Assessment of CFD Codes Used in Nuclear Reactor Safety Simulations

Fluent analysis of a ROSA cold leg stratification test

“…Due to the important 3D effects, these phenomena cannot be predicted with thermal hydraulic systems codes: a realistic description of the mixing process can only be expected from CFD codes. In a recent OECD survey (Smith, 2008) PTS is listed among the relevant safety issues and available test data as well as recent analyses are reviewed.…”

Flow around Nuclear rod bundles' simulations based on RANS and LES method respectively

“…Although CFD has been used as a tool for analysis of reactor systems for more than 35 years [5], the spread use of CFD for designing a reactor is still limited. Whether the results of CFD simulation are accurate, it is still always in doubt.…”

Combined Analytical and Experimental Investigations for LWR Containment Phenomena

“…• Molten core concrete interaction module (MCCI) For more detailed analyses and assessments, Computational Fluid Dynamics (CFD) are used more widely in nuclear reactor safety issues in order to describe three-dimensional flow and transport processes [4,5]. Although LP codes maintain an important role in the integral investigation of accident scenarios, there are a number of unresolved issues which require the detailed knowledge of 3D and transient flow and transport processes.…”