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Langmuir 미끄럼 경계조건을 이용한 미소 박리유동의 예측
이도형,맹주성,최형일,나욱상,Lee, Do-Hyung,Meang, Joo-Sung,Choi, Hyung-Il,Na, Wook-Sang 대한기계학회 2003 大韓機械學會論文集B Vol.27 No.8
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.