Numerical analysis of thermal-hydraulic behaviors in SI system

CFD is expected to have a major role to play in optimizing the design of steam injector. However, it is very difficult to simulate hydraulic phenomena in the stream injector because it contains various kinds of problems such as complicated geometries, multiphase flow, free surface, phase change and turbulence. Therefore, for the purpose of numerically simulating thermal hydraulic phenomena in steam injector system, we have developed a new code introducing advanced CFD techniques such as CIVA and T-CUP. The code utilized the temperature recovering method for the phase change modeling. For verifying the code, we simulated 2D film boiling of hydrogen. Then, we numerically analyzed 3D thermal hydraulic phenomena in steam injectors and compared the results with the experimental data. (author)