Studying the structure of the hydrogen-sodium two-phase flow

Quantitative characteristics of the structure of the sodium-hydrogen two-phase flow formed in the reaction between water and sodium in a tube of counterflow steam generator, which are essential for calculation of the reaction solid product crystallization on the tube wall and determination of hydrogen release to the cover gas are investigated. An approximate model of the two-phase flow structure, including the exponential bubble size distribution parameter and coagulation constant which are determined experimentally, is proposed. Calculations according to the programm developed, using this model approximate experimental results on hydrogen release to the cover gas during water supply into the tube 16 mm in diameter about 10 m long in the range of two-phase flow rates of 2-7.5 m/s and volume gas contents of 1-80% with accuracy of about 20%