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dc.contributor.supervisor Chatoorgoon, Vijay ( Mechanical Engineering) Ormiston, Scott (Mechanical Engineering) en_US
dc.contributor.author Ebrahimnia, Elaheh
dc.date.accessioned 2014-03-27T19:56:53Z
dc.date.available 2014-03-27T19:56:53Z
dc.date.issued 2014-03-27
dc.identifier.uri http://hdl.handle.net/1993/23345
dc.description.abstract A numerical study is performed to model the 2-D axisymmetric turbulent flow of supercritical water flowing upward in vertical pipes with constant wall heat fluxes, using ANSYS CFX v14.5. This study was aimed to use CFD in analyzing supercritical flow instability and heat transfer. Two types of flow instabilities are analyzed and results are compared with 1-D non-linear code solutions. Also, conditions for approximating the thresholds of instabilities based on steady-state results are assessed. It is determined that the results of instability thresholds obtained using the k-ɛ and the SST models are similar. Also the results of CFD and 1-D codes are different mainly due to the difference in the pressure drop predictions. Moreover, approximating the flow instability threshold by the conditions proposed holds true for a CFD solution. Results also indicate that Prt does not have a noticeable effect on the instability threshold for the cases examined. en_US
dc.subject Supercritical Flow en_US
dc.subject CFD en_US
dc.subject Instability Threshold en_US
dc.subject Turbulence Models en_US
dc.subject Turbulent Prandtl Number en_US
dc.title Numerical stability and heat transfer analyses of supercritical water flowing upward In vertical heated pipes en_US
dc.degree.discipline Mechanical and Manufacturing Engineering en_US
dc.contributor.examiningcommittee Wang, Bing-Chen ( Mechanical Engineering) Filizadeh, Shaahin ( Electrical & Computer Engineering) en_US
dc.degree.level Master of Science (M.Sc.) en_US
dc.description.note May 2014 en_US


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