Efficiency of gaseous-film cooling in a high-turbulence flow

Abstract

Experimental results are reported on the efficiency of wall cooling with a slot-generated gaseous film (slot cooling) at high turbulence levels of the free stream. It is shown that turbulence strongly degrades the protective properties of the cooling film both in gradientless and accelerated flows. The parameters of the inlet flow are studied in detail, and data on turbulence-level decrease along the flow are presented. A technique for taking into account the high turbulence level in computing the efficiency of the cooling film is presented. The curves thus derived are in a good agreement with the experimental data over a wide range of variables.

Original language	English
Pages (from-to)	295-299
Number of pages	5
Journal	Heat Transfer Research
Volume	25
Issue number	3
Publication status	Published - 1 Dec 1993
Externally published	Yes

ASJC Scopus subject areas

Condensed Matter Physics
Mechanical Engineering
Fluid Flow and Transfer Processes

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title = "Efficiency of gaseous-film cooling in a high-turbulence flow",

abstract = "Experimental results are reported on the efficiency of wall cooling with a slot-generated gaseous film (slot cooling) at high turbulence levels of the free stream. It is shown that turbulence strongly degrades the protective properties of the cooling film both in gradientless and accelerated flows. The parameters of the inlet flow are studied in detail, and data on turbulence-level decrease along the flow are presented. A technique for taking into account the high turbulence level in computing the efficiency of the cooling film is presented. The curves thus derived are in a good agreement with the experimental data over a wide range of variables.",

author = "Lebedev, {V. P.} and Lemanov, {V. V.} and Misyura, {S. Ya}",

year = "1993",

month = dec,

day = "1",

language = "English",

volume = "25",

pages = "295--299",

journal = "Heat Transfer Research",

issn = "1064-2285",

publisher = "Begell House Inc.",

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AU - Lebedev, V. P.

AU - Lemanov, V. V.

AU - Misyura, S. Ya

PY - 1993/12/1

Y1 - 1993/12/1

N2 - Experimental results are reported on the efficiency of wall cooling with a slot-generated gaseous film (slot cooling) at high turbulence levels of the free stream. It is shown that turbulence strongly degrades the protective properties of the cooling film both in gradientless and accelerated flows. The parameters of the inlet flow are studied in detail, and data on turbulence-level decrease along the flow are presented. A technique for taking into account the high turbulence level in computing the efficiency of the cooling film is presented. The curves thus derived are in a good agreement with the experimental data over a wide range of variables.

AB - Experimental results are reported on the efficiency of wall cooling with a slot-generated gaseous film (slot cooling) at high turbulence levels of the free stream. It is shown that turbulence strongly degrades the protective properties of the cooling film both in gradientless and accelerated flows. The parameters of the inlet flow are studied in detail, and data on turbulence-level decrease along the flow are presented. A technique for taking into account the high turbulence level in computing the efficiency of the cooling film is presented. The curves thus derived are in a good agreement with the experimental data over a wide range of variables.

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