Implementation of velocity slip and temperature jump boundary conditions for microfluidic devices

• Autorzy: Jebauer S. , Czerwińska J.
• Języki publikacji: EN

Abstrakty

EN

The motivation of this work is to obtain a simulation tool which will be capable of modelling simple micro-devices in the gas slip flow regime. To achieve this goal Maxwell Smoluchowski boundary conditions were implemented by means of a udf routine into the commercial fluid finite volume solver Fluent. The applied velocity slip and temperature jump boundary condition are varied for small Knudsen numbers Kn < 0.1. In this regime there are several industrial applications such as micro-electro-mechanical systems (MEMS), heat exchange on chips and boundary layer problems for aerospace and turbomachinery applications. This report shows how the boundary condition implementation was done and is applied to a number of test cases: flow through a rectangular channel, Couette flow between two cylindrical surfaces, thermal creep flowr between two heated tanks, flowr through a bended diverging channel, a box heated with different wall temperatures and a vortex pattern flow between cylindrical surfaces heated with different temperatures.

Słowa kluczowe

PL

mechanika płynów

• Wydawca: Instytut Podstawowych Problemów Techniki PAN
• Czasopismo: Prace Instytutu Podstawowych Problemów Techniki PAN
• Rocznik: 2007
• Tom: nr 5
• Strony: 1--50
• Opis fizyczny: Bibliogr. 17 poz.

Twórcy

autor

Jebauer S.

autor

Czerwińska J.

Bibliografia

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