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TECHNICAL PAPERS

Discharge Coefficients of Critical Venturi Nozzles for CO2 and SF6

[+] Author and Article Information
Shin-ichi Nakao, Masaki Takamoto

Flow Measurement Section, National Research Laboratory of Metrology, 1-4, Umezono-1, Tsukuba, Ibaraki, Japan

J. Fluids Eng 122(4), 730-734 (Aug 17, 2000) (5 pages) doi:10.1115/1.1319500 History: Received January 10, 2000; Revised August 17, 2000
Copyright © 2000 by ASME
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References

Figures

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Schematic diagram of the ISO type toroidal throat Venturi nozzle and their throat diameters
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The variations of the discharge coefficients versus the theoretical Reynolds number (×: from Nakao et al. 6)
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The linear relation between the discharge coefficient and the inverse of the square root of the theoretical Reynolds number
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The variation of “a” with specific heat ratio (×: from Nakao et al. 6)
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The variation of “b” with specific heat ratio (×: from Nakao et al. 6)
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The discharge coefficients of the four nozzles for CO2 versus the inverse of the square root of the theoretical Reynolds number
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The variation of “a” versus the throat diameter for CO2
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The comparison of the measured discharge coefficients and the theoretical discharge coefficients with γ=1.38 under a nonequilibrium flow condition for CO2
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The discharge coefficients of the four nozzles for SF6 versus the inverse of the square root of the theoretical Reynolds number
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The variation of “a” versus the throat diameter for SF6

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