Experimental Study on Liquid Flow and Heat Transfer in Rough Microchannels
Although roughness is negligible for laminar flow through tubes in classic fluid mechanics, the surface roughness may play an important role in microscale fluid flow due to the large ratio of surface area to volume. To further verify the influence of rough surfaces on microscale liquid flow and heat...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2019-01-01
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| Series: | Advances in Condensed Matter Physics |
| Online Access: | http://dx.doi.org/10.1155/2019/1974952 |
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| _version_ | 1832549558288121856 |
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| author | Xuan Zhang Taocheng Zhao Suchen Wu Feng Yao |
| author_facet | Xuan Zhang Taocheng Zhao Suchen Wu Feng Yao |
| author_sort | Xuan Zhang |
| collection | DOAJ |
| description | Although roughness is negligible for laminar flow through tubes in classic fluid mechanics, the surface roughness may play an important role in microscale fluid flow due to the large ratio of surface area to volume. To further verify the influence of rough surfaces on microscale liquid flow and heat transfer, a performance test system of heat transfer and liquid flow was designed and built, and a series of experimental examinations are conducted, in which the microchannel material is stainless steel and the working medium is methanol. The results indicate that the surface roughness plays a significant role in the process of laminar flow and heat transfer in microchannels. In microchannels with roughness characteristics, the Poiseuille number of liquid laminar flow relies not only on the cross section shape of the rough microchannels but also on the Reynolds number of liquid flow. The Poiseuille number of liquid laminar flow in rough microchannels increases with increasing Reynolds number. In addition, the Nusselt number of liquid laminar heat transfer is related not only to the cross section shape of a rough microchannel but also to the Reynolds number of liquid flow, and the Nusselt number increases with increasing Reynolds number. |
| format | Article |
| id | doaj-art-0ce918747cdb42f1a76267505bfcb27f |
| institution | Kabale University |
| issn | 1687-8108 1687-8124 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Condensed Matter Physics |
| spelling | doaj-art-0ce918747cdb42f1a76267505bfcb27f2025-02-03T06:10:53ZengWileyAdvances in Condensed Matter Physics1687-81081687-81242019-01-01201910.1155/2019/19749521974952Experimental Study on Liquid Flow and Heat Transfer in Rough MicrochannelsXuan Zhang0Taocheng Zhao1Suchen Wu2Feng Yao3Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, ChinaKey Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, ChinaKey Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, ChinaJiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application, School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, Jiangsu 215009, ChinaAlthough roughness is negligible for laminar flow through tubes in classic fluid mechanics, the surface roughness may play an important role in microscale fluid flow due to the large ratio of surface area to volume. To further verify the influence of rough surfaces on microscale liquid flow and heat transfer, a performance test system of heat transfer and liquid flow was designed and built, and a series of experimental examinations are conducted, in which the microchannel material is stainless steel and the working medium is methanol. The results indicate that the surface roughness plays a significant role in the process of laminar flow and heat transfer in microchannels. In microchannels with roughness characteristics, the Poiseuille number of liquid laminar flow relies not only on the cross section shape of the rough microchannels but also on the Reynolds number of liquid flow. The Poiseuille number of liquid laminar flow in rough microchannels increases with increasing Reynolds number. In addition, the Nusselt number of liquid laminar heat transfer is related not only to the cross section shape of a rough microchannel but also to the Reynolds number of liquid flow, and the Nusselt number increases with increasing Reynolds number.http://dx.doi.org/10.1155/2019/1974952 |
| spellingShingle | Xuan Zhang Taocheng Zhao Suchen Wu Feng Yao Experimental Study on Liquid Flow and Heat Transfer in Rough Microchannels Advances in Condensed Matter Physics |
| title | Experimental Study on Liquid Flow and Heat Transfer in Rough Microchannels |
| title_full | Experimental Study on Liquid Flow and Heat Transfer in Rough Microchannels |
| title_fullStr | Experimental Study on Liquid Flow and Heat Transfer in Rough Microchannels |
| title_full_unstemmed | Experimental Study on Liquid Flow and Heat Transfer in Rough Microchannels |
| title_short | Experimental Study on Liquid Flow and Heat Transfer in Rough Microchannels |
| title_sort | experimental study on liquid flow and heat transfer in rough microchannels |
| url | http://dx.doi.org/10.1155/2019/1974952 |
| work_keys_str_mv | AT xuanzhang experimentalstudyonliquidflowandheattransferinroughmicrochannels AT taochengzhao experimentalstudyonliquidflowandheattransferinroughmicrochannels AT suchenwu experimentalstudyonliquidflowandheattransferinroughmicrochannels AT fengyao experimentalstudyonliquidflowandheattransferinroughmicrochannels |