Single phase liquid immersion cooling of discrete heat sources in a vertical channel.
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Authors
Hazard, Sherrill John III.
Subjects
immersion cooling
protruding heat sources
vertical channel
flow visualization
protruding heat sources
vertical channel
flow visualization
Advisors
Joshi, Yogendra
Date of Issue
1987-12
Date
December 1987
Publisher
Language
en_US
Abstract
Natural convection liquid cooling of simulated
electronic components was investigated. A single column of
eight protruding components was constructed using foil
heaters mounted on the back of stainless steel rectangular
blocks. These components were attached to a vertical
plexiglas wall to simulate a column of 20 pin DIP'S. A
channel was formed by placing a smooth movable shrouding
wall parallel to the test surface. The test surface and the
shrouding wall were placed in a water immersion bath. Flow
visualization was accomplished using a laser generated plane
of light to illuminate suspended particles. Photographs
were taken of the flow at the test surface mid-plane for
four different power settings at each of three different
channel widths. A nondimensional temperature and a modified
Grashof number for each heated protrusion at each input
power setting and channel width were determined. Visual
results indicate two distinct flow regions. Far away from
the components, a natural convection boundary layer flow was
observed. Near the components, the flow was modified by the
protrusions. As the component heat input increased, more
pronounced three dimensional effects were noticed.
Temperature measurements indicate that as the modified
Grashof numbers increased, the nondimensional temperatures decreased for each component. Also, the difference in the
nondimensional temperatures for various components decreased
with increasing modified Grashof numbers.
Type
Thesis
Description
Series/Report No
Department
Mechanical Engineering
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funder
Format
143 p.
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.