Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
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Predictions of Microscale Separated Flow using Langmuir Slip Boundary Condition

Langmuir 미끄럼 경계조건을 이용한 미소 박리유동의 예측

  • 이도형 (한양대학교 기계정보경영공학부) ;
  • 맹주성 (한양대학교 기계공학부) ;
  • 최형일 (한양대학교 기계기술연구소) ;
  • 나욱상 (한양대학교 대학원 기계공학과)
  • Published : 2003.08.01
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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.

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References

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