CTF Void Drift Validation Study

Technical Report · Mon Oct 26 00:00:00 EDT 2015

DOI:https://doi.org/10.2172/1342656· OSTI ID:1342656

Salko, Robert K. ^[1]; Gosdin, Chris ^[2]; Avramova, Maria N. ^[1]; Gergar, Marcus ^[2]

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1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
2. Pennsylvania State Univ., University Park, PA (United States)

This milestone report is a summary of work performed in support of expansion of the validation and verification (V&V) matrix for the thermal-hydraulic subchannel code, CTF. The focus of this study is on validating the void drift modeling capabilities of CTF and verifying the supporting models that impact the void drift phenomenon. CTF uses a simple turbulent-diffusion approximation to model lateral cross-flow due to turbulent mixing and void drift. The void drift component of the model is based on the Lahey and Moody model. The models are a function of two-phase mass, momentum, and energy distribution in the system; therefore, it is necessary to correctly model the ow distribution in rod bundle geometry as a first step to correctly calculating the void distribution due to void drift.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Consortium for Advanced Simulation of LWRs (CASL)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1342656
• Report Number(s): ORNL/TM-2015/641; NT0304000; NEAF343; ORNL/SR-2015/641
• Country of Publication: United States
• Language: English

Related Subjects

97 MATHEMATICS AND COMPUTING