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dc.contributor.supervisor Chatoorgoon, Vijay (Mechanical Engineering) Ormiston, Scott (Mechanical Engineering) en_US
dc.contributor.author Bergmann, Cale
dc.date.accessioned 2016-01-11T13:59:18Z
dc.date.available 2016-01-11T13:59:18Z
dc.date.issued 2015 en_US
dc.date.issued 2016 en_US
dc.identifier.citation C. Bergmann, S. J. Ormiston and V. Chatoorgoon, "Sensitivity Studies of SST Turbulence Model Parameters on the Prediction of 7-Rod Bundle Benchmark Experiments," in The 7th International Symposium on Supercritical Water-Cooled Reactors (ISSCWR7), Helsinki, Finland, 2015. en_US
dc.identifier.citation C. Bergmann, S. J. Ormiston and V. Chatoorgoon, "Sensitivity Studies of Shear Stress Transport Turbulence Model Parameters on the Prediction of Seven-Rod Bundle Benchmark Experiments," Journal of Nuclear Engineering and Radiation Sciences, vol. 2, no. 1, 2016. en_US
dc.identifier.uri http://hdl.handle.net/1993/31016
dc.description.abstract Vertical up-flow of supercritical fluid in the subchannel of a heated rod bundle was numerically simulated using the Computational Fluid Dynamics (CFD) codes ANSYS CFX and ANSYS FLUENT. A total of seven cases from three different sets of experiments were simulated. Three-dimensional steady-state predictions of fluid velocity, pressure, and temperature were made using five versions of two-equation RANS turbulence models with accompanying wall treatments. In addition, the temperature distribution in a solid region comprising a heater and sheathing was also computed in some cases. The k-epsilon turbulence model, implemented using CFX and scalable wall functions, provided the numerical results that have the smallest overall deviation from experimental results for three of the seven cases, and predicts the experimental data of the remaining four cases reasonably well, unlike other turbulence models that severely over-predict the experimental data for wall surface temperature. en_US
dc.publisher VTT Technical Research Centre of Finland Ltd en_US
dc.publisher ASME en_US
dc.subject Supercritical en_US
dc.subject Turbulence models en_US
dc.subject Rod bundles en_US
dc.subject Numerical en_US
dc.subject CFD en_US
dc.subject CFX en_US
dc.subject FLUENT en_US
dc.subject Heat transfer deterioration en_US
dc.title Comparison of turbulence model predictions in rod bundles with supercritical up-flow en_US
dc.degree.discipline Mechanical Engineering en_US
dc.contributor.examiningcommittee Wang, Bing-Chen (Mechanical Engineering) Hollaender, Hartmut (Civil Engineering) en_US
dc.degree.level Master of Science (M.Sc.) en_US
dc.description.note February 2016 en_US


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