Stereoscopic PIV Measurements of a Screeching Supersonic Jet

被引：13

作者：

Alkislar M.B. ^{[1
,2
,3
]}

Lourenco L.M. ^{[1
,2
,3
]}

Krothapalli A. ^{[1
,2
,3
]}

机构：

[1] Department of Mechanical Engineering, Florida A&M University and Florida State University, Tallahassee, FL

[2] Department of Mechanical Engineering, Florida A&M University and Florida State University, Tallahassee, FL

[3] Department of Mechanical Engineering, Florida A&M University and Florida State University, Tallahassee, FL

来源：

Journal of Visualization | 2000年 / 3卷 / 2期

关键词：

3D PIV; Aeroacoustics; Flow-acoustic interaction; Screech; Stereoscopic PIV; Supersonic jets;

D O I：

10.1007/BF03182406

中图分类号：

学科分类号：

摘要：

The effect of acoustic feed back on global flow response is illustrated through an example of a rectangular screeching jet operating at a nominal Mach number of 1.69. Using a stereoscopic Particle Image Velocimetry, the detailed flow characteristics within a screeching cycle are obtained with fidelity. To resolve the "bias" errors inherent with standard PIV image processing technique, a novel mesh-free and high spatial resolution scheme is implemented to yield accurate velocity measurements in a complex three-dimensional supersonic flow. The axis-switching phenomenon that arises due to unusual mixing enhancement in the minor axis plane of a rectangular jet is vividly displayed. Strong streamwise vortex structure in the jet shear layers, enhanced by the inherent instability of the shear layer, is reported.

引用

页码：135 / 143

页数：8

共 13 条

[1]

Alkislar, M.B., (2000) Flow Field Measurements in a Screeching Rectangular Jet, , PhD Thesis, in preparation

[2]

Berman, C.H., Ffowcs Williams, J.E., Instability of a Two-Dimensional Compressible Jet (1970) Journal of Fluid Mechanics, 42, p. 151

[3]

Krothapalli, A., Baganoff, D., Karamcheti, K., On the Mixing of a Rectangular Jet (1981) Journal of Fluid Mechanics, 107, p. 201

[4]

Krothapalli, A., Hsia, Y., Baganoff, D., Karamcheti, K., The Role of Screech Tones on Mixing of an Underexpanded Rectangular Jet (1986) Journal of Sound and Vibration, 106, pp. 119-143

[5]

Krothapalli, A., Buzyna, G., Lourenco, L., Streamwise Vortices in an Underexpanded Axisymmetric Jet (1991) Physics of Fluids, A3, p. 1848

[6]

Krothapalli, A., Strykowski, P.J., King, C.J., Origin of Streamwise Vortices in Supersonic Jets (1998) AIAA Journal, 36, p. 869

[7]

Lourenco, L.M., Krothapalli, A., Mesh-free, Second Order Accurate Algorithm for PIV (1998) Processing International Conference on Optical Technology and Image Processing in Fluid, Thermal and Combustion Flow, , Paper-AB079 Yokohama, Japan

[8]

Lourenco, L.M., Alkislar, M.B., Krothapalli, A., 3D PIV System for Wind Tunnel Applications (1999) 37th AIAA Aerospace Sciences Meeting and Exhibit, , AIAA 990273, Reno, NV

[9]

Powell, A., On the noise emanating from a two dimensional jet above the critical pressure (1953) Aeronautical Quarterly, 4, pp. 103-122

[10]

Ross, C., Lourenco, L., Krothapalli, A., PIV Measurements in a Shock-Containing Supersonic Flow (1994) 32nd Aerospace Sciences Meeting, , AIAA Paper 94-0047

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