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...
| Main Authors: | , , , |
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| Format: | Proceeding Paper |
| Language: | English |
| Published: |
2011
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/7930/ http://irep.iium.edu.my/7930/1/Improving_the_Efficiency_of_Micronozzle_by_Heated_Sidewalls.pdf |
| _version_ | 1848776923096809472 |
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| 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 |
| building | IIUM Repository |
| collection | Online Access |
| 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. |
| first_indexed | 2025-11-14T14:37:48Z |
| format | Proceeding Paper |
| id | iium-7930 |
| institution | International Islamic University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T14:37:48Z |
| publishDate | 2011 |
| recordtype | eprints |
| repository_type | Digital Repository |
| 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 Proceeding Paper 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/ |
| spellingShingle | TJ163.13 Power resources Hameed, Amar Hasan Kafafy, Raed Asrar, Waqar Idres, Moumen Improving the efficiency of micronozzle by heated sidewalls |
| title | 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_short | Improving the efficiency of micronozzle by heated sidewalls |
| title_sort | improving the efficiency of micronozzle by heated sidewalls |
| topic | TJ163.13 Power resources |
| 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 |