HTTR炉床部構造内における冷却材の混合実験および数値解析

抄録

Numerical and experimental studies were conducted to clarify the thermal mixing characteristics of a coolant in the core bottom structure (CBS) of the High Temperature engineering Test Reactor (HTTR) being developed in JAERI. The experimental Study was carried out using a one-seventh scale model of the CBS, and the numerical study was made using a three dimensional time-dependent flow and heat transfer code named STREAM. The numerical results were in good agreement with the experimental ones and it was confirmed that the STREAM code was able to use the prediction of the thermal mixing in the CBS of HTTR.