Theoretical, numerical, and experimental study of electrohydrodynamic pumping in vertical configuration
Abstract
An induction electrohydrodynamic (EHD) pump is studied theoretically, numerically, and experimentally. The pump which is in an axisymmetric, vertical configuration is investigated in both forward and backward modes. The theoretical model includes the effect of entrance conditions, buoyancy effects, and secondary flow. A complete set of numerical solutions is presented to show the influence of the controlling factors in operating an induction EHD pump. The experimental results seem to be in good agreement with the numerical solutions. Velocities four times higher than the natural circulation speed were readily achieved. Experimentally, the ion drag EHD pump is briefly studied. In the past, ion drag pumps were avoided because of expected degradation of the insulating ability of fluids such as transformer oils. The effects of long term low level charge injection on liquid dielectrics at levels sufficient to be useful in a pump is investigated. The results indicate that the exposure to electrodes at high voltage decreases the electric conductivity of the oils. Direct applications of the EHD pump include cooling both high-power underground cables and electric equipment such as transformers. This work is intended to provide the necessary information on the controlling factors of an EHD pump for a better design.
- Authors:
- Publication Date:
- Research Org.:
- Illinois Univ., Urbana (USA)
- OSTI Identifier:
- 5547855
- Resource Type:
- Thesis/Dissertation
- Resource Relation:
- Other Information: Thesis (Ph. D.)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 42 ENGINEERING; PUMPS; ELECTROHYDRODYNAMICS; DIELECTRIC MATERIALS; ELECTRIC CABLES; FARADAY INDUCTION; FEASIBILITY STUDIES; INSULATING OILS; NUMERICAL SOLUTION; PERFORMANCE TESTING; TRANSFORMERS; CABLES; CONDUCTOR DEVICES; ELECTRICAL EQUIPMENT; EQUIPMENT; FLUID MECHANICS; HYDRODYNAMICS; INDUCTION; MATERIALS; MECHANICS; OILS; ORGANIC COMPOUNDS; OTHER ORGANIC COMPOUNDS; TESTING; 640440* - Fluid Physics- Electrohydrodynamics; 420200 - Engineering- Facilities, Equipment, & Techniques
Citation Formats
Seyed-Yagoobi, S J.A. Theoretical, numerical, and experimental study of electrohydrodynamic pumping in vertical configuration. United States: N. p., 1984.
Web.
Seyed-Yagoobi, S J.A. Theoretical, numerical, and experimental study of electrohydrodynamic pumping in vertical configuration. United States.
Seyed-Yagoobi, S J.A. 1984.
"Theoretical, numerical, and experimental study of electrohydrodynamic pumping in vertical configuration". United States.
@article{osti_5547855,
title = {Theoretical, numerical, and experimental study of electrohydrodynamic pumping in vertical configuration},
author = {Seyed-Yagoobi, S J.A.},
abstractNote = {An induction electrohydrodynamic (EHD) pump is studied theoretically, numerically, and experimentally. The pump which is in an axisymmetric, vertical configuration is investigated in both forward and backward modes. The theoretical model includes the effect of entrance conditions, buoyancy effects, and secondary flow. A complete set of numerical solutions is presented to show the influence of the controlling factors in operating an induction EHD pump. The experimental results seem to be in good agreement with the numerical solutions. Velocities four times higher than the natural circulation speed were readily achieved. Experimentally, the ion drag EHD pump is briefly studied. In the past, ion drag pumps were avoided because of expected degradation of the insulating ability of fluids such as transformer oils. The effects of long term low level charge injection on liquid dielectrics at levels sufficient to be useful in a pump is investigated. The results indicate that the exposure to electrodes at high voltage decreases the electric conductivity of the oils. Direct applications of the EHD pump include cooling both high-power underground cables and electric equipment such as transformers. This work is intended to provide the necessary information on the controlling factors of an EHD pump for a better design.},
doi = {},
url = {https://www.osti.gov/biblio/5547855},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 1984},
month = {Sun Jan 01 00:00:00 EST 1984}
}