated. Unsteady shock motion induced intense surface pressure fluctuation which spectrum was centered at about 780 Hz.

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M3 - Paper

AN - SCOPUS:84894377279

T2 - 38th Aerospace Sciences Meeting and Exhibit 2000

Y2 - 10 January 2000 through 13 January 2000

ER -

Investigation on separated and unseparated transonic convex-corner flows

Abstract

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All Science Journal Classification (ASJC) codes

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