Influence of the spacer location and the direct heating in the single and two phase region on the development of in-phase instabilities of boiling water reactors

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dc.contributor.author Munoz-Cobo, J.L. en
dc.contributor.author Escriva, F.A. en
dc.contributor.author Berna, C. en
dc.date.accessioned 2017-08-28T07:07:26Z
dc.date.available 2017-08-28T07:07:26Z
dc.date.issued 2016 en
dc.description Papers presented to the 12th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Costa de Sol, Spain on 11-13 July 2016. en
dc.description.abstract The dynamic of boiling flows can be considered as a complex problem where generally more than one instability mechanism is present. This problem of two-phase flow instabilities is found in a big variety of energy and chemical engineering systems such as the channels of Boiling Water Reactors (BWR), conventional steam boilers, and phase change heat exchangers used in the chemical industry. Among the different instability types, one of the most important for the nuclear engineering field is the in-phase instability that appears in boiling water reactors (BWR). In this instability type a synchronized oscillation of the power and the thermal-hydraulic variables is produced in all the channels of the reactor. This paper study the influence of the spacer location and the direct heating i.e. the heating of the boiling channels by neutron and gamma rays on the in-phase instabilities BWRs. en
dc.format.extent 6 pages en
dc.format.medium PDF en
dc.identifier.uri http://hdl.handle.net/2263/61848
dc.language.iso en en
dc.publisher HEFAT en
dc.rights University of Pretoria en
dc.subject Spacer location en
dc.subject Direct heating en
dc.subject Boiling water reactors en
dc.title Influence of the spacer location and the direct heating in the single and two phase region on the development of in-phase instabilities of boiling water reactors en
dc.type Presentation en


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