Reynolds number effect on compressible cylindrical cavity flow

Chung, Kung Ming; Huang, Yi; Lee, Kuan Huang; Chang, Keh Chin

doi:10.1016/j.cja.2019.09.005

Cited by 3 publications

(1 citation statement)

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“…Cavities are common on aerodynamic vehicles in landing gear wells and in weapon bays. Flow characteristics depend on cavity geometry, wind direction and the properties of the upstream boundary layer (laminar or turbulent, the Reynolds number and the freestream Mach number, M) [1][2][3][4]. Numerous studies involve a two-dimensional rectangular cavity flow.…”

Section: Introductionmentioning

confidence: 99%

Global Surface Pressure Pattern for a Compressible Elliptical Cavity Flow Using Pressure-Sensitive Paint

Huang,

Chung

2024

Aerospace

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The flow field in a cavity depends on the properties of the upstream boundary layer and the cavity geometry. Comprehensive studies for rectangular cavities have been conducted. This experimental study determines the global surface pressure pattern for elliptical cavities (eccentricities of 0, 0.66 and 0.87) in a naturally developed turbulent boundary layer using pressure-sensitive paint. The ratio between the length (major axis) and the depth is 4.43–21.5, and the freestream Mach number is 0.83. The mean surface pressure distribution of an elliptical cavity resembles that of a rectangular cavity. A change in the value of eccentricity (wall curvature) affects the region for an adverse pressure gradient in an open cavity, an extension of the plateau in a transitional–closed cavity and flow expansion near the front and rear edges. The boundaries between an open, transitional and closed cavities vary.

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Section: Introductionmentioning

confidence: 99%