Title : ( Mass flow rate prediction of temperature-driven gas flows through divergence micro/nanochannels )
Authors: Ehsan Roohi , Mohammad Sajjad Mozaffari ,
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Abstract
This paper presents an investigation of the mass flow rate of rarefied gaseous flow in divergent micro/nano channels compared with the results of straight channels. Direct simulation Monte-Carlo (DSMC) method is used to solve rarefied flow over a broad range of Knudsen number accurately. We observed that the mass flow rate increases with the divergence angle. The effect of channel aspect ratio (AR) is not crucial on the mass flow rate in lower Knudsen numbers. However, the mass flow rate increases with the divergence angle when Knudsen number is high. We show that enhanced thermal creep effect is the main source of the mass flow rate increase if the wall temperature gradient is increased.
Keywords
, thermal creep, DSMC technique, divergence microchannels, mass flow rate
@inproceedings{paperid:1062951,
author = {Roohi, Ehsan and Mozaffari, Mohammad Sajjad},
title = {Mass flow rate prediction of temperature-driven gas flows through divergence micro/nanochannels},
booktitle = {بیست و پنجمین کنفرانس مکانیک},
year = {2017},
location = {تهران, IRAN},
keywords = {thermal creep-DSMC technique-divergence
microchannels- mass flow rate},
}
%0 Conference Proceedings
%T Mass flow rate prediction of temperature-driven gas flows through divergence micro/nanochannels
%A Roohi, Ehsan
%A Mozaffari, Mohammad Sajjad
%J بیست و پنجمین کنفرانس مکانیک
%D 2017
