Structure Inclination Angle in a Turbulent Adverse Pressure Gradient Boundary Layer
The effect of a strong adverse pressure gradient on the turbulent structure in an equilibrium boundary layer was studied using two-point space-time correlations. The ρuu correlations from the adverse pressure gradient layer were found to be inclined at a considerably higher angle with respect to the...
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Veröffentlicht in: | Journal of fluids engineering 2002-12, Vol.124 (4), p.1025-1033 |
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creator | Krogstad, Per-A˚ge Kaspersen, Jon Harald |
description | The effect of a strong adverse pressure gradient on the turbulent structure in an equilibrium boundary layer was studied using two-point space-time correlations. The ρuu correlations from the adverse pressure gradient layer were found to be inclined at a considerably higher angle with respect to the wall in the inner region than in the corresponding zero pressure gradient reference case. A wavelet analysis of the correlation data showed that differences in the inclination angle exist at all length scales larger than the boundary layer thickness. The inclination angle for the conventionally averaged correlation contours was found to be in close agreement with the inclinations derived from the wavelet filtered contours corresponding to the most energetic wave numbers. |
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The ρuu correlations from the adverse pressure gradient layer were found to be inclined at a considerably higher angle with respect to the wall in the inner region than in the corresponding zero pressure gradient reference case. A wavelet analysis of the correlation data showed that differences in the inclination angle exist at all length scales larger than the boundary layer thickness. The inclination angle for the conventionally averaged correlation contours was found to be in close agreement with the inclinations derived from the wavelet filtered contours corresponding to the most energetic wave numbers.</description><identifier>ISSN: 0098-2202</identifier><identifier>EISSN: 1528-901X</identifier><identifier>DOI: 10.1115/1.1511161</identifier><identifier>CODEN: JFEGA4</identifier><language>eng</language><publisher>New York, NY: ASME</publisher><subject>Boundary layer and shear turbulence ; Exact sciences and technology ; Fluid dynamics ; Fundamental areas of phenomenology (including applications) ; Instrumentation for fluid dynamics ; Physics ; Turbulent flows, convection, and heat transfer</subject><ispartof>Journal of fluids engineering, 2002-12, Vol.124 (4), p.1025-1033</ispartof><rights>2003 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a310t-e26f9896e9f0d983bc5639a6508afcead82ae82b26be29df9e3d3ca81a91e6953</citedby><cites>FETCH-LOGICAL-a310t-e26f9896e9f0d983bc5639a6508afcead82ae82b26be29df9e3d3ca81a91e6953</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925,38520</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=14450441$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Krogstad, Per-A˚ge</creatorcontrib><creatorcontrib>Kaspersen, Jon Harald</creatorcontrib><title>Structure Inclination Angle in a Turbulent Adverse Pressure Gradient Boundary Layer</title><title>Journal of fluids engineering</title><addtitle>J. Fluids Eng</addtitle><description>The effect of a strong adverse pressure gradient on the turbulent structure in an equilibrium boundary layer was studied using two-point space-time correlations. The ρuu correlations from the adverse pressure gradient layer were found to be inclined at a considerably higher angle with respect to the wall in the inner region than in the corresponding zero pressure gradient reference case. A wavelet analysis of the correlation data showed that differences in the inclination angle exist at all length scales larger than the boundary layer thickness. The inclination angle for the conventionally averaged correlation contours was found to be in close agreement with the inclinations derived from the wavelet filtered contours corresponding to the most energetic wave numbers.</description><subject>Boundary layer and shear turbulence</subject><subject>Exact sciences and technology</subject><subject>Fluid dynamics</subject><subject>Fundamental areas of phenomenology (including applications)</subject><subject>Instrumentation for fluid dynamics</subject><subject>Physics</subject><subject>Turbulent flows, convection, and heat transfer</subject><issn>0098-2202</issn><issn>1528-901X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2002</creationdate><recordtype>article</recordtype><recordid>eNpFkM1Lw0AQxRdRsFYPnr3kouAhdT-y6e6xFq2FgkIreFsmm4mkpJu6mxX635vQgqcZmN97zHuE3DI6YYzJJzZhsl9ydkZGTHKVasq-zsmIUq1Szim_JFchbCllQmRqRNbrzkfbRY_J0tmmdtDVrUtm7rvBpHYJJJvoi9ig65JZ-Ys-YPLhMYRBsfBQ1sPluY2uBH9IVnBAf00uKmgC3pzmmHy-vmzmb-nqfbGcz1YpCEa7FHleaaVz1BUttRKFlbnQkEuqoLIIpeKAihc8L5DrstIoSmFBMdAMcy3FmDwcffe-_YkYOrOrg8WmAYdtDIZPp7JvIu_BxyNofRuCx8rsfb3r_zWMmqE2w8yptp69P5lCsNBUHpytw78gyyTNsoG7O3IQdmi2bfSuz2oyqadZJv4A7Qp1oA</recordid><startdate>20021201</startdate><enddate>20021201</enddate><creator>Krogstad, Per-A˚ge</creator><creator>Kaspersen, Jon Harald</creator><general>ASME</general><general>American Society of Mechanical Engineers</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TB</scope><scope>8FD</scope><scope>FR3</scope></search><sort><creationdate>20021201</creationdate><title>Structure Inclination Angle in a Turbulent Adverse Pressure Gradient Boundary Layer</title><author>Krogstad, Per-A˚ge ; Kaspersen, Jon Harald</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a310t-e26f9896e9f0d983bc5639a6508afcead82ae82b26be29df9e3d3ca81a91e6953</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2002</creationdate><topic>Boundary layer and shear turbulence</topic><topic>Exact sciences and technology</topic><topic>Fluid dynamics</topic><topic>Fundamental areas of phenomenology (including applications)</topic><topic>Instrumentation for fluid dynamics</topic><topic>Physics</topic><topic>Turbulent flows, convection, and heat transfer</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Krogstad, Per-A˚ge</creatorcontrib><creatorcontrib>Kaspersen, Jon Harald</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><jtitle>Journal of fluids engineering</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Krogstad, Per-A˚ge</au><au>Kaspersen, Jon Harald</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Structure Inclination Angle in a Turbulent Adverse Pressure Gradient Boundary Layer</atitle><jtitle>Journal of fluids engineering</jtitle><stitle>J. Fluids Eng</stitle><date>2002-12-01</date><risdate>2002</risdate><volume>124</volume><issue>4</issue><spage>1025</spage><epage>1033</epage><pages>1025-1033</pages><issn>0098-2202</issn><eissn>1528-901X</eissn><coden>JFEGA4</coden><abstract>The effect of a strong adverse pressure gradient on the turbulent structure in an equilibrium boundary layer was studied using two-point space-time correlations. The ρuu correlations from the adverse pressure gradient layer were found to be inclined at a considerably higher angle with respect to the wall in the inner region than in the corresponding zero pressure gradient reference case. A wavelet analysis of the correlation data showed that differences in the inclination angle exist at all length scales larger than the boundary layer thickness. The inclination angle for the conventionally averaged correlation contours was found to be in close agreement with the inclinations derived from the wavelet filtered contours corresponding to the most energetic wave numbers.</abstract><cop>New York, NY</cop><pub>ASME</pub><doi>10.1115/1.1511161</doi><tpages>9</tpages></addata></record> |
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subjects | Boundary layer and shear turbulence Exact sciences and technology Fluid dynamics Fundamental areas of phenomenology (including applications) Instrumentation for fluid dynamics Physics Turbulent flows, convection, and heat transfer |
title | Structure Inclination Angle in a Turbulent Adverse Pressure Gradient Boundary Layer |
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