Development of a three-dimensional two-fluid code with transient neutronic feedback for LWR applications
Name
EL_TR_1981_013.pdf
Size
2.82 MB
Format
Adobe PDF
Checksum (MD5)
474d7f63f37a57fbfc48b738fdeacb95
Author(s)
Griggs, D. P.
Henry, Allan F.
Kazimi, Mujid S.
Date Issued
1981
Publisher
Cambridge, Mass. : Massachusetts Institute of Technology, Energy Laboratory, 1981
Series/Report no.
Energy Laboratory report (Massachusetts Institute of Technology. Energy Laboratory) no. MIT-EL 81-013.
Abstract
The development of a three-dimensional coupled neutronics/thermalhydraulics code for LWR safety analysis has been initiated. The transient neutronics code QUANDRY has been joined to the two-fluid thermal-hydraulics code THERMIT with the appropriate feedback mechanisms modeled. A literature review of the existing coupled neutronics/thermal-hydraulics codes is presented. It indicates that all of the known codes have limitations in their neutronic and/or thermal-hydraulic models which limit their generality of application and accuracy. It was also found that a tandem coupling scheme was most often employed and generally performed well. A detailed steady-state and transient coupling scheme based on the tandem technique was devised, taking into account the important operational characteristics of QUANDRY and THERMIT. The two codes were combined and the necessary programming modifications were performed to allow steady-state calculations with feedback. A simple steady-state sample problem was produced for the purpose of testing and debugging the coupled code.
Subjects
Light water reactors.
Nuclear fuel elements
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