Abstract

Electrohydrodynamic (EHD) induction pumping is based on charges induced in a dielectric liquid and delayed at a gradient or discontinuity of the electric conductivity. A traveling electric wave (AC) attracts or repels these induced charges, leading to liquid motion. EHD induction pumping of a dielectric micro condensation film, in an external horizontal configuration, is investigated experimentally. The pumping and its effect on heat transfer are explored by varying the voltage and frequency of the electric traveling wave, as well as the condensation heat flux. This study provides a fundamental understanding of induction pumping of micro liquid film and illustrates its potential for managing the flow and enhancing the heat transfer in the presence of phase change.

Issue Section:
Evaporation, Boiling, and Condensation
Keywords:
electrohydrodynamics, liquid films, condensation, pumps, dielectric liquids, Condensation, Enhancement, Film, Heat Transfer, Microscale, Phase Change
Topics:
Condensation, Condensed matter, Electrohydrodynamics, Electromagnetic induction, Flow (Dynamics), Heat flux, Heat transfer, Liquid films, Heat transfer coefficients, Heat, Pumps, Flux (Metallurgy), Dielectric liquids
1.
Melcher
,
J. R.
,
1966
, “
Traveling-Wave Induced Electro-convection
,”
Phys. Fluids
,
9
(
8
), pp.
1548
–
1555
.
2.
Melcher, J. R., 1981, Continuum Electromechanics, The MIT Press, Cambridge, MA, pp. 5.49–5.54.
3.
Melcher
,
J. R.
, and
Firebaugh
,
M. S.
,
1967
, “
Traveling-Wave Bulk Electroconvection Induced Across a Temperature Gradient
,”
Phys. Fluids
,
10
(
6
), pp.
1178
–
1185
.
4.
Wong
,
J.
, and
Melcher
,
J. R.
,
1969
, “
Thermally Induced Electroconvection
,”
Phys. Fluids
,
12
(
11
), pp.
2264
–
2269
.
5.
Kervin, D. J., Crowley, J. M., Krein, P., and Chato, J. C., 1981, “Parametric Studies of a Large Thermal EHD Induction Pump,” Conference Record, IEEE-Industry Applications Society Annual Meeting, IEEE, Piscatawy, NJ, pp. 1015–1020.
6.
Kuo
,
B. S.
,
Chato
,
J. C.
, and
Crowley
,
J. M.
,
1984
, “
Temperature Induced Electrohydrodynamic Pumping in Horizontal Pipes
,”
ASME J. Heat Transfer
,
106
, pp.
78
–
84
.
7.
Seyed-Yagoobi
,
J.
,
Chato
,
J. C.
,
Crowley
,
J. M.
, and
Krein
,
P. T.
,
1989
, “
Induction Electrohydrodynamic Pump in a Vertical Configuration, Part 1-Theory
,”
ASME J. Heat Transfer
,
111
, pp.
664
–
669
.
8.
Seyed-Yagoobi
,
J.
,
Chato
,
J. C.
,
Crowley
,
J. M.
, and
Krein
,
P. T.
,
1989
, “
Induction Electrohydrodynamic Pump in a Vertical Configuration, Part 2-Experimental Study
,”
ASME J. Heat Transfer
,
111
, pp.
670
–
674
.
9.
Margo
,
B. D.
, and
Seyed-Yagoobi
,
J.
,
1994
, “
Heat Transfer Enhancement Under Various Orientations Resulting From Attraction Mode Induction Electrohydrodynamic Pumping
,”
ASME J. Heat Transfer
,
116
, pp.
598
–
603
.
10.
Wawzyniak
,
M.
, and
Seyed-Yagoobi
,
J.
,
1997
, “
An Analytical Study of Electrohydrodynamic Induction Pumping of a Stratified Liquid/Vapor Medium
,”
IEEE Trans. Ind. Appl.
,
35
(
1
), pp.
231
–
239
.
11.
Wawzyniak
,
M.
,
Seyed-Yagoobi
,
J.
, and
Morrison
,
G. L.
,
2000
, “
An Experimental Study of Electrohydrodynamic Induction Pumping of a Stratified Liquid/Vapor Medium
,”
ASME J. Heat Transfer
,
122
, pp.
200
–
203
.
12.
Wawzyniak
,
M.
, and
Seyed-Yagoobi
,
J.
,
2001
, “
Electrohydrodynamic Induction Pumping of a Stratified Liquid/Vapor Medium in the Presence of Volumetric and Interface Electric Charges
,”
IEEE Trans. Ind. Appl.
,
37
(
4
), pp.
950
–
958
.
13.
Nusselt, W., 1916, “Die Oberfla¨chenkondensation des Wasserdampfes,” Zeitschrift des Vereines Deutsche Ingenieure, 60, pp. 541–546, 569–575.
14.
Seyed-Yagoobi
,
J.
, and
Bryan
,
J. E.
,
1999
, “
Enhancement of Heat Transfer and Mass Transport in Single-Phase and Two-Phase Flows with Electrohydrodynamics
,”
Adv. Heat Transfer
,
33
, pp.
95
–
186
.
15.
Da Silva, L. W., Molki, M., and Ohadi, M. M., 2000, “Electrohydrodynamic Enhancement of R-134a Condensation on Enhanced Tubes,” Conference Record of the 2000 IEEE Industry Applications Conference, 2, pp. 757–764.
16.
Brand, K., 2002, “Enhancement of External Condensation Heat Transfer with Electrohydrodynamic Induction Pumping—Theoretical and Experimental Study,” Ph.D. dissertation, Department of Mechanical Engineering, Texas A&M University, College Station, TX.
17.
Bohinsky, B. J., 1991, “An Experimental Study of Induction Electrohydrodynamic Pumping in a Horizontal Axisymmetric Configuration,” Master of Science thesis, Department of Mechanical Engineering, Texas A&M University, College Station, TX.
18.
Gnielinski
,
V.
,
1976
, “
New Equations for Heat and Mass Transfer in Turbulent Pipe and Channel Flow
,”
Int. Chem. Eng.
,
16
(
2
), pp.
359
–
368
.
19.
Pethukov
,
B. S.
,
1970
, “
Heat Transfer and Friction in Turbulent Pipe Flow with Variable Physical Properties
,”
Adv. Heat Transfer
,
6
, pp.
503
–
564
.
20.
Kline
,
S. J.
, and
McClintock
,
F. A.
,
1953
, “
Describing Uncertainties in Single Sample Experiments
,”
Mech. Eng. (Am. Soc. Mech. Eng.)
,
75
, pp.
3
–
8
.
21.
Moffat
,
R. J.
,
1988
, “
Describing the Uncertainties in Experimental Results
,” Exp. Therm. Fluid Sci., pp., 3–17.
22.
Brand, K., and Seyed-Yagoobi, J., 2000, “Electrohydrodynamic Induction Pumping of a Stratified Liquid/Vapor Medium in the Presence of Heat Transfer,” ASME International Mechanical Engineering Congress and Exposition, HTD-Vol. 366-4, ASME, New York, pp. 153–160.
23.
Brand
,
K.
, and
Seyed-Yagoobi
,
J.
,
2002
, “
Effect of Electrode Configuration on Electrohydrodynamic Induction Pumping of a Stratified Liquid/Vapor Medium
,”
IEEE Trans. Ind. Appl.
,
38
(
2
), pp.
389
–
400
.
24.
Crowley, J. M., 1983, “Stability of EHD Induction Pump,” in Conference Record of the IEEE-IAS Annual Meeting, Mexico City, Mexico, pp. 1149–1153.
25.
Wawzyniak
,
M.
, and
Seyed-Yagoobi
,
J.
,
1999
, “
Stability of Electrohydrodynamic Induction Pumping of a Stratified Liquid/Vapor Medium in the Presence of an External Load
,”
IEEE Trans. Ind. Appl.
,
35
, pp.
1211
–
1217
.
26.
Bryan, J. E. 1998, “Fundamental Study of Electro-hydrodynamically Enhanced Pool and Convective Boiling Heat Transfer,” Ph.D. dissertation, Department of Mechanical Engineering, Texas A&M University, College Station, TX.
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