NASA Logo, External Link
Facebook icon, External Link to NASA STI page on Facebook Twitter icon, External Link to NASA STI on Twitter YouTube icon, External Link to NASA STI Channel on YouTube RSS icon, External Link to New NASA STI RSS Feed AddThis share icon
 

Record Details

Record 82 of 14303
Enhancement of Pool Boiling Heat Transfer and Control of Bubble Motion in Microgravity Using Electric Fields - BCOEL
Author and Affiliation:
Herman, Cila(Johns Hopkins Univ., Dept. of Mechanical Engineering, Baltimore, MD, United States)
Iacona, Estelle(Johns Hopkins Univ., Dept. of Mechanical Engineering, Baltimore, MD, United States)
Acquaviva, Tom(NASA Glenn Research Center, Cleveland, OH, United States)
Coho, Bill(NASA Glenn Research Center, Cleveland, OH, United States)
Grant, Nechelle(NASA Glenn Research Center, Cleveland, OH, United States)
Nahra, Henry(NASA Glenn Research Center, Cleveland, OH, United States)
Sankaran, Subramanian(NASA Glenn Research Center, Cleveland, OH, United States)
Taylor, Al(NASA Glenn Research Center, Cleveland, OH, United States)
Julian, Ed(ZIN Technologies, Inc., Cleveland, OH, United States)
Robinson, Dale(ZIN Technologies, Inc., Cleveland, OH, United States) Show more authors
Abstract: The BCOEL project focuses on improving pool boiling heat transfer and bubble control in microgravity by exposing the fluid to electric fields. The electric fields induce a body force that can replace gravity in the low gravity environment, and enhance bubble removal from thc heated surface. A better understanding of microgravity effects on boiling with and without electric fields is critical to the proper design of the phase-change-heat-removal equipment for use in space-based applications. The microgravity experiments will focus on the visualization of bubble formation and shape during boiling. Heat fluxes on the boiling surface will be measured, and, together with the measured driving temperature differences, used to plot boiling curvcs for different electric field magnitudes. Bubble formation and boiling processes were found to be extremely sensitive to g-jitter. The duration of the experimental run is critical in order to achieve steady state in microgravity experiments. The International Space Station provides conditions suitable for such experiments. The experimental appararus to be used in the study is described in the paper. The apparatus will be tested in the KC-135 first, and microgravity experiments will be conducted on board of the International Space Station using the Microgravity Science Glovebox as the experimental platform.
Publication Date: Jan 01, 2001
Document ID:
20110001185
(Acquired Jan 13, 2011)
Subject Category: FLUID MECHANICS AND THERMODYNAMICS
Report/Patent Number: AIAA Paper 2001-5115
Document Type: Conference Paper
Meeting Sponsor: American Inst. of Aeronautics and Astronautics; United States
Contract/Grant/Task Num: NAG3-1815
Financial Sponsor: NASA Glenn Research Center; Cleveland, OH, United States
Organization Source: NASA Glenn Research Center; Cleveland, OH, United States
Description: 9p; In English; Original contains black and white illustrations
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: BOILING; BUBBLES; ELECTRIC FIELDS; MICROGRAVITY; SPACEBORNE EXPERIMENTS; HEAT TRANSFER; INTERNATIONAL SPACE STATION; ELECTROHYDRODYNAMICS; SENSITIVITY; STEADY STATE; WORKING FLUIDS; C-135 AIRCRAFT; GRAVITATIONAL EFFECTS
Availability Source: Other Sources
› Back to Top
Find Similar Records
NASA Logo, External Link
NASA Official: Gerald Steeman
Site Curator: STI Program
Last Modified: August 24, 2011
Contact Us