Modeling of Laminar Flows in Rough-Wall Microchannels
Numerical modeling and analytical approach were used to compute laminar flows in rough-wall microchannels. Both models considered the same arrangements of rectangular prism rough elements in periodical arrays. The numerical results confirmed that the flow is independent of the Reynolds number in the...
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| Veröffentlicht in: | Journal of fluids engineering 2006-07, Vol.128 (4), p.734-741 |
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| container_title | Journal of fluids engineering |
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| creator | Bavière, R. Gamrat, G. Favre-Marinet, M. Le Person, S. |
| description | Numerical modeling and analytical approach were used to compute laminar flows in rough-wall microchannels. Both models considered the same arrangements of rectangular prism rough elements in periodical arrays. The numerical results confirmed that the flow is independent of the Reynolds number in the range 1–200. The analytical model needs only one constant for most geometrical arrangements. It compares well with the numerical results. Moreover, both models are consistent with experimental data. They show that the rough elements drag is mainly responsible for the pressure drop across the channel in the upper part of the relative roughness range. |
| doi_str_mv | 10.1115/1.2201635 |
| format | Article |
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Both models considered the same arrangements of rectangular prism rough elements in periodical arrays. The numerical results confirmed that the flow is independent of the Reynolds number in the range 1–200. The analytical model needs only one constant for most geometrical arrangements. It compares well with the numerical results. Moreover, both models are consistent with experimental data. They show that the rough elements drag is mainly responsible for the pressure drop across the channel in the upper part of the relative roughness range.</description><identifier>ISSN: 0098-2202</identifier><identifier>EISSN: 1528-901X</identifier><identifier>DOI: 10.1115/1.2201635</identifier><identifier>CODEN: JFEGA4</identifier><language>eng</language><publisher>New York, NY: ASME</publisher><subject>Analytical biochemistry: general aspects, technics, instrumentation ; Analytical, structural and metabolic biochemistry ; Applied fluid mechanics ; Applied sciences ; Biological and medical sciences ; Design. Technologies. Operation analysis. Testing ; Electronics ; Engineering Sciences ; Exact sciences and technology ; Fluid dynamics ; Fluid mechanics ; Fluidics ; Fluids mechanics ; Fundamental and applied biological sciences. Psychology ; Fundamental areas of phenomenology (including applications) ; Integrated circuits ; Mechanics ; Physics ; Semiconductor electronics. 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Fluids Eng</addtitle><description>Numerical modeling and analytical approach were used to compute laminar flows in rough-wall microchannels. Both models considered the same arrangements of rectangular prism rough elements in periodical arrays. The numerical results confirmed that the flow is independent of the Reynolds number in the range 1–200. The analytical model needs only one constant for most geometrical arrangements. It compares well with the numerical results. Moreover, both models are consistent with experimental data. They show that the rough elements drag is mainly responsible for the pressure drop across the channel in the upper part of the relative roughness range.</description><subject>Analytical biochemistry: general aspects, technics, instrumentation</subject><subject>Analytical, structural and metabolic biochemistry</subject><subject>Applied fluid mechanics</subject><subject>Applied sciences</subject><subject>Biological and medical sciences</subject><subject>Design. Technologies. Operation analysis. Testing</subject><subject>Electronics</subject><subject>Engineering Sciences</subject><subject>Exact sciences and technology</subject><subject>Fluid dynamics</subject><subject>Fluid mechanics</subject><subject>Fluidics</subject><subject>Fluids mechanics</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Fundamental areas of phenomenology (including applications)</subject><subject>Integrated circuits</subject><subject>Mechanics</subject><subject>Physics</subject><subject>Semiconductor electronics. Microelectronics. Optoelectronics. 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Technologies. Operation analysis. Testing</topic><topic>Electronics</topic><topic>Engineering Sciences</topic><topic>Exact sciences and technology</topic><topic>Fluid dynamics</topic><topic>Fluid mechanics</topic><topic>Fluidics</topic><topic>Fluids mechanics</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Fundamental areas of phenomenology (including applications)</topic><topic>Integrated circuits</topic><topic>Mechanics</topic><topic>Physics</topic><topic>Semiconductor electronics. Microelectronics. Optoelectronics. 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Fluids Eng</stitle><date>2006-07-01</date><risdate>2006</risdate><volume>128</volume><issue>4</issue><spage>734</spage><epage>741</epage><pages>734-741</pages><issn>0098-2202</issn><eissn>1528-901X</eissn><coden>JFEGA4</coden><abstract>Numerical modeling and analytical approach were used to compute laminar flows in rough-wall microchannels. Both models considered the same arrangements of rectangular prism rough elements in periodical arrays. The numerical results confirmed that the flow is independent of the Reynolds number in the range 1–200. The analytical model needs only one constant for most geometrical arrangements. It compares well with the numerical results. Moreover, both models are consistent with experimental data. 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| ispartof | Journal of fluids engineering, 2006-07, Vol.128 (4), p.734-741 |
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| source | ASME Transactions Journals (Current) |
| subjects | Analytical biochemistry: general aspects, technics, instrumentation Analytical, structural and metabolic biochemistry Applied fluid mechanics Applied sciences Biological and medical sciences Design. Technologies. Operation analysis. Testing Electronics Engineering Sciences Exact sciences and technology Fluid dynamics Fluid mechanics Fluidics Fluids mechanics Fundamental and applied biological sciences. Psychology Fundamental areas of phenomenology (including applications) Integrated circuits Mechanics Physics Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices |
| title | Modeling of Laminar Flows in Rough-Wall Microchannels |
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