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Conjugate heat transfer from a heated disk to a thin liquid film formed by a controlled impinging jetAn experimental and numerical study of the heat transfer from a heated horizontal disk to a thin film of liquid is described. The liquid was delivered to the disk by a collar arrangement such that the film thickness and radial velocity were known at the outer radius of the collar. This method of delivery is termed as a controlled impinging jet. Flow visualization tests were performed and heat transfer data were collected along the radius of the disk for different volumetric flow rates and inlet temperatures in the supercritical and subcritical regions. The heat transfer coefficient was found to increase with flow rate when both supercritical and subcritical regions were present on the heated surface. A numerical simulation of this free surface problem was performed, which included the effects of conjugate heat transfer within the heated disk and the liquid. The numerical predictions agree with the experimental results and show that conjugate heat transfer has a significant effect on the local wail temperature and heat transfer coefficient.
Document ID
19930046124
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Faghri, A.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Thomas, S.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Rahman, M. M.
(Wright State Univ. Dayton, OH, United States)
Date Acquired
August 16, 2013
Publication Date
February 1, 1993
Publication Information
Publication: ASME, Transactions, Journal of Heat Transfer
Volume: 115
Issue: 1
ISSN: 0022-1481
Subject Category
Fluid Mechanics And Heat Transfer
Accession Number
93A30121
Funding Number(s)
CONTRACT_GRANT: NAG5-956
Distribution Limits
Public
Copyright
Other

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