This paper presents the results of a series of experiments to study the influence of diameter on the loading of a single rigid cylinder subjected to air-water cross-flow. Five rigid cylinders of same length and different diameters ( to ) were tested over void fractions ranging from 10% to 80%. The fluctuating lift forces on the cylinder are measured and represented in the form of power spectral density. A scaling model of these forces previously developed from one series of experiments with one tube diameter is tested on these new results by investigating the effect of tube diameter . Unlike single phase results where the force spectra vary as , it is shown that for two-phase flows, the force spectra vary as . The experimental data collapse remarkably well. Both local void fraction and flow regime appear to be sensitive parameters. It confirms the importance of a precise knowledge of the local characteristics of two-phase flows in the study of buffeting forces mechanisms.
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e-mail: sylviane.pascal@cea.fr
e-mail: yves.blanchet@cea.fr
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April 2011
Research Papers
An Improved Scaling Model of Buffeting Lift Forces in Air-Water Flows
Sylviane Pascal-Ribot,
e-mail: sylviane.pascal@cea.fr
Sylviane Pascal-Ribot
CEA, DEN, DER/SSTH/LDAL
, Cadarache, F-13108 Saint-Paul-lez-Durance, France
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Yves Blanchet
e-mail: yves.blanchet@cea.fr
Yves Blanchet
CEA, DEN, DER/SSTH/LDAL
, Cadarache, F-13108 Saint-Paul-lez-Durance, France
Search for other works by this author on:
Sylviane Pascal-Ribot
CEA, DEN, DER/SSTH/LDAL
, Cadarache, F-13108 Saint-Paul-lez-Durance, Francee-mail: sylviane.pascal@cea.fr
Yves Blanchet
CEA, DEN, DER/SSTH/LDAL
, Cadarache, F-13108 Saint-Paul-lez-Durance, Francee-mail: yves.blanchet@cea.fr
J. Pressure Vessel Technol. Apr 2011, 133(2): 021301 (7 pages)
Published Online: February 9, 2011
Article history
Received:
September 20, 2007
Revised:
August 21, 2009
Online:
February 9, 2011
Published:
February 9, 2011
Citation
Pascal-Ribot, S., and Blanchet, Y. (February 9, 2011). "An Improved Scaling Model of Buffeting Lift Forces in Air-Water Flows." ASME. J. Pressure Vessel Technol. April 2011; 133(2): 021301. https://doi.org/10.1115/1.4002803
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