On The Effect of Flow Direction on Mixed Convection Around Heated Circular Cylinder
A numerical investigation of laminar mixed convection around horizontal isothermalcylinder is presented. The free stream direction varies between the vertically upward(assisting flow) and vertically downward (opposing flow). The governing equation in termsof the stream function, vorticity and temper...
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| Format: | Article |
| Language: | English |
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Unviversity of Technology- Iraq
2009-05-01
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| Series: | Engineering and Technology Journal |
| Subjects: | |
| Online Access: | https://etj.uotechnology.edu.iq/article_35630_e3cfa5e770028434d3d784bd6e2304bc.pdf |
| _version_ | 1797325229297500160 |
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| author | Jalal M. Jalil Qasim S. Mehdi Mohammed A. Ahmed |
| author_facet | Jalal M. Jalil Qasim S. Mehdi Mohammed A. Ahmed |
| author_sort | Jalal M. Jalil |
| collection | DOAJ |
| description | A numerical investigation of laminar mixed convection around horizontal isothermalcylinder is presented. The free stream direction varies between the vertically upward(assisting flow) and vertically downward (opposing flow). The governing equation in termsof the stream function, vorticity and temperature are expressed in a body-fitted coordinatesystem and solved numerically by explicit method. Results are presented for Reynoldsnumber from 20 to 300 with Grashof numbers from 0 to 120000. The Prandtl number waskept constant at 0.7. Correlation for the average Nusselt number around the cylinder in theforced and mixed convection regime is suggested. Comparison with previous theoretical andexperimental results shows good agreement. It was established that the maximum heattransfer from cylinder occurs in case of assisting flow |
| first_indexed | 2024-03-08T06:06:34Z |
| format | Article |
| id | doaj.art-6a61c1fc9cd04a9fa7671472565b0ae3 |
| institution | Directory Open Access Journal |
| issn | 1681-6900 2412-0758 |
| language | English |
| last_indexed | 2024-03-08T06:06:34Z |
| publishDate | 2009-05-01 |
| publisher | Unviversity of Technology- Iraq |
| record_format | Article |
| series | Engineering and Technology Journal |
| spelling | doaj.art-6a61c1fc9cd04a9fa7671472565b0ae32024-02-04T17:49:20ZengUnviversity of Technology- IraqEngineering and Technology Journal1681-69002412-07582009-05-012771270127910.30684/etj.27.7.435630On The Effect of Flow Direction on Mixed Convection Around Heated Circular CylinderJalal M. JalilQasim S. MehdiMohammed A. AhmedA numerical investigation of laminar mixed convection around horizontal isothermalcylinder is presented. The free stream direction varies between the vertically upward(assisting flow) and vertically downward (opposing flow). The governing equation in termsof the stream function, vorticity and temperature are expressed in a body-fitted coordinatesystem and solved numerically by explicit method. Results are presented for Reynoldsnumber from 20 to 300 with Grashof numbers from 0 to 120000. The Prandtl number waskept constant at 0.7. Correlation for the average Nusselt number around the cylinder in theforced and mixed convection regime is suggested. Comparison with previous theoretical andexperimental results shows good agreement. It was established that the maximum heattransfer from cylinder occurs in case of assisting flowhttps://etj.uotechnology.edu.iq/article_35630_e3cfa5e770028434d3d784bd6e2304bc.pdfstream functionvorticitytime marchingmixed convection |
| spellingShingle | Jalal M. Jalil Qasim S. Mehdi Mohammed A. Ahmed On The Effect of Flow Direction on Mixed Convection Around Heated Circular Cylinder Engineering and Technology Journal stream function vorticity time marching mixed convection |
| title | On The Effect of Flow Direction on Mixed Convection Around Heated Circular Cylinder |
| title_full | On The Effect of Flow Direction on Mixed Convection Around Heated Circular Cylinder |
| title_fullStr | On The Effect of Flow Direction on Mixed Convection Around Heated Circular Cylinder |
| title_full_unstemmed | On The Effect of Flow Direction on Mixed Convection Around Heated Circular Cylinder |
| title_short | On The Effect of Flow Direction on Mixed Convection Around Heated Circular Cylinder |
| title_sort | on the effect of flow direction on mixed convection around heated circular cylinder |
| topic | stream function vorticity time marching mixed convection |
| url | https://etj.uotechnology.edu.iq/article_35630_e3cfa5e770028434d3d784bd6e2304bc.pdf |
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