0
TECHNICAL PAPERS

An Experimental Study of Unsteady Partial Cavitation

[+] Author and Article Information
Jean-Baptiste Leroux, Jacques André Astolfi, Jean Yves Billard

Ecole Navale/IRENAV, Institute de Recherche de l’Ecole Navale, BP 600, 29240 Brest-Armee, France

J. Fluids Eng 126(1), 94-101 (Feb 19, 2004) (8 pages) doi:10.1115/1.1627835 History: Received November 21, 2002; Revised June 30, 2003; Online February 19, 2004
Copyright © 2004 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
(a) Transducer mounting. (b) Location and nomenclature of the pressure transducers, filled symbol is on the pressure side. Units in millimeter.
Grahic Jump Location
Example of pressure transducer calibration curve
Grahic Jump Location
Aspect of the cavity. Flow is from the left.
Grahic Jump Location
(a) (b) Measured lift and drag coefficient for the non cavitating flow, straight line on (a) is the theoretical value CL=0.1097(1−0.83τ)(α+2.35) (inviscid unbounded calculation with viscous corrections, 18). (c) Lift to drag ratio for various cavity lengths, labels are the mean relative cavity lengths (see also Table 2).
Grahic Jump Location
Pressure coefficient for the noncavitating flow, α=6.5 deg
Grahic Jump Location
Pressure coefficient for various cavity lengths, (a) (b) (c) stable cavity, (d) unstable cavity (l/c>0.5). Vertical bars are ±Prms/q.
Grahic Jump Location
Pressure fluctuation intensity for various cavity lengths
Grahic Jump Location
Power spectral density, dashed line is the noncavitating flow, σ=1.34, l/c∼0.4
Grahic Jump Location
Photographs of partial cavitation during cavity growth/destabilization cycle. Time between two consecutive images is 1/25e s.
Grahic Jump Location
Instantaneous pressure signals during cavity growth/destabilization cycle, σ=1.25, C11 is the instantaneous pressure signals on the pressure side
Grahic Jump Location
Spatial-time history of wall pressure in the cavity wake during cavity growth and vapor cloud shedding, σ=1.25. Figures on the left (resp. right) depict the sequence (a) (resp. (b)) on Fig. 10, filled symbol is transverse transducer C82.
Grahic Jump Location
Spatial-time history of wall pressure during cavity destabilization and cloud cavitation (label (c) on Fig. 10), σ=1.25, dashed line is the noncavitating flow, filled symbols are transverse transducers C62 and C82
Grahic Jump Location
Limit for which stable cavity transits to unstable cavity in the plane (σ,2(α−αo)). The dashed straight line is Arndt et al.’s criteria given by σ/2(α−αo)=4 (with αo=0). Angles are in radians.
Grahic Jump Location
Variation of the angle of attack equivalent to the variation of the pressure on the pressure side during the growth/destabilization cycle, σ=1.25

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In