Numerical Simulation of Turbulent Fluid Flow and Heat Transfer in a Ribbed Rotating Two-Pass Square Duct
<p>The local turbulent fluid flow and heat transfer in a rotating two-pass square duct with 19 pairs of in-line <math alttext="$90^{circ}$"><msup><mn>90</mn> <mo>∘</mo> </msup> </math> ribs have been investigated computation...
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| Format: | Article |
| Language: | English |
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Wiley
2005-01-01
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| Series: | International Journal of Rotating Machinery |
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| Online Access: | http://www.hindawi.net/access/get.aspx?journal=ijrm&volume=2005&pii=S1023621X02505042 |
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| author | Liou Tong-Miin Chen Shih-Hui Li Yi-Chen |
| author_facet | Liou Tong-Miin Chen Shih-Hui Li Yi-Chen |
| author_sort | Liou Tong-Miin |
| collection | DOAJ |
| description | <p>The local turbulent fluid flow and heat transfer in a rotating two-pass square duct with 19 pairs of in-line <math alttext="$90^{circ}$"><msup><mn>90</mn> <mo>∘</mo> </msup> </math> ribs have been investigated computationally. A Reynolds-averaged Navier-Stokes equation (RANS) with a two-layer <math alttext="${k}-varepsilon$"><mi>k</mi> <mo>−</mo> <mi>ϵ</mi> </math> turbulence model was solved. The in-line <math alttext="$90^{circ}$"><msup><mn>90</mn> <mo>∘</mo> </msup> </math> ribs were arranged on the leading and trailing walls with rib height-to-hydraulic diameter ratio and pitch-to-height ratio of <math alttext="$0.136$"><mn>0.136</mn> </math> and 10, respectively. The Reynolds number, based on duct hydraulic diameter and bulk mean velocity, was fixed at <math alttext="$1.0 imes 10^{4}$"><mn>1.0</mn> <mo>×</mo> <msup><mn>10</mn> <mn>4</mn> </msup> </math> whereas the rotational number varied from 0 to <math alttext="$0.2$"><mn>0.2</mn> </math> . Results are validated with previous measured velocity field and heat transfer coefficient distributions. The validation shows that the effect of rotation on the passage-averaged Nusselt number ratio can be predicted reasonably well; nevertheless, the transverse mean velocity and, in turn, the distribution of regional-averaged Nusselt number ratio are markedly underpredicted in the regions toward which the Coriolis force is directed. Further CFD studies are needed.</p> |
| format | Article |
| id | doaj-art-7f3c60a877074d278c95f6661197d3c6 |
| institution | Kabale University |
| issn | 1023-621X |
| language | English |
| publishDate | 2005-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Rotating Machinery |
| spelling | doaj-art-7f3c60a877074d278c95f6661197d3c62025-02-03T00:59:23ZengWileyInternational Journal of Rotating Machinery1023-621X2005-01-0120052152160Numerical Simulation of Turbulent Fluid Flow and Heat Transfer in a Ribbed Rotating Two-Pass Square DuctLiou Tong-MiinChen Shih-HuiLi Yi-Chen<p>The local turbulent fluid flow and heat transfer in a rotating two-pass square duct with 19 pairs of in-line <math alttext="$90^{circ}$"><msup><mn>90</mn> <mo>∘</mo> </msup> </math> ribs have been investigated computationally. A Reynolds-averaged Navier-Stokes equation (RANS) with a two-layer <math alttext="${k}-varepsilon$"><mi>k</mi> <mo>−</mo> <mi>ϵ</mi> </math> turbulence model was solved. The in-line <math alttext="$90^{circ}$"><msup><mn>90</mn> <mo>∘</mo> </msup> </math> ribs were arranged on the leading and trailing walls with rib height-to-hydraulic diameter ratio and pitch-to-height ratio of <math alttext="$0.136$"><mn>0.136</mn> </math> and 10, respectively. The Reynolds number, based on duct hydraulic diameter and bulk mean velocity, was fixed at <math alttext="$1.0 imes 10^{4}$"><mn>1.0</mn> <mo>×</mo> <msup><mn>10</mn> <mn>4</mn> </msup> </math> whereas the rotational number varied from 0 to <math alttext="$0.2$"><mn>0.2</mn> </math> . Results are validated with previous measured velocity field and heat transfer coefficient distributions. The validation shows that the effect of rotation on the passage-averaged Nusselt number ratio can be predicted reasonably well; nevertheless, the transverse mean velocity and, in turn, the distribution of regional-averaged Nusselt number ratio are markedly underpredicted in the regions toward which the Coriolis force is directed. Further CFD studies are needed.</p>http://www.hindawi.net/access/get.aspx?journal=ijrm&volume=2005&pii=S1023621X02505042ribbed rotating ductturbulent flowheat transfertwo-layer modelRANS |
| spellingShingle | Liou Tong-Miin Chen Shih-Hui Li Yi-Chen Numerical Simulation of Turbulent Fluid Flow and Heat Transfer in a Ribbed Rotating Two-Pass Square Duct International Journal of Rotating Machinery ribbed rotating duct turbulent flow heat transfer two-layer model RANS |
| title | Numerical Simulation of Turbulent Fluid Flow and Heat Transfer in a Ribbed Rotating Two-Pass Square Duct |
| title_full | Numerical Simulation of Turbulent Fluid Flow and Heat Transfer in a Ribbed Rotating Two-Pass Square Duct |
| title_fullStr | Numerical Simulation of Turbulent Fluid Flow and Heat Transfer in a Ribbed Rotating Two-Pass Square Duct |
| title_full_unstemmed | Numerical Simulation of Turbulent Fluid Flow and Heat Transfer in a Ribbed Rotating Two-Pass Square Duct |
| title_short | Numerical Simulation of Turbulent Fluid Flow and Heat Transfer in a Ribbed Rotating Two-Pass Square Duct |
| title_sort | numerical simulation of turbulent fluid flow and heat transfer in a ribbed rotating two pass square duct |
| topic | ribbed rotating duct turbulent flow heat transfer two-layer model RANS |
| url | http://www.hindawi.net/access/get.aspx?journal=ijrm&volume=2005&pii=S1023621X02505042 |
| work_keys_str_mv | AT lioutongmiin numericalsimulationofturbulentfluidflowandheattransferinaribbedrotatingtwopasssquareduct AT chenshihhui numericalsimulationofturbulentfluidflowandheattransferinaribbedrotatingtwopasssquareduct AT liyichen numericalsimulationofturbulentfluidflowandheattransferinaribbedrotatingtwopasssquareduct |