CTF Void Drift Validation Study [report]

Robert K. Salko, Chris Gosdin, Maria N. Avramova, Marcus Gergar
2015 unpublished
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
more » ... 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 flow distribution in rod bundle geometry as a first step to correctly calculating the void distribution due to void drift. Considering this, a stepwise approach is taken to validate the void drift model in CTF by ensuring
doi:10.2172/1342656 fatcat:rmnc4b5z4reevjgnsqbvndzokq