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TECHNICAL NOTES

Predicting the Influence of Compressibility and Thermal and Flow Distribution Asymmetry on the Frequency-Response Characteristics of Multitube Two-Phase Condensing Flow Systems

[+] Author and Article Information
C. J. Kobus

Oakland University, Rochester, MI 48309 cjkobus@oakland.edu

G. L. Wedekind

Oakland University, Rochester, MI 48309 wedekind@oakland.edu

B. L. Bhatt

Oakland University, Rochester, MI 48309 bhatt@oakland.edu

J. Heat Transfer 122(1), 196-200 (Aug 23, 1999) (5 pages) doi:10.1115/1.521457 History: Received August 25, 1998; Revised August 23, 1999
Copyright © 2000 by ASME
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References

Kobus,  C. J., Wedekind,  G. L., and Bhatt,  B. L., 1998, “Application of an Equivalent Single-Tube Model for Predicting Frequency-Response Characteristics of Multitube Two-Phase Condensing Flow Systems With Thermal and Flow Distribution Asymmetry,” ASME J. Heat Transfer, 120, No. 2, pp. 528–530.
Wedekind,  G. L., Kobus,  C. J., and Bhatt,  B. L., 1997, “Modeling the Characteristics of Thermally Governed Transient Flow Surges in Multitube Two-Phase Condensing Flow Systems With Compressibility and Thermal and Flow Distribution Asymmetry,” ASME J. Heat Transfer, 119, No. 3, pp. 534–543.
Bhatt,  B. L., and Wedekind,  G. L., 1980, “Transient and Frequency Response Characteristics of Two-Phase Condensing Flows: With and Without Compressibility.” ASME J. Heat Transfer, 102, pp. 495–500.
Zivi,  S. M., 1964, “Estimation of Steady-State Steam Void Fraction by Means of the Principle of Minimum Entropy Production,” ASME J. Heat Transfer, 86, p. 247.
Kobus, C. J., 1998, “Application of the System Mean Void Fraction Model in Formulating an Equivalent Single-Tube Model for Predicting Various Transient and Unstable Flow Phenomena Associated with Horizontal Multitube Two-Phase Condensing Flow Systems With and Without the Effects of Compressibility, Inertia, and Thermal and Flow Distribution Asymmetry,” Ph.D. thesis,Oakland University, Rochester, MI.

Figures

Grahic Jump Location
Strip chart record of measured outlet liquid and inlet vapor flowrates for an oscillatory inlet vapor flowrate
Grahic Jump Location
Influence of compressibility on frequency-response characteristics of outlet liquid flowrate relative to inlet vapor flowrate for a two-tube condensing flow system; comparison of experimental data with equivalent single-tube model (equivalent single-tube model)
Grahic Jump Location
Influence of thermal and flow distribution asymmetry on frequency-response characteristics of outlet liquid flowrate relative to inlet vapor flowrate for a two-tube condensing flow system; comparison of experimental data with predictions of equivalent single-tube model (equivalent single-tube model)

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