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http://dx.doi.org/10.3795/KSME-B.2003.27.8.1097

Predictions of Microscale Separated Flow using Langmuir Slip Boundary Condition  

Lee, Do-Hyung (한양대학교 기계정보경영공학부)
Meang, Joo-Sung (한양대학교 기계공학부)
Choi, Hyung-Il (한양대학교 기계기술연구소)
Na, Wook-Sang (한양대학교 대학원 기계공학과)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.27, no.8, 2003 , pp. 1097-1104 More about this Journal
Abstract
The current study analyzes Langmuir slip boundary condition theoretically and it is tested in practical numerical analysis for separation-associated flow. Slip phenomenon at the channel wall is properly implemented by various numerical slip boundary conditions including Langmuir slip model. Compressible backward-facing step flow is compared to other analysis results with the purpose of diatomic gas Langmuir slip model validation. The numerical solutions of pressure and velocity distributions where separation occurs are in good agreement with other numerical results. Numerical analysis is conducted for Reynolds number from 10 to 60 for a prediction of separation at T-shaped micro manifold. Reattachment length of flows shows nonlinear distribution at the wall of side branch. The Langmuir slip model predicts fairly the physics in terms of slip effect and separation.
Keywords
MEMS; Slip Flow; Rarefaction; Slip Boundary Condition; Microchannel;
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Times Cited By KSCI : 1  (Citation Analysis)
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