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Experimental Study of Convection Heat Transfer in the Entrance Region of a Rectangular Duct with Transverse Ribs

Ghorbani-Tari, Zahra LU ; Sundén, Bengt LU and Tanda, Giovanni (2012) ASME Summer Heat Transfer Conference (SHTC), 2012 In Proceedings of the ASME Summer Heat Transfer Conference, 2012, Vol 1 p.769-777
Abstract
The paper presents an experimental study on heat transfer coefficients in a straight rectangular channel containing continuous transverse ribs. The ribs were located on one side of the channel which is heated with a uniform heat flux. Three values of the rib pitch-to-height ratio (10, 20 and 30) were considered, with the Reynolds number, based on the channel hydraulic diameter, ranging from 57,000 to 127,000. The studied geometry is relevant for hot internal structures in aircraft engines. The steady state, liquid crystal thermography technique was used to obtain detailed heat transfer coefficients in the inter-rib surface regions. The main purpose of this study was to investigate the heat transfer behavior between the first repeated ribs,... (More)
The paper presents an experimental study on heat transfer coefficients in a straight rectangular channel containing continuous transverse ribs. The ribs were located on one side of the channel which is heated with a uniform heat flux. Three values of the rib pitch-to-height ratio (10, 20 and 30) were considered, with the Reynolds number, based on the channel hydraulic diameter, ranging from 57,000 to 127,000. The studied geometry is relevant for hot internal structures in aircraft engines. The steady state, liquid crystal thermography technique was used to obtain detailed heat transfer coefficients in the inter-rib surface regions. The main purpose of this study was to investigate the heat transfer behavior between the first repeated ribs, i.e., in the regions where the flow and thermal fields are not yet periodically fully developed. (Less)
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author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
in
Proceedings of the ASME Summer Heat Transfer Conference, 2012, Vol 1
pages
769 - 777
publisher
Amer. Soc. Mechanical Engineers
conference name
ASME Summer Heat Transfer Conference (SHTC), 2012
external identifiers
  • WOS:000324956600089
  • Scopus:84892643661
language
English
LU publication?
yes
id
0996a5b8-3040-40fa-9919-7f3378b20004 (old id 4171684)
date added to LUP
2013-11-26 15:26:56
date last changed
2016-10-13 04:49:58
@misc{0996a5b8-3040-40fa-9919-7f3378b20004,
  abstract     = {The paper presents an experimental study on heat transfer coefficients in a straight rectangular channel containing continuous transverse ribs. The ribs were located on one side of the channel which is heated with a uniform heat flux. Three values of the rib pitch-to-height ratio (10, 20 and 30) were considered, with the Reynolds number, based on the channel hydraulic diameter, ranging from 57,000 to 127,000. The studied geometry is relevant for hot internal structures in aircraft engines. The steady state, liquid crystal thermography technique was used to obtain detailed heat transfer coefficients in the inter-rib surface regions. The main purpose of this study was to investigate the heat transfer behavior between the first repeated ribs, i.e., in the regions where the flow and thermal fields are not yet periodically fully developed.},
  author       = {Ghorbani-Tari, Zahra and Sundén, Bengt and Tanda, Giovanni},
  language     = {eng},
  pages        = {769--777},
  publisher    = {ARRAY(0xa222d60)},
  series       = {Proceedings of the ASME Summer Heat Transfer Conference, 2012, Vol 1},
  title        = {Experimental Study of Convection Heat Transfer in the Entrance Region of a Rectangular Duct with Transverse Ribs},
  year         = {2012},
}