Effect of Knudsen Number, Lid Velocity and Velocity Ratio on Flow Features of Single and Double Lid Driven Cavities
Effects of Knudsen number, lid velocity and velocity ratio are investigated on the flow features of single lid driven cavity with an aspect ratio of one and double lid driven cavity of aspect ratio two. Knudsen numbers studied are 0.01(early slip regime), 0.1 (slip regime) and 1 (transitional regime...
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| Veröffentlicht in: | Journal of Applied Fluid Mechanics 2019-09, Vol.12 (5), p.1575-1583 |
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| container_title | Journal of Applied Fluid Mechanics |
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| creator | Mukherjee, S. Shahabi, V. Gowtham, R. Rajan, K. S. Velamati, R. K. |
| description | Effects of Knudsen number, lid velocity and velocity ratio are investigated on the flow features of single lid driven cavity with an aspect ratio of one and double lid driven cavity of aspect ratio two. Knudsen numbers studied are 0.01(early slip regime), 0.1 (slip regime) and 1 (transitional regime). Lid velocities investigated are 100 m/s, 200 m/s and 500 m/s. The velocity ratios explored are 1 and -1. Knudsen number was found to have a huge impact on the flow rigidity. Lid velocity tends to shift the central vortex to the top left of the cavity for a cavity with aspect ratio of one and shifts the upper vortex to the top left of the cavity for a cavity with aspect ratio of two. Lid velocity does not affect the slip to a great extent on the lid. Changing the velocity ratio from 1 to -1 leads to the reversal of the relative vorticity in the top and bottom half of the cavity. |
| doi_str_mv | 10.29252/jafm.12.05.29335 |
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S. ; Velamati, R. K.</creator><creatorcontrib>Mukherjee, S. ; Shahabi, V. ; Gowtham, R. ; Rajan, K. S. ; Velamati, R. K. ; Department of Mechanical Engineering, Amrita School of Engineering, Coimbatore, Amrita Vishwa Vidya ; High Performance Computing (HPC) Laboratory, Department of Mechanical Engineering, Ferdowsi Univers</creatorcontrib><description>Effects of Knudsen number, lid velocity and velocity ratio are investigated on the flow features of single lid driven cavity with an aspect ratio of one and double lid driven cavity of aspect ratio two. Knudsen numbers studied are 0.01(early slip regime), 0.1 (slip regime) and 1 (transitional regime). Lid velocities investigated are 100 m/s, 200 m/s and 500 m/s. The velocity ratios explored are 1 and -1. Knudsen number was found to have a huge impact on the flow rigidity. Lid velocity tends to shift the central vortex to the top left of the cavity for a cavity with aspect ratio of one and shifts the upper vortex to the top left of the cavity for a cavity with aspect ratio of two. Lid velocity does not affect the slip to a great extent on the lid. Changing the velocity ratio from 1 to -1 leads to the reversal of the relative vorticity in the top and bottom half of the cavity.</description><identifier>ISSN: 1735-3572</identifier><identifier>EISSN: 1735-3645</identifier><identifier>DOI: 10.29252/jafm.12.05.29335</identifier><language>eng</language><publisher>Isfahan: Isfahan University of Technology</publisher><subject>Aspect ratio ; Fluid flow ; Holes ; Rarefied gas dynamics; DSMC; OpenFOAM; MEMS/NEMS ; Rigidity ; Slip ; Velocity ; Vorticity</subject><ispartof>Journal of Applied Fluid Mechanics, 2019-09, Vol.12 (5), p.1575-1583</ispartof><rights>2019. This work is published under http://creativecommons.org/licenses/by-nc-nd/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c382t-a25e7add62d1c5e1ef0b9b84b6cc283cc271477c39fc889f2dfbde865a3ebcd83</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,864,27924,27925</link.rule.ids></links><search><creatorcontrib>Mukherjee, S.</creatorcontrib><creatorcontrib>Shahabi, V.</creatorcontrib><creatorcontrib>Gowtham, R.</creatorcontrib><creatorcontrib>Rajan, K. S.</creatorcontrib><creatorcontrib>Velamati, R. 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Lid velocity tends to shift the central vortex to the top left of the cavity for a cavity with aspect ratio of one and shifts the upper vortex to the top left of the cavity for a cavity with aspect ratio of two. Lid velocity does not affect the slip to a great extent on the lid. 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| subjects | Aspect ratio Fluid flow Holes Rarefied gas dynamics DSMC OpenFOAM MEMS/NEMS Rigidity Slip Velocity Vorticity |
| title | Effect of Knudsen Number, Lid Velocity and Velocity Ratio on Flow Features of Single and Double Lid Driven Cavities |
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