Evaluation of Countercurrent Gas/Liquid Flow in Parallel Channels with Restricted Ends

Countercurrent gas/liquid flow is examined in parallel channels interconnecting with upper and lower plenums at the upper and lower entries of a reactor core, respectively. The factors controlling the counter-current flow behavior in a single channel and multiple channels are evaluated and a method to predict flow patterns in multiple channels is developed. Experiments in five parallel channels are conducted and show close agreement between predicted and experimental results.