Improving the efficiency of micronozzle by heated sidewalls

Heat developing by electrical field within a uniform side wall of micronozzle is established and its effect on nozzle flow parameters is tested. The continuum two-dimensional flow analysis of gas and one dimensional thermal analysis of the uniform sidewall are solved numerically and simultaneously...

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Main Authors:	Hameed, Amar Hasan, Kafafy, Raed, Asrar, Waqar, Idres, Moumen
Format:	Conference or Workshop Item
Language:	English
Published:	2011
Subjects:	TJ163.13 Power resources
Online Access:	http://irep.iium.edu.my/7930/ http://irep.iium.edu.my/7930/ http://irep.iium.edu.my/7930/1/Improving_the_Efficiency_of_Micronozzle_by_Heated_Sidewalls.pdf

id	iium-7930
recordtype	eprints
spelling	iium-79302011-11-23T07:37:11Z http://irep.iium.edu.my/7930/ Improving the efficiency of micronozzle by heated sidewalls Hameed, Amar Hasan Kafafy, Raed Asrar, Waqar Idres, Moumen TJ163.13 Power resources Heat developing by electrical field within a uniform side wall of micronozzle is established and its effect on nozzle flow parameters is tested. The continuum two-dimensional flow analysis of gas and one dimensional thermal analysis of the uniform sidewall are solved numerically and simultaneously for different configurations of heat supplying. Heat developing in the convergent-divergent sidewall shows improvement of thrust level and specific impulse due to an increase in both density and pressure at the exit section, although there is a degradation of Mach number and velocity and increase in the thickness of the subsonic boundary layer. Heat generation rate can be increased under limitations of the base metal structural properties .It is observed that heat exchange at convergent and divergent sections is more effective than preheating at the straight section before the entrance of the nozzle. It is found that; choosing the inlet boundary condition at the starting point of convergence shows additional pressure losses due to hard turning of streamlines of the uniform velocity exits from a the gas chamber. Hence, shifting the inlet boundary condition upstream the nozzle is necessary to get fully developed flow entering the nozzle with smoother turning of streamlines, and to reduce pressure losses. 2011 Conference or Workshop Item PeerReviewed application/pdf en http://irep.iium.edu.my/7930/1/Improving_the_Efficiency_of_Micronozzle_by_Heated_Sidewalls.pdf Hameed, Amar Hasan and Kafafy, Raed and Asrar, Waqar and Idres, Moumen (2011) Improving the efficiency of micronozzle by heated sidewalls. In: 4th International Meeting of Advances in Thermofluids (IMATT 2011), 3-4th October 2011, Hotel Avillion Legacy, Melaka. http://seminar.utmspace.utm.my/imat2011/
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English
topic	TJ163.13 Power resources
spellingShingle	TJ163.13 Power resources Hameed, Amar Hasan Kafafy, Raed Asrar, Waqar Idres, Moumen Improving the efficiency of micronozzle by heated sidewalls
description	Heat developing by electrical field within a uniform side wall of micronozzle is established and its effect on nozzle flow parameters is tested. The continuum two-dimensional flow analysis of gas and one dimensional thermal analysis of the uniform sidewall are solved numerically and simultaneously for different configurations of heat supplying. Heat developing in the convergent-divergent sidewall shows improvement of thrust level and specific impulse due to an increase in both density and pressure at the exit section, although there is a degradation of Mach number and velocity and increase in the thickness of the subsonic boundary layer. Heat generation rate can be increased under limitations of the base metal structural properties .It is observed that heat exchange at convergent and divergent sections is more effective than preheating at the straight section before the entrance of the nozzle. It is found that; choosing the inlet boundary condition at the starting point of convergence shows additional pressure losses due to hard turning of streamlines of the uniform velocity exits from a the gas chamber. Hence, shifting the inlet boundary condition upstream the nozzle is necessary to get fully developed flow entering the nozzle with smoother turning of streamlines, and to reduce pressure losses.
format	Conference or Workshop Item
author	Hameed, Amar Hasan Kafafy, Raed Asrar, Waqar Idres, Moumen
author_facet	Hameed, Amar Hasan Kafafy, Raed Asrar, Waqar Idres, Moumen
author_sort	Hameed, Amar Hasan
title	Improving the efficiency of micronozzle by heated sidewalls
title_short	Improving the efficiency of micronozzle by heated sidewalls
title_full	Improving the efficiency of micronozzle by heated sidewalls
title_fullStr	Improving the efficiency of micronozzle by heated sidewalls
title_full_unstemmed	Improving the efficiency of micronozzle by heated sidewalls
title_sort	improving the efficiency of micronozzle by heated sidewalls
publishDate	2011
url	http://irep.iium.edu.my/7930/ http://irep.iium.edu.my/7930/ http://irep.iium.edu.my/7930/1/Improving_the_Efficiency_of_Micronozzle_by_Heated_Sidewalls.pdf
first_indexed	2023-09-18T20:17:28Z
last_indexed	2023-09-18T20:17:28Z
_version_	1777407883814633472

Improving the efficiency of micronozzle by heated sidewalls

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