Flow over and forced convection heat transfer around a semi-circular cylinder at incidence
Wake dynamics and forced convective heat transfer characteristics past a semi-circular cylinder at incidence have been investigated numerically. Utilizing air as an operating fluid computations are carried out for wide ranges of the Reynolds number (80⩽Re⩽180) and angle of incidences (0⩽α⩽180°). Ang...
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| Veröffentlicht in: | International journal of heat and mass transfer 2012-09, Vol.55 (19-20), p.5171-5184 |
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| container_issue | 19-20 |
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| container_title | International journal of heat and mass transfer |
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| creator | Pal Singh Bhinder, Amrit Sarkar, Sandip Dalal, Amaresh |
| description | Wake dynamics and forced convective heat transfer characteristics past a semi-circular cylinder at incidence have been investigated numerically. Utilizing air as an operating fluid computations are carried out for wide ranges of the Reynolds number (80⩽Re⩽180) and angle of incidences (0⩽α⩽180°). Angle of incidence reveals three flow separation zones. Structure properties of shear layer and vortex motions on each flow separation zones are analyzed critically. Functional dependence of drag (CD), lift (CL), and moment (CM) coefficients on the angle of incidence is explored and analyzed in detail. Increase in angle of incidence increases streamline curvature. A structural similarity is observed between the contours of vorticity and the corresponding isotherms. Strouhal number shows a decreasing trend up to certain values of α and thereafter it increases marginally. A new correlation of Strouhal number as a function of Re and α has been established for the present range of Reynolds numbers. At the singularity points a sudden jump in local Nusselt number distribution is observed. The trend of variation of average Nusselt number with α is similar to that of Strouhal number variation. The average Nusselt number is found to vary as Re0.529(1+α)-0.0476. |
| doi_str_mv | 10.1016/j.ijheatmasstransfer.2012.05.018 |
| format | Article |
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Utilizing air as an operating fluid computations are carried out for wide ranges of the Reynolds number (80⩽Re⩽180) and angle of incidences (0⩽α⩽180°). Angle of incidence reveals three flow separation zones. Structure properties of shear layer and vortex motions on each flow separation zones are analyzed critically. Functional dependence of drag (CD), lift (CL), and moment (CM) coefficients on the angle of incidence is explored and analyzed in detail. Increase in angle of incidence increases streamline curvature. A structural similarity is observed between the contours of vorticity and the corresponding isotherms. Strouhal number shows a decreasing trend up to certain values of α and thereafter it increases marginally. A new correlation of Strouhal number as a function of Re and α has been established for the present range of Reynolds numbers. At the singularity points a sudden jump in local Nusselt number distribution is observed. The trend of variation of average Nusselt number with α is similar to that of Strouhal number variation. 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Utilizing air as an operating fluid computations are carried out for wide ranges of the Reynolds number (80⩽Re⩽180) and angle of incidences (0⩽α⩽180°). Angle of incidence reveals three flow separation zones. Structure properties of shear layer and vortex motions on each flow separation zones are analyzed critically. Functional dependence of drag (CD), lift (CL), and moment (CM) coefficients on the angle of incidence is explored and analyzed in detail. Increase in angle of incidence increases streamline curvature. A structural similarity is observed between the contours of vorticity and the corresponding isotherms. Strouhal number shows a decreasing trend up to certain values of α and thereafter it increases marginally. A new correlation of Strouhal number as a function of Re and α has been established for the present range of Reynolds numbers. At the singularity points a sudden jump in local Nusselt number distribution is observed. The trend of variation of average Nusselt number with α is similar to that of Strouhal number variation. The average Nusselt number is found to vary as Re0.529(1+α)-0.0476.</description><subject>Aerodynamics</subject><subject>Angle of incidence</subject><subject>Computational fluid dynamics</subject><subject>Convection and heat transfer</subject><subject>Curvature</subject><subject>Cylinder</subject><subject>Cylinders</subject><subject>Exact sciences and technology</subject><subject>Fluid dynamics</subject><subject>Fluid flow</subject><subject>Forced convection</subject><subject>Fundamental areas of phenomenology (including applications)</subject><subject>Heat transfer</subject><subject>Nusselt number</subject><subject>Physics</subject><subject>Rotational flow and vorticity</subject><subject>Separated flows</subject><subject>Strouhal number</subject><subject>Turbulent flows, convection, and heat transfer</subject><subject>Vortex shedding</subject><issn>0017-9310</issn><issn>1879-2189</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><recordid>eNqNkL1OwzAURi0EEqXwDl6QuiTYTuLEG6ii_KgSCyws1q1jC0dJXOykqG-PoxYWFqYr6x5_n-5BaEFJSgnlN01qmw8NQwchDB76YLRPGaEsJUVKaHWCZrQqRcJoJU7RjBBaJiKj5BxdhNBMT5LzGXpfte4Lu532GPoaG-eVrrFy_U6rwboeTx34pwCDd2PEAAfd2URZr8YWPFb71vb1tB-w7ZWtda_0JToz0AZ9dZxz9La6f10-JuuXh6fl3TpROSmGxHCe5Sznpagyw4FoVhBdEmWgNDVUG1NslIBSsKxidVbyguZ5YcBAToGLnGVztDjkbr37HHUYZGeD0m0LvXZjkDSLf6jgLIvo7QFV3oXgtZFbbzvwe0mJnLTKRv7VKietkhQyao0R18c2CApaExllw28O45SWXExVzwdOx9N3NqYEZScttfVRrayd_X_pNwX0mxM</recordid><startdate>20120901</startdate><enddate>20120901</enddate><creator>Pal Singh Bhinder, Amrit</creator><creator>Sarkar, Sandip</creator><creator>Dalal, Amaresh</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>H8D</scope><scope>KR7</scope><scope>L7M</scope></search><sort><creationdate>20120901</creationdate><title>Flow over and forced convection heat transfer around a semi-circular cylinder at incidence</title><author>Pal Singh Bhinder, Amrit ; Sarkar, Sandip ; Dalal, Amaresh</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c405t-f66342467983f6a0e250e70cfa7fda8bf5bc9a792382d37651445fafa41a69423</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Aerodynamics</topic><topic>Angle of incidence</topic><topic>Computational fluid dynamics</topic><topic>Convection and heat transfer</topic><topic>Curvature</topic><topic>Cylinder</topic><topic>Cylinders</topic><topic>Exact sciences and technology</topic><topic>Fluid dynamics</topic><topic>Fluid flow</topic><topic>Forced convection</topic><topic>Fundamental areas of phenomenology (including applications)</topic><topic>Heat transfer</topic><topic>Nusselt number</topic><topic>Physics</topic><topic>Rotational flow and vorticity</topic><topic>Separated flows</topic><topic>Strouhal number</topic><topic>Turbulent flows, convection, and heat transfer</topic><topic>Vortex shedding</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Pal Singh Bhinder, Amrit</creatorcontrib><creatorcontrib>Sarkar, Sandip</creatorcontrib><creatorcontrib>Dalal, Amaresh</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>Aerospace Database</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>International journal of heat and mass transfer</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Pal Singh Bhinder, Amrit</au><au>Sarkar, Sandip</au><au>Dalal, Amaresh</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Flow over and forced convection heat transfer around a semi-circular cylinder at incidence</atitle><jtitle>International journal of heat and mass transfer</jtitle><date>2012-09-01</date><risdate>2012</risdate><volume>55</volume><issue>19-20</issue><spage>5171</spage><epage>5184</epage><pages>5171-5184</pages><issn>0017-9310</issn><eissn>1879-2189</eissn><coden>IJHMAK</coden><abstract>Wake dynamics and forced convective heat transfer characteristics past a semi-circular cylinder at incidence have been investigated numerically. Utilizing air as an operating fluid computations are carried out for wide ranges of the Reynolds number (80⩽Re⩽180) and angle of incidences (0⩽α⩽180°). Angle of incidence reveals three flow separation zones. Structure properties of shear layer and vortex motions on each flow separation zones are analyzed critically. Functional dependence of drag (CD), lift (CL), and moment (CM) coefficients on the angle of incidence is explored and analyzed in detail. Increase in angle of incidence increases streamline curvature. A structural similarity is observed between the contours of vorticity and the corresponding isotherms. Strouhal number shows a decreasing trend up to certain values of α and thereafter it increases marginally. A new correlation of Strouhal number as a function of Re and α has been established for the present range of Reynolds numbers. At the singularity points a sudden jump in local Nusselt number distribution is observed. The trend of variation of average Nusselt number with α is similar to that of Strouhal number variation. The average Nusselt number is found to vary as Re0.529(1+α)-0.0476.</abstract><cop>Kidlington</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.ijheatmasstransfer.2012.05.018</doi><tpages>14</tpages></addata></record> |
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| ispartof | International journal of heat and mass transfer, 2012-09, Vol.55 (19-20), p.5171-5184 |
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| subjects | Aerodynamics Angle of incidence Computational fluid dynamics Convection and heat transfer Curvature Cylinder Cylinders Exact sciences and technology Fluid dynamics Fluid flow Forced convection Fundamental areas of phenomenology (including applications) Heat transfer Nusselt number Physics Rotational flow and vorticity Separated flows Strouhal number Turbulent flows, convection, and heat transfer Vortex shedding |
| title | Flow over and forced convection heat transfer around a semi-circular cylinder at incidence |
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