Data from two experimental programs have been analyzed to determine the characteristics of the random excitation forces associated with two-phase cross-flow in tube bundles. Large-scale air-water flow loops in France and Canada were used to generate the data. Tests were carried out on cantilevered, clamped-pinned, and clamped-clamped tubes in normal-square, parallel-triangular, and normal-triangular configurations. Either strain gages or force transducers were used to measure the vibration response of a centrally located tube as the tube array was subjected to a wide range of void fractions and flow rates. Power spectra were analyzed to determine the effect of parameters such as tube diameter, frequency, flow rate, void fraction, and flow regime on the random excitation forces. Normalized expressions for the excitation force power spectra were found to be flow-regime dependent. In the churn flow regime, flow rate and void fraction had very little effect on the magnitude of the excitation forces. In the bubble-plug flow regime, the excitation forces increased rapidly with flow rate and void fraction.
Issue Section:
Research Papers
1.
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2.
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3.
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4.
Axisa, F. and Villard, B., 1992, “Random Excitation of Heat Exchanger Tubes by Two-Phase Cross-Flows,” ASME-WAM International Symposium on Flow-Induced Vibration and Noise, Vol. 1, pp. 119–139.
5.
Axisa, F., Antunes, J., Villard, B., and Wullschleger, M., 1988, “Random Excitation of Heat Exchanger Tubes by Cross-Flow,” ASME-WAM International Symposium on Flow-Induced Vibration and Noise, Vol. 2, pp. 23–46.
6.
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.7.
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8.
Gay, N., Decembre, P., and Launay, J., 1988, “Comparison of Air-Water to Water-Freon Two-Phase Cross-Flow Effects on the Vibratory Behavior of a Tube Bundle,” ASME-WAM 1988 International Symposium on Flow-Induced Vibration and Noise, Vol. 3, pp. 139–158.
9.
Goyder, H. G. D., 1987, “Two-Phase Buffeting of Heat Exchanger Tubes,” Paper No. E2, Proceedings of the International Conference on Flow-Induced Vibrations, Bowness-on-Windermere, England.
10.
Goyder, H. G. D., 1988, “Fluidelastic Instability and Buffeting of Heat Exchanger Tube Bundles due to Single and Two-Phase Flows,” ASME-WAM International Symposium on Flow-Induced Vibration and Noise, Vol. 2, pp. 151–168.
11.
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F.
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13.
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F.
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.14.
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15.
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,” ASME Journal of Engineering for Power
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.16.
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17.
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.20.
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23.
Pettigrew, M. J., and Gorman, D. J., 1978, “Vibration of Heat Exchange Components in Liquid and Two-Phase Cross-Flow,” Proceedings of the BNES International Conference on Vibration in Nuclear Plant, Keswick, U.K., Paper No. 2.3, (also, AECL-6184).
24.
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,” ASME JOURNAL OF PRESSURE VESSEL TECHNOLOGY
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.25.
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26.
Taylor, C. E., 1994, “Random Excitation Forces in Tube Arrays Subjected to Water and Air-Water Cross Flow,” Ph.D. thesis, University of Toronto, Toronto, Canada.
27.
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,” ASME JOURNAL OF PRESSURE VESSEL TECHNOLOGY
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.29.
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