Related Researcher

Author's Photo

Jang, Jaesung
Sensors & Aerosols Lab
Research Interests
  • Multi-scale Sensor Systems for Biomedical and Industrial Applications
  • Bio-Aerosol and Aerosol Technology
  • Fundamental Gas and Liquid Flows in Microchannels
  • Electrical Particle & Fluid Manipulation


Effects of planar inlet plenums on the hydrodynamically developing flows in rectangular microchannels of complementary aspect ratios

DC Field Value Language Lee, Sang-Youp ko Jang, Jaesung ko Wereley, Steven T. ko 2014-10-17T00:12:38Z - 2014-10-16 ko 2008-07 -
dc.identifier.citation MICROFLUIDICS AND NANOFLUIDICS, v.5, no.1, pp.1 - 12 ko
dc.identifier.issn 1613-4982 ko
dc.identifier.uri -
dc.identifier.uri ko
dc.description.abstract The effects of planar inlet plenum geometry on the developing flow fields in two rectangular microchannels of reciprocal aspect ratios (H/W ∼2.75 and ∼0.40) were investigated for ReD = 1-100 using micro particle image velocimetry (μPIV). These two microchannels were made by a precision sawing and silicon microfabrication techniques. Both the velocity profiles and centerline velocity developments were clearly resolved and extracted along the axial distance from μPIV results. The entrance lengths were found from the centerline velocities using a decaying exponential fitting function where the centerline velocity reaches 99% of the fully developed centerline velocity. The proposed fitting function showed excellent agreement with the experimental results. The planar plenum was shown to cause an upstream predevelopment resulting in the significant reductions in the entrance lengths. Two entrance length correlations were proposed in the forms of Atkinson et al.'s (AIChE J 15:548-553, 1969) and Chen's (J Fluids Eng 95:153-158, 1973) correlations. The proposed entrance length correlations showed that acquired constant portion and slope of the entrance lengths showed 23-27 and 70-81% reductions for H/W = 2.75 while the entrance length correlation for H/W = 0.40 showed 69-73% increase and 41-63% decrease in the constant portion and slope, respectively. ko
dc.description.statementofresponsibility close -
dc.language ENG ko
dc.subject Aspect ratio of rectangular microchannel ko
dc.subject Entrance length ko
dc.subject Hydrodynamically developing flow ko
dc.subject Micro particle image velocimetry ko
dc.subject Rectangular microchannel ko
dc.title Effects of planar inlet plenums on the hydrodynamically developing flows in rectangular microchannels of complementary aspect ratios ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-44249089748 ko
dc.identifier.wosid 000256010500001 ko
dc.type.rims ART ko
dc.description.wostc 5 *
dc.description.scopustc 4 * 2015-05-06 * 2014-10-16 *
dc.identifier.doi 10.1007/s10404-007-0179-y ko
Appears in Collections:
MEN_Journal Papers

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show simple item record


  • mendeley


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.