Void fraction in parallel channel boiling water reactors with application to two-phase turbulent mixing
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Authors
Reese, Ronald Malcolm
Subjects
Advisors
Mikic, Borivoje B.
Date of Issue
1970-06
Date
June 1970
Publisher
Massachusetts Institute of Technology
Language
Abstract
An experiment using air-water mixtures to model steam-water flow in a reactor was devised to determine the turbulent mixing mass flow rates between two multichannels over a wide range of flow conditions and therefrom predict turbulent mixing occurring in the reactor. An experimental apparatus was constructed for this experiment. Void fraction was chosen as a plausible correlating parameter for turbulent mixing and was measured together with axial pressure gradient for two subchannel geometries of interest. The subchannel geometries investigated were those found in a typical BWR fuel bundle. the flow regime in the subchannels was detected by means of an electric conductivity probe and visual observation. Date obtained are compared with various correlations. Predictions of void fraction and pressure gradient with the Lockhart-Martinelli correlation agreed closely with the data. Comparisons were also made with Griffith's slug flow model, and with the Cravarolo-Hassid and Marchaterre-Hoglund void fraction correlations.
Type
Thesis
Description
This thesis document was issued under the authority of another institution, not NPS. At the time it was written, a copy was added to the NPS Library collection for reasons not now known. It has been included in the digital archive for its historical value to NPS. Not believed to be a CIVINS (Civilian Institutions) title.
Series/Report No
Department
Naval Architecture and Marine Engineering
Organization
Massachusetts Institute of Technology