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2001•Journal of the Visualization Society of JapanOpen access

A Study of a Low Reynolds Number Flow over a Backward Facing Step

Masato Takai, Takashi Ogawa, Shinji Honami

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Abstract

A study on flow around the micro device is strongly required in MEMS development. The objective of this paper is to study dependence of Reynolds number on reattachment process over a backward-facing step in low Reynolds number flow. The Reynolds number based on step height H is 190930 and vortex structure was observed by Digital Video Camera (DV Camera) in a Micro Sensing Wind Tunnel which was constructed in the present research program. The transition vortex structure is observed depending on Reynolds number.

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A study on flow around the micro device is strongly required in MEMS development. The objective of this paper is to study dependence of Reynolds number on reattachment process over a backward-facing step in low Reynolds number flow. The Reynolds number based on step height H is 190930 and vortex structure was observed by Digital Video Camera (DV Camera) in a Micro Sensing Wind Tunnel which was constructed in the present research program. The transition vortex structure is observed depending on Reynolds number.

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Available abstract

A study on flow around the micro device is strongly required in MEMS development. The objective of this paper is to study dependence of Reynolds number on reattachment process over a backward-facing step in low Reynolds number flow. The Reynolds number based on step height H is 190930 and vortex structure was observed by Digital Video Camera (DV Camera) in a Micro Sensing Wind Tunnel which was constructed in the present research program. The transition vortex structure is observed depending on Reynolds number.

Key concepts: Reynolds number, Wind tunnel, Vortex, Reynolds decomposition, Reynolds equation, Flow (mathematics), Mechanics, Magnetic Reynolds number

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