An experimental and numerical investigation on a confined impinging air jet at high Reynolds numbers
An experimental and numerical study is carried out to investigate flow field of a confined jet issuing from the lower surface and impinging normally on the upper surface. The mean velocity, turbulence intensity and pressure distributions in the impingement region were obtained for Reynolds numbers r...
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| Veröffentlicht in: | Applied thermal engineering 2005-02, Vol.25 (2), p.409-421 |
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| container_title | Applied thermal engineering |
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| creator | Baydar, E. Ozmen, Y. |
| description | An experimental and numerical study is carried out to investigate flow field of a confined jet issuing from the lower surface and impinging normally on the upper surface. The mean velocity, turbulence intensity and pressure distributions in the impingement region were obtained for Reynolds numbers ranging from 30,000 to 50,000 and a nozzle-to-plate spacing range of 0.2–6. The effects of Reynolds number and nozzle-to-plate spacing on the flow structure are examined. A subatmospheric region occurs on the impingement plate at nozzle-to-plate spacings up to 2 for Reynolds numbers studied and it moves radially outward from the stagnation point with increasing nozzle-to-plate spacing. It is concluded that there exists a linkage among the subatmospheric region, turbulence intensity and heat transfer coefficients. The numerical results obtained using the standard
k–
ε turbulence model are in agreement with the experimental results except for the nozzle-to-plate spacings less than one. |
| doi_str_mv | 10.1016/j.applthermaleng.2004.05.016 |
| format | Article |
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k–
ε turbulence model are in agreement with the experimental results except for the nozzle-to-plate spacings less than one.</description><subject>Applied sciences</subject><subject>Energy</subject><subject>Energy. Thermal use of fuels</subject><subject>Exact sciences and technology</subject><subject>Heat transfer</subject><subject>Jet impingement</subject><subject>k– ε model</subject><subject>Pressure coefficient</subject><subject>Subatmospheric region</subject><subject>Theoretical studies. Data and constants. Metering</subject><subject>Turbulence</subject><issn>1359-4311</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2005</creationdate><recordtype>article</recordtype><recordid>eNqNkE1LAzEQhnNQsFb_Qw7qrWuyyX6Bl1KsCgVB9ByyyWSbZTe7Jtui_96UFsSbMBBm5p13Jg9CN5QklND8vk3kOHbTFnwvO3BNkhLCE5IlsXmGZpRl1YIzSi_QZQgtITQtCz5DeukwfI3gbQ9ukh2WTmO362NBxcy6PYTJNnKyg8MxJFaDM9aBxrYfrWtiYGk9bmHCcsJb22zxG3y7odPhYFSDD1fo3MguwPXpnaOP9eP76nmxeX16WS03C8UInxaF0YSDyYCoMq84KyqamlRXeVbTjEJlKJFFQWtOSVVnhhUpL0FCQYgxnOmczdHd0Xf0w-cuHi56GxR0nXQw7IJIq7TMM8ai8OEoVH4IwYMRYwQg_begRBxwilb8xSkOOAXJRGzG8dvTHhkiJeOlUzb8euSM5vHiqFsfdRA_vbfgRVAWnAJtPahJ6MH-b-EPq-yXOQ</recordid><startdate>200502</startdate><enddate>200502</enddate><creator>Baydar, E.</creator><creator>Ozmen, Y.</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TB</scope><scope>8FD</scope><scope>FR3</scope><scope>KR7</scope></search><sort><creationdate>200502</creationdate><title>An experimental and numerical investigation on a confined impinging air jet at high Reynolds numbers</title><author>Baydar, E. ; Ozmen, Y.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c304t-7fd04ef5e0c869437912f2d965b151e9f10a771b4109b5f37248eae700ff43d63</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2005</creationdate><topic>Applied sciences</topic><topic>Energy</topic><topic>Energy. Thermal use of fuels</topic><topic>Exact sciences and technology</topic><topic>Heat transfer</topic><topic>Jet impingement</topic><topic>k– ε model</topic><topic>Pressure coefficient</topic><topic>Subatmospheric region</topic><topic>Theoretical studies. Data and constants. Metering</topic><topic>Turbulence</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Baydar, E.</creatorcontrib><creatorcontrib>Ozmen, Y.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Civil Engineering Abstracts</collection><jtitle>Applied thermal engineering</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Baydar, E.</au><au>Ozmen, Y.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>An experimental and numerical investigation on a confined impinging air jet at high Reynolds numbers</atitle><jtitle>Applied thermal engineering</jtitle><date>2005-02</date><risdate>2005</risdate><volume>25</volume><issue>2</issue><spage>409</spage><epage>421</epage><pages>409-421</pages><issn>1359-4311</issn><abstract>An experimental and numerical study is carried out to investigate flow field of a confined jet issuing from the lower surface and impinging normally on the upper surface. The mean velocity, turbulence intensity and pressure distributions in the impingement region were obtained for Reynolds numbers ranging from 30,000 to 50,000 and a nozzle-to-plate spacing range of 0.2–6. The effects of Reynolds number and nozzle-to-plate spacing on the flow structure are examined. A subatmospheric region occurs on the impingement plate at nozzle-to-plate spacings up to 2 for Reynolds numbers studied and it moves radially outward from the stagnation point with increasing nozzle-to-plate spacing. It is concluded that there exists a linkage among the subatmospheric region, turbulence intensity and heat transfer coefficients. The numerical results obtained using the standard
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| identifier | ISSN: 1359-4311 |
| ispartof | Applied thermal engineering, 2005-02, Vol.25 (2), p.409-421 |
| issn | 1359-4311 |
| language | eng |
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| source | Elsevier ScienceDirect Journals |
| subjects | Applied sciences Energy Energy. Thermal use of fuels Exact sciences and technology Heat transfer Jet impingement k– ε model Pressure coefficient Subatmospheric region Theoretical studies. Data and constants. Metering Turbulence |
| title | An experimental and numerical investigation on a confined impinging air jet at high Reynolds numbers |
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