Visualization of a highly submerged cavitating water jet was done by high-speed camera photography in order to study and understand the jet structure and the behavior of cloud cavitation within time and space. The influencing parameters, such as injection pressure, nozzle diameter and geometry, and nozzle direction (convergent and divergent), were experimentally proven to be very significant. Periodical shedding and discharging of cavitation clouds have been also analyzed and the corresponding frequency was determined by cloud shape analysis. Additionally, the dependence of this frequency on injection pressure and nozzle geometry has been analyzed and a simple formula of correspondence has been proposed. The formula has been tested on self-measured and literature data. The recordings of sonoluminescence phenomenon proved the bubble collapse everywhere along the jet.

Issue Section:
Multiphase Flows
Keywords:
cavitation, flow visualisation, jets, nozzles, cavitating jet, cavitation cloud, shedding and discharging frequency, vapor cavity, cavitation number
Topics:
Cavitation, Nozzles, Visualization, Pressure
1.
Soyama
,
H.
,
Yamauchi
,
Y.
,
Adachi
,
Y.
,
Adachi
,
Y.
, and
Oba
,
R.
, 1994, “
High-Speed Cavitation-Cloud Observations Around High-Speed Submerged Water Jets
,”
Second International Symposium on Cavitation
,
Tokyo Japan
, pp.
225
–
230
.
2.
Vijay
,
M. M.
,
Zou
,
C.
, and
Tavoularis
,
S.
, 1991, “
A Study of The Characteristics of Cavitating Water Jets by Photography And Erosion
,”
Jet Cutting Technology—Proceedings of Tenth International Conference
,
Elsevier Science
, pp.
37
–
67
.
3.
Soyama
,
H.
,
Adachi
,
Y.
,
Yamauchi
,
Y.
, and
Oba
,
R.
, 1994, “
Cavitation-Noise-Characteristics Around High Speed Submerged-Water-Jets
,”
JSME Int. J., Ser. B
1340-8054,
60
(
517
), pp.
730
–
735
.
4.
Conn
,
A. F.
,
Johnson
,
V. E.
,
Lindenmuth
,
W. T.
, Jr., and
Fredrick
,
G. S.
, 1981, “
Some Industrial Applications of Cavitating Fluid Jets Flow
,”
Proceedings of the First U.S. Water Jet Conference
Golden, Colorado
,
www.wjta.org/Book%201/5_2a_Conn,_JohnsonLindenmu.pdfwww.wjta.org/Book%201/5_2a_Conn,_JohnsonLindenmu.pdf.
5.
Yamaguchi
,
A.
, and
Shimizu
,
S.
, 1987, “
Erosion Due to Impingement of Cavitating Jet
,”
ASME Trans. J. Fluids Eng.
0098-2202,
109
, pp.
442
–
447
.
Crossref
Search ADS
 
6.
Soyama
,
H.
,
Yamauchi
,
Y.
,
Adachi
,
Y.
,
Adachi
,
Y.
, and
Oba
,
R.
, 1995, “
High-Speed Cavitation-Cloud Observations Around High-Speed Submerged Water Jets
,”
JSME Int. J., Ser. B
1340-8054,
38
(
2
), pp.
245
–
251
.
Crossref
Search ADS
 
7.
Ito
,
Y.
,
Ogata
,
H.
,
Oba
,
R.
, and
Ikeda
,
R.
, 1988, “
Stereo-Observation of Cavitation Bubbles on A Clark-Y 11.7% Hydrofoil
,”
Trans. ASME, Ser. B
0022-0817,
54
(
500
), pp.
763
–
769
.
8.
Soyama
,
H.
,
Ikohagi
,
T.
, and
Oba
,
R.
, 1994, “
Observation of the Cavitating Jet in a Narrow Watercourse
,”
Proceedings of the 29th Cavitation and Multiphase Flow Forum
,
O.
Furuya
 and
J.
Katz
, eds., ASME-FED-194, pp.
79
–
82
.
9.
Caron
,
J. F.
,
Farhat
,
M.
, and
Avellan
,
F.
, 1995, “
Physical Investigation of the Cavitation Phenomenon
,”
Proceedings of the 6th International Symposium on Fluid Control, Measurement and Visualization
(Flucome, 2000), August 13–17, Sherbrooke, Canada.
10.
Koivula
,
T.
, 2000, “
On Cavitation in Fluid Power
,”
Proceedings of First FPNI-PhD Symposium
,
Hamburg, Germany
, pp.
371
–
382
.
11.
Oba
,
R.
, 1994, “
The Sever Cavitation Erosion
,”
Second International Symposium on Cavitation
,
Tokyo Japan
, pp.
1
–
8
.
12.
Clanet
,
C.
, and
Lasheras
,
J. C.
, 1997, “
Depth Penetration of Bubbles Entrained by a Plunging Water Jet
,”
Phys. Fluids
1070-6631
9
(
7
), pp.
1864
–
1866
.
Crossref
Search ADS
 
13.
Soyama
,
H.
,
Lichtarowicz
,
A.
, and
Lampard
,
D.
, 1998, “
Useful Correlations for Cavitating Jets
,”
3rd International Symposium on Cavitation
,
Grenoble, France
, pp.
17
–
24
.
14.
Ganippa
,
L. C.
,
Bark
,
G.
,
Andersson
,
S.
, and
Chomiak
,
J.
, 2001, “
Comparison Of Cavitation Phenomena In Transparent Scaled-Up Single-Hole Diesel Nozzles
,” CAV2001, Session A9.005, California, (http://cav.2001.library.calteh.edu/http://cav.2001.library.calteh.edu/).
15.
Soyama
,
H.
, 2005, “
High-Speed Observation of a Cavitating Jet in Air
,”
ASME Trans. J. Fluids Eng.
0098-2202,
127
, pp.
1095
–
1101
.
Crossref
Search ADS
 
16.
Keiichi
,
S.
, and
Yasuhiro
,
S.
, 2002, “
Unstable Caviitation Behavior in a Circular-Cylindrical Orifice Flow
,”
JSME Int. J., Ser. B
1340-8054,
45
(
3
), pp.
638
–
645
.
17.
Yamauchi
,
Y.
,
Kawano
,
S.
,
Soyama
,
H.
,
Sato
,
K.
,
Matsudaira
,
Y.
,
Ikohagi
,
T.
, and
Oba
,
R.
, 1996, “
Formation of Process of Vortex Ring Cavitation in High-Speed Submerged Water Jet
,”
JSME Int. J., Ser. B
1340-8054,
62
(
593
), pp.
72
–
78
.
Copyright © 2008
 by American Society of Mechanical Engineers
You do not currently have access to this content.