Study on the size of secondary droplets generated owing to rupture of liquid film on corrugated plate wall

Abstract

Corrugated plate dryer is a kind of steam-water separation equipment commonly used in nuclear power plants. Therefore, there are many heat and mass transfer phenomena in the corrugated plate dryer. In this paper, the relative height of liquid film rupture in the corrugated plate under different Reynolds numbers is experimentally studied by PLIF method. The equation for calculating the relative height of liquid film is given. Specific position and shape of the liquid film rupture under the horizontal shear of airflow is theoretically derived. Calculation equation of the size of secondary droplet. Based on PLIF method, the size of the secondary droplet generated after liquid film is broken is measured. Conclusions show that results calculated by the fitted equation of relative height of liquid film rupture are in good agreement with the experimental results. At the small and medium Reynolds number regions (Re < 2788), theoretical results of the secondary droplet size are in very good agreement with experimental results.