5th European Conference on Microfluidics – μFlu18 3rd European Conference on Non-Equilibrium Gas Flows – NEGF18 , 2018-02-28

Title : ( KNUDSEN PUMP WITH SPECULAR AND DIFFUSE WALLS )

Authors: T. Baier , S. Hardt , Vahid Shahabi , Ehsan Roohi ,

Citation: BibTeX | EndNote

Abstract

Knudsen pumps transport gas by imposing a temperature profile onto a rarefied gas confined within a channel with structured walls. We investigate the influence of specularly reflecting wall segments on the pumping performance of two types of Knudsen pumps, where a temperature gradient is applied perpendicular to the channel direction. One configuration is inspired by a Crookes radiometer with blades, having different reflection properties on both sides, inserted into a channel. A second configuration features a channel with a flat hot wall opposing a cold wall with a saw-tooth structure possessing alternating diffusely and specularly reflecting segments. Both configurations are analyzed numerically using the Direct Simulation Monte Carlo method, and where available the results are compared to analytical solutions

Keywords

, Rarefied gas dynamics, thermally induced gas flow, Knudsen pump, Direct Simulation Monte Carlo (DSMC)
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@inproceedings{paperid:1067690,
author = {T. Baier and S. Hardt and Shahabi, Vahid and Roohi, Ehsan},
title = {KNUDSEN PUMP WITH SPECULAR AND DIFFUSE WALLS},
booktitle = {5th European Conference on Microfluidics – μFlu18 3rd European Conference on Non-Equilibrium Gas Flows – NEGF18},
year = {2018},
location = {استراسبورگ, french},
keywords = {Rarefied gas dynamics; thermally induced gas flow; Knudsen pump; Direct Simulation Monte Carlo (DSMC)},
}

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%0 Conference Proceedings
%T KNUDSEN PUMP WITH SPECULAR AND DIFFUSE WALLS
%A T. Baier
%A S. Hardt
%A Shahabi, Vahid
%A Roohi, Ehsan
%J 5th European Conference on Microfluidics – μFlu18 3rd European Conference on Non-Equilibrium Gas Flows – NEGF18
%D 2018

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