Dynamic behavior in a liquid pool with different particle beds was experimentally studied to model the mobility of a disrupted core with rich solid phases. Experimental analysis was performed to verify a reactor safety analysis code, SIMMER-III. Reasonable agreement was obtained with experimental behaviors of multiphase flows with rich solid particles.
A finite volume particle (FVP) method was applied to the dam-break problem with solid balls. Applicability of the present method was verified by comparison with experimental observations. The present results show that the FVP method can be a useful tool to analyze fluid-solid mixture flow problems.
Thermal-hydraulic performance was numerically analyzed for a super critical carbon dioxide - water heat exchanger PCHE type (Printed Circuit Heat Exchanger) by using the commercial computational fluid dynamics code FLUENT 6.2.16.
An advanced microchannel heat exchanger with S-shape fins has been compared with a conventional one with zigzag flow channel. The comparison was done both experimentally in a supercritical carbon dioxide (CO2) thermal-hydraulic loop and numerically using the FLUENT code.