Record Details

Investigation of Wall Effects on Flow Characteristics of a High Knudsen Number Nozzle

DSpace at IIT Bombay

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Field Value
 
Title Investigation of Wall Effects on Flow Characteristics of a High Knudsen Number Nozzle
 
Creator WATVISAVE, DS
BHANDARKAR, UV
PURANIK, BP
 
Subject micronozzle
rarefied flows
accommodation coefficients
wall effects
MONTE-CARLO METHOD
GAS-FLOWS
NUMERICAL-SIMULATION
TANGENTIAL MOMENTUM
MICRO-NOZZLE
ACCOMMODATION
PERFORMANCE
EXTENSIONS
 
Description Two-dimensional direct simulation Monte Carlo (DSMC) was used to investigate the effect of wall accommodation on different modes of operation of a nozzle under high Knudsen number conditions. Substantial performance enhancement was seen at higher values of convergingdiverging angles, because a reduction in the surface area-to-volume ratio decreased the wall effects. Though the normal energy accommodation had a negligible influence on the nozzle performance, it was seen to be a critical factor for accurate prediction of gas temperature along the wall. At higher Knudsen numbers, the flow tended to become one-dimensional even for the case of complete accommodation.
 
Publisher TAYLOR & FRANCIS INC
 
Date 2014-10-14T12:44:05Z
2014-10-14T12:44:05Z
2013
 
Type Article
 
Identifier NANOSCALE AND MICROSCALE THERMOPHYSICAL ENGINEERING, 17(2)124-140
http://dx.doi.org/10.1080/15567265.2012.760694
http://dspace.library.iitb.ac.in/jspui/handle/100/14436
 
Language en