You are here

UCF Digital Collections ยป ETD Collection

Heat and fluid flow characterization of a single-hole-per-row impingement channel at multiple impingement heights

Download pdf | Full Screen View

Date Issued:
2013
Abstract/Description:
The present work studies the relationship between target and sidewall surfaces of a multi-row, narrow impingement channel at various jet heights with one impingement hole per row. Temperature sensitive paint and constant flux heaters are used to gather heat transfer data on the target and side walls. Jet-to-target distance is set to 1, 2, 3, 5, 7 and 9 jet diameters. The channel width is 4 jet diameters and the jet stream wise spacing is 5 jet diameters. All cases were run at Reynolds numbers ranging from 5,000 to 30,000. Pressure data is also gathered and used to calculate the channel mass flux profiles, used to better understand the flow characteristics of the impingement channel. While target plate heat transfer profiles have been thoroughly studied in the literature, side wall data has only recently begun to be studied. The present work shows the significant impact the side walls provide to the overall heat transfer capabilities of the impingement channel. It was shown that the side walls provide a significant amount of heat transfer to the channel. A channel height of three diameters was found to be the optimum height in order to achieve the largest heat transfer rates out of all channels.
Title: Heat and fluid flow characterization of a single-hole-per-row impingement channel at multiple impingement heights.
24 views
13 downloads
Name(s): Claretti, Roberto, Author
Kapat, Jayanta, Committee Chair
Kassab, Alain, Committee Member
Raghavan, Seetha, Committee Member
Vasu Sumathi, Subith, Committee Member
, Committee Member
University of Central Florida, Degree Grantor
Type of Resource: text
Date Issued: 2013
Publisher: University of Central Florida
Language(s): English
Abstract/Description: The present work studies the relationship between target and sidewall surfaces of a multi-row, narrow impingement channel at various jet heights with one impingement hole per row. Temperature sensitive paint and constant flux heaters are used to gather heat transfer data on the target and side walls. Jet-to-target distance is set to 1, 2, 3, 5, 7 and 9 jet diameters. The channel width is 4 jet diameters and the jet stream wise spacing is 5 jet diameters. All cases were run at Reynolds numbers ranging from 5,000 to 30,000. Pressure data is also gathered and used to calculate the channel mass flux profiles, used to better understand the flow characteristics of the impingement channel. While target plate heat transfer profiles have been thoroughly studied in the literature, side wall data has only recently begun to be studied. The present work shows the significant impact the side walls provide to the overall heat transfer capabilities of the impingement channel. It was shown that the side walls provide a significant amount of heat transfer to the channel. A channel height of three diameters was found to be the optimum height in order to achieve the largest heat transfer rates out of all channels.
Identifier: CFE0004985 (IID), ucf:49592 (fedora)
Note(s): 2013-12-01
M.S.M.E.
Engineering and Computer Science, Mechanical and Aerospace Engineering
Masters
This record was generated from author submitted information.
Subject(s): Impingement -- Nusselt Number -- Side Wall Heat Transfer -- Near Wall Cooling -- Impingement Channel -- Single Row Impingement Channel -- Kapat -- Claretti -- Ricklick
Persistent Link to This Record: http://purl.flvc.org/ucf/fd/CFE0004985
Restrictions on Access: campus 2016-12-15
Host Institution: UCF

In Collections