at the cross section were investigated under both regimes.
The experiments depict reasonable results, and the Nu based on center sub-channel shows an agreement
with empirical correlations. Besides, a special sub-channel code named SACOS-PB was employed to support the sub-channel analysis; and similar results to each other were obtained. It can be concluded that
the SACOS-PB is a reliable tool for LBE system sub-channel analysis. Based on the present work the comprehensive thermal-hydraulic analysis with a detailed test matrix in terms of different flow rates and
heating powers will be conducted in near future.