One-dimensional analysis of unsteady flows due to supercritical heat addition in high speed condensing steam
Unsteadiness in supersonic flow in nozzles can be generated by the release of heat due to spontaneous condensation. The heat released is termed �supercritical� and may be responsible for turbine blades failure in turbine cascade as it causes a supersonic flow to decelerate. When the Mach number is r...
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my.uniten.dspace-300512023-12-29T15:44:11Z One-dimensional analysis of unsteady flows due to supercritical heat addition in high speed condensing steam Malek N.A. Hasini H. Yusoff M.Z. 36994735300 6507435998 7003976733 Turbines Droplet growth Governing equations Heat additions Numerical solution One-dimensional analysis Spontaneous condensation Turbine blade Turbine cascade conference proceeding experimental study heat flux numerical model one-dimensional modeling turbine unsteady flow Supersonic flow Unsteadiness in supersonic flow in nozzles can be generated by the release of heat due to spontaneous condensation. The heat released is termed �supercritical� and may be responsible for turbine blades failure in turbine cascade as it causes a supersonic flow to decelerate. When the Mach number is reduced to unity, the flow can no longer sustain the additional heat and becomes unstable. This paper aims to numerically investigate the unsteadiness caused by supercritical heat addition in one-dimensional condensing flows. The governing equations for mass, momentum and energy, coupled with the equations describing the wetness fraction and droplet growth are integrated and solved iteratively to reveal the final solution. Comparison is made with well-established experimental and numerical solution done by previous researchers that shows similar phenomena. � Published under licence by IOP Publishing Ltd. Final 2023-12-29T07:44:11Z 2023-12-29T07:44:11Z 2013 Conference paper 10.1088/1755-1315/16/1/012150 2-s2.0-84881110719 https://www.scopus.com/inward/record.uri?eid=2-s2.0-84881110719&doi=10.1088%2f1755-1315%2f16%2f1%2f012150&partnerID=40&md5=5dc4b1099d8367b33ef1c72489d66b91 https://irepository.uniten.edu.my/handle/123456789/30051 16 1 12150 All Open Access; Gold Open Access Institute of Physics Publishing Scopus |
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Turbines Droplet growth Governing equations Heat additions Numerical solution One-dimensional analysis Spontaneous condensation Turbine blade Turbine cascade conference proceeding experimental study heat flux numerical model one-dimensional modeling turbine unsteady flow Supersonic flow |
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Turbines Droplet growth Governing equations Heat additions Numerical solution One-dimensional analysis Spontaneous condensation Turbine blade Turbine cascade conference proceeding experimental study heat flux numerical model one-dimensional modeling turbine unsteady flow Supersonic flow Malek N.A. Hasini H. Yusoff M.Z. One-dimensional analysis of unsteady flows due to supercritical heat addition in high speed condensing steam |
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Unsteadiness in supersonic flow in nozzles can be generated by the release of heat due to spontaneous condensation. The heat released is termed �supercritical� and may be responsible for turbine blades failure in turbine cascade as it causes a supersonic flow to decelerate. When the Mach number is reduced to unity, the flow can no longer sustain the additional heat and becomes unstable. This paper aims to numerically investigate the unsteadiness caused by supercritical heat addition in one-dimensional condensing flows. The governing equations for mass, momentum and energy, coupled with the equations describing the wetness fraction and droplet growth are integrated and solved iteratively to reveal the final solution. Comparison is made with well-established experimental and numerical solution done by previous researchers that shows similar phenomena. � Published under licence by IOP Publishing Ltd. |
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36994735300 |
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36994735300 Malek N.A. Hasini H. Yusoff M.Z. |
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Conference paper |
author |
Malek N.A. Hasini H. Yusoff M.Z. |
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Malek N.A. |
title |
One-dimensional analysis of unsteady flows due to supercritical heat addition in high speed condensing steam |
title_short |
One-dimensional analysis of unsteady flows due to supercritical heat addition in high speed condensing steam |
title_full |
One-dimensional analysis of unsteady flows due to supercritical heat addition in high speed condensing steam |
title_fullStr |
One-dimensional analysis of unsteady flows due to supercritical heat addition in high speed condensing steam |
title_full_unstemmed |
One-dimensional analysis of unsteady flows due to supercritical heat addition in high speed condensing steam |
title_sort |
one-dimensional analysis of unsteady flows due to supercritical heat addition in high speed condensing steam |
publisher |
Institute of Physics Publishing |
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2023 |
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1806427304480473088 |