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TECHNICAL PAPERS

Improvement of the Performance of a Supersonic Nozzle by Riblets

[+] Author and Article Information
Kazumi Tsunoda

Department of Mechanical Engineering, Shibaura Institute of Technology, Tokyo, 108-8548, Japane-mail: ktsunoda@sic.shibaura-it.ac.jp

Tomohiko Suzuki

Namiki Precision Jewel Co., Ltd. Tokyo, 123-8511, Japan

Toshiaki Asai

Department of Mechanical Engineering, Shibaura Institute of Technology, Tokyo, 108-8548, Japan

J. Fluids Eng 122(3), 585-591 (May 02, 2000) (7 pages) doi:10.1115/1.1286991 History: Received August 24, 1999; Revised May 02, 2000
Copyright © 2000 by ASME
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References

Figures

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Streamwise velocity profile in law of the wall coordinate (uncertainty in u+=±0.4 and in y+=±3.2)
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Reduction ratio in stagnation pressure loss as a function of Mach number
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Streamwise variation of stagnation pressure, defined as the integral mean over the channel height, for various operating pressure ratios
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Contour plots of stagnation pressure for the operating pressure ratio of Pb/P0S=0.4 (uncertainties: refer to the caption of Fig. 9)
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Contour plots of stagnation pressure for the operating pressure ratio of Pb/P0S=0.1 (uncertainty in P0/P0S=±0.0066 for Channel A, in P0/P0S=±0.0097 for Channel B and in P0/P0S=±0.0068 for the smooth channel)
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Development of Mach number profile along the x-direction for Channel B and the smooth channel (uncertainty in M=±0.08 for Channel B and in M=±0.07 for the smooth channel)
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Development of Mach number profile along the x-direction for Channel A and the smooth channel (uncertainty in M=±0.09 for Channel A and in M=±0.07 for the smooth channel)
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Uncertainties of wall static pressure measurement. Error bars extend uncertainty interval at 95 percent coverage.
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Wall static pressure distributions along the x-direction for various operating pressure ratios
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Nondimensionalized streamwise velocity profiles in boundary layer (uncertainty in u/U0=±0.019 and in y/δ=±0.0015)
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Cross-sectional view of the riblet surface with principal dimension
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Schematic cross-sectional view of the converging/diverging (CD) nozzle and coordinate system
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Experimental apparatus and schematic diagram of measurement system

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