Effusion cooling represents one of the most innovative techniques to limit and control the metal temperature of combustors liner, and recently, attention has been paid by the scientific community on the characterization and the definition of design practices of such devices. Most of these studies were focused on the heat transfer on the hot side of effusion cooling plates, while just few contributions deal with the effusion plates cold side convective cooling. This paper reports a numerical survey aimed at the characterization of the convective cooling at the effusion plates cold side. Several effusion holes spacing is accounted for in conjunction with representative operating conditions. The study led to the development of an empirical correlation for the prediction of the cold side heat transfer coefficient enhancement factor, EF: it expresses the EF related to each extraction hole as a function of the pressure ratio β and the effusion plate porosity factor σ.
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December 2015
Research-Article
Heat Transfer Enhancement Due to Coolant Extraction on the Cold Side of Effusion Cooling Plates
Riccardo Da Soghe,
Riccardo Da Soghe
Ergon Research s.r.l.,
via Panciatichi 92,
Florence 50127, Italy
e-mail: riccardo.dasoghe@ergonresearch.it
via Panciatichi 92,
Florence 50127, Italy
e-mail: riccardo.dasoghe@ergonresearch.it
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Antonio Andreini,
Antonio Andreini
DIEF - Department of Industrial
Engineering Florence,
University of Florence,
via di Santa Marta 3,
Firenze 50139, Italy
e-mail: antonio.andreini@htc.de.unifi.it
Engineering Florence,
University of Florence,
via di Santa Marta 3,
Firenze 50139, Italy
e-mail: antonio.andreini@htc.de.unifi.it
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Bruno Facchini,
Bruno Facchini
DIEF - Department of Industrial
Engineering Florence,
University of Florence,
via di Santa Marta 3,
Firenze 50139, Italy
e-mail: bruno.facchini@htc.de.unifi.it
Engineering Florence,
University of Florence,
via di Santa Marta 3,
Firenze 50139, Italy
e-mail: bruno.facchini@htc.de.unifi.it
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Lorenzo Mazzei
Lorenzo Mazzei
DIEF - Department of Industrial
Engineering Florence,
University of Florence,
via di Santa Marta 3,
Firenze 50139, Italy
e-mail: lorenzo.mazzei@htc.de.unifi.it
Engineering Florence,
University of Florence,
via di Santa Marta 3,
Firenze 50139, Italy
e-mail: lorenzo.mazzei@htc.de.unifi.it
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Riccardo Da Soghe
Ergon Research s.r.l.,
via Panciatichi 92,
Florence 50127, Italy
e-mail: riccardo.dasoghe@ergonresearch.it
via Panciatichi 92,
Florence 50127, Italy
e-mail: riccardo.dasoghe@ergonresearch.it
Antonio Andreini
DIEF - Department of Industrial
Engineering Florence,
University of Florence,
via di Santa Marta 3,
Firenze 50139, Italy
e-mail: antonio.andreini@htc.de.unifi.it
Engineering Florence,
University of Florence,
via di Santa Marta 3,
Firenze 50139, Italy
e-mail: antonio.andreini@htc.de.unifi.it
Bruno Facchini
DIEF - Department of Industrial
Engineering Florence,
University of Florence,
via di Santa Marta 3,
Firenze 50139, Italy
e-mail: bruno.facchini@htc.de.unifi.it
Engineering Florence,
University of Florence,
via di Santa Marta 3,
Firenze 50139, Italy
e-mail: bruno.facchini@htc.de.unifi.it
Lorenzo Mazzei
DIEF - Department of Industrial
Engineering Florence,
University of Florence,
via di Santa Marta 3,
Firenze 50139, Italy
e-mail: lorenzo.mazzei@htc.de.unifi.it
Engineering Florence,
University of Florence,
via di Santa Marta 3,
Firenze 50139, Italy
e-mail: lorenzo.mazzei@htc.de.unifi.it
1Corresponding author.
Contributed by the Turbomachinery Committee of ASME for publication in the JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received April 25, 2015; final manuscript received May 20, 2015; published online July 14, 2015. Editor: David Wisler.
J. Eng. Gas Turbines Power. Dec 2015, 137(12): 122608 (7 pages)
Published Online: July 14, 2015
Article history
Received:
April 25, 2015
Revision Received:
May 20, 2015
Citation
Da Soghe, R., Andreini, A., Facchini, B., and Mazzei, L. (July 14, 2015). "Heat Transfer Enhancement Due to Coolant Extraction on the Cold Side of Effusion Cooling Plates." ASME. J. Eng. Gas Turbines Power. December 2015; 137(12): 122608. https://doi.org/10.1115/1.4030837
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