A study was carried out to evaluate behavior and performance of vortex triodes. In particular, the study investigated the geometries and operating conditions which minimize the control flow capable of intercepting the supply flow. The study was conducted experimentally using a specially designed test bench on prototypes operating with water. The geometric parameters which influence vortex valve performance were identified and varied so as to minimize the ratio between control and supply flows. The paper presents a semi-empirical formula to predict vortex valve performance. In particular, the formula takes valve outlet geometry and the shape of outlet diffusers into account.

References

References
1.
Wormley
,
D. N.
, and
Richardson
,
H. H.
,
1970
, “
A Design Basis for Vortex-Type Fluid Amplifiers Operating in the Incompressible Flow Regime
,”
ASME J. Basic Eng.
,
92
(
2
), pp.
369
376
.
2.
Syred
,
N.
, and
Royle
,
J. K.
,
1972
, “
Operating Characteristics of High Performance Vortex Amplifiers
,”
Fluid. Q.
,
4
(
1
), pp.
1
18
.
3.
MacGregor
,
S. A.
, and
Syred
,
N.
,
1982
, “
Effect of Outlet Diffusers on Vortex Amplifier Characteristics
,”
Fluid. Q.
,
14
, pp.
1
11
.
4.
Frith
,
P. C. W.
, and
Duggins
,
R. K.
,
1986
, “
Flow Modulation in Turbulent Vortex Chambers
,”
9th Australasian Fluid Mechanics Conference
, Auckland, New Zealand, pp.
338
341
.
5.
Tippets
,
J. R.
, and
Priestman
,
G. H.
,
1988
, “
Detail and Strategy in Fluidic Developments for the Nuclear Industry
,”
2nd Conference on Fluid Control, Measurement, Mechanics and Flow Visualization
, Sheffield, UK, pp.
124
128
.
6.
Tippets
,
J. R.
,
1997
, “
Multi-Switched Vortex Valves
,”
5th Conference on Fluid Control, Measurement and Visualisation
, T. Kobayashi, ed., Hayama, Japan, Vol.
2
, pp.
523
528
.
7.
Tippets
,
J. R.
, and
Priestman
,
G. H.
,
2003
, “
Water Displays Using Fluidic Vortex Valves
,”
7th Conference on Fluid Control, Measurement and Visualisation
, G. M. Carlomagno and I. Grant eds., Sorrento, Italy, pp.
1
12
.
8.
Woolhouse
,
R. J.
,
Tippets
,
J. R.
, and
Beck
,
S. B. M.
,
2001
, “
A Comparison of the Experimental and Computational Modelling of the Fluidic Turn-Up Vortex Amplifier at Full and Zero Swirl Conditions
,”
Proc. Inst. Mech. Eng., Part C
,
215
(
8
), pp.
893
903
.
9.
Birch
,
M. J.
,
Doig
,
R.
,
Francis
,
J.
,
Parker
,
D.
, and
Zhang
,
G.
,
2009
, “
A Review of Vortex Amplifier Design in the Context of Sellafield Nuclear Operations
,”
ASME
Paper No. ICEM2009-16063.
10.
Parker
,
D.
,
Birch
,
M. J.
, and
Francis
,
J.
,
2011
, “
Computational Fluid Dynamic Studies of Vortex Amplifier Design for the Nuclear Industry—I. Steady-State Conditions
,”
ASME J. Fluids Eng.
,
133
(
4
), p.
041103
.
11.
Francis
,
J.
,
Birch
,
M. J.
, and
Parker
,
D.
,
2012
, “
Computational Fluid Dynamic Studies of Vortex Amplifier Design for the Nuclear Industry—II. Transient Conditions
,”
ASME J. Fluids Eng.
,
134
(
2
), p.
021103
.
12.
Francis
,
J.
,
Parker
,
D.
,
Whitty
,
J.
, and
Zhang
,
G.
,
2014
, “
Control Port Influence on Swirl, Operating, and Flow Characteristics of a Mini-Vortex Amplifier on Glove Box Service
,”
ASME J. Fluids Eng.
,
136
(
12
), p.
121104
.
13.
Letham
,
D. L.
,
1966
, “
Fluidic System Design—Vortex Amplifiers
,”
Mach. Des.
, pp.
178
181
.
14.
Belforte
,
G.
,
Manuello Bertetto
,
A.
, and
Mazza
,
L.
,
1994
, “
Analysis of Vortex Valves for Minimizing Control Flow
,”
4th Conference on Fluid Control, Measurement and Visualisation
, Toulouse, France, pp.
757
762
.
15.
Hondur
,
Y. T.
, and
Rezek
,
C. W.
,
1974
, “
Hydraulic Vortex Valve Modelling and Design
,”
ASME
Paper No. 74-WA/AUT.
16.
King
,
C. F.
,
1985
, “
Vortex Amplifier Internal Geometry and Its Effect on Performance
,”
J. Heat Fluid Flow
,
6
(
3
), pp.
160
170
.
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