Numerical investigation of magnetic field on forced convection heat transfer and entropy generation in a microchannel with trapezoidal ribs
In this study, the effects of adding trapezoidal ribs to microchannel on functionalized multi-walled nano-tubes/water nanofluid heat transfer are examined. The dimensionless slip coefficient (0–0.1), Reynolds number (50–400) and Hartmann number (0–20) are considered as independent variables and the...
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Taylor & Francis Group
2021
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oai:doaj.org-article:98ecede0123a49608450ef17f67f733b2021-11-04T15:00:43ZNumerical investigation of magnetic field on forced convection heat transfer and entropy generation in a microchannel with trapezoidal ribs1994-20601997-003X10.1080/19942060.2021.1984991https://doaj.org/article/98ecede0123a49608450ef17f67f733b2021-01-01T00:00:00Zhttp://dx.doi.org/10.1080/19942060.2021.1984991https://doaj.org/toc/1994-2060https://doaj.org/toc/1997-003XIn this study, the effects of adding trapezoidal ribs to microchannel on functionalized multi-walled nano-tubes/water nanofluid heat transfer are examined. The dimensionless slip coefficient (0–0.1), Reynolds number (50–400) and Hartmann number (0–20) are considered as independent variables and the heat transfer along with the entropy generation are considered as the output parameters. The simulation outcomes confirm that the addition of trapezoidal ribs, on the one hand, increases the heat transfer area and, on the other hand, intensifies the possibility of vortex formation. The presence of a vortex decreases the heat transfer potential and thus reduces the performance of the trapezoidal-wall microchannel compared to the base one. With increasing Reynolds number (Re), the probability of vortex formation intensifies, which in turn diminishes the positive effects of using trapezoidal ribs. However, it is found that, with increasing Hartmann number (Ha) and dimensionless slip coefficient $ ({{\beta^\ast }} ) $ , the vortex strength is weakened, and consequently heat transfer is improved. Based on numerical computations, it is found that at Re = 400, Ha = 0 and $ {\beta ^\ast } $ = 0 and adding trapezoidal ribs to the base microchannel increases heat transfer by 11.12%.Lixuesong HanChenji LuAlexei YumashevDariush BahramiRasool KalbasiMehdi JahangiriArash KarimipourShahab S. BandKwok-Wing ChauAmir MosaviTaylor & Francis Grouparticletrapezoidal ribsvortexentropy generationmagnetic fieldnanofluidslipEngineering (General). Civil engineering (General)TA1-2040ENEngineering Applications of Computational Fluid Mechanics, Vol 15, Iss 1, Pp 1746-1760 (2021) |
| institution |
DOAJ |
| collection |
DOAJ |
| language |
EN |
| topic |
trapezoidal ribs vortex entropy generation magnetic field nanofluid slip Engineering (General). Civil engineering (General) TA1-2040 |
| spellingShingle |
trapezoidal ribs vortex entropy generation magnetic field nanofluid slip Engineering (General). Civil engineering (General) TA1-2040 Lixuesong Han Chenji Lu Alexei Yumashev Dariush Bahrami Rasool Kalbasi Mehdi Jahangiri Arash Karimipour Shahab S. Band Kwok-Wing Chau Amir Mosavi Numerical investigation of magnetic field on forced convection heat transfer and entropy generation in a microchannel with trapezoidal ribs |
| description |
In this study, the effects of adding trapezoidal ribs to microchannel on functionalized multi-walled nano-tubes/water nanofluid heat transfer are examined. The dimensionless slip coefficient (0–0.1), Reynolds number (50–400) and Hartmann number (0–20) are considered as independent variables and the heat transfer along with the entropy generation are considered as the output parameters. The simulation outcomes confirm that the addition of trapezoidal ribs, on the one hand, increases the heat transfer area and, on the other hand, intensifies the possibility of vortex formation. The presence of a vortex decreases the heat transfer potential and thus reduces the performance of the trapezoidal-wall microchannel compared to the base one. With increasing Reynolds number (Re), the probability of vortex formation intensifies, which in turn diminishes the positive effects of using trapezoidal ribs. However, it is found that, with increasing Hartmann number (Ha) and dimensionless slip coefficient $ ({{\beta^\ast }} ) $ , the vortex strength is weakened, and consequently heat transfer is improved. Based on numerical computations, it is found that at Re = 400, Ha = 0 and $ {\beta ^\ast } $ = 0 and adding trapezoidal ribs to the base microchannel increases heat transfer by 11.12%. |
| format |
article |
| author |
Lixuesong Han Chenji Lu Alexei Yumashev Dariush Bahrami Rasool Kalbasi Mehdi Jahangiri Arash Karimipour Shahab S. Band Kwok-Wing Chau Amir Mosavi |
| author_facet |
Lixuesong Han Chenji Lu Alexei Yumashev Dariush Bahrami Rasool Kalbasi Mehdi Jahangiri Arash Karimipour Shahab S. Band Kwok-Wing Chau Amir Mosavi |
| author_sort |
Lixuesong Han |
| title |
Numerical investigation of magnetic field on forced convection heat transfer and entropy generation in a microchannel with trapezoidal ribs |
| title_short |
Numerical investigation of magnetic field on forced convection heat transfer and entropy generation in a microchannel with trapezoidal ribs |
| title_full |
Numerical investigation of magnetic field on forced convection heat transfer and entropy generation in a microchannel with trapezoidal ribs |
| title_fullStr |
Numerical investigation of magnetic field on forced convection heat transfer and entropy generation in a microchannel with trapezoidal ribs |
| title_full_unstemmed |
Numerical investigation of magnetic field on forced convection heat transfer and entropy generation in a microchannel with trapezoidal ribs |
| title_sort |
numerical investigation of magnetic field on forced convection heat transfer and entropy generation in a microchannel with trapezoidal ribs |
| publisher |
Taylor & Francis Group |
| publishDate |
2021 |
| url |
https://doaj.org/article/98ecede0123a49608450ef17f67f733b |
| work_keys_str_mv |
AT lixuesonghan numericalinvestigationofmagneticfieldonforcedconvectionheattransferandentropygenerationinamicrochannelwithtrapezoidalribs AT chenjilu numericalinvestigationofmagneticfieldonforcedconvectionheattransferandentropygenerationinamicrochannelwithtrapezoidalribs AT alexeiyumashev numericalinvestigationofmagneticfieldonforcedconvectionheattransferandentropygenerationinamicrochannelwithtrapezoidalribs AT dariushbahrami numericalinvestigationofmagneticfieldonforcedconvectionheattransferandentropygenerationinamicrochannelwithtrapezoidalribs AT rasoolkalbasi numericalinvestigationofmagneticfieldonforcedconvectionheattransferandentropygenerationinamicrochannelwithtrapezoidalribs AT mehdijahangiri numericalinvestigationofmagneticfieldonforcedconvectionheattransferandentropygenerationinamicrochannelwithtrapezoidalribs AT arashkarimipour numericalinvestigationofmagneticfieldonforcedconvectionheattransferandentropygenerationinamicrochannelwithtrapezoidalribs AT shahabsband numericalinvestigationofmagneticfieldonforcedconvectionheattransferandentropygenerationinamicrochannelwithtrapezoidalribs AT kwokwingchau numericalinvestigationofmagneticfieldonforcedconvectionheattransferandentropygenerationinamicrochannelwithtrapezoidalribs AT amirmosavi numericalinvestigationofmagneticfieldonforcedconvectionheattransferandentropygenerationinamicrochannelwithtrapezoidalribs |
| _version_ |
1718444787618545664 |