Research on reflux phenomenon of liquid film on the wall of corrugated plate dryer.

• Film lateral movement distance of the film reflux is measured by PLIF method. • The theoretical model of the distance of liquid film reflux is derived. • Theoretical and experimental results agree well for small and medium Reynolds number. The corrugated plate is a vital steam-water separation device in nuclear power plants. Research on steam-water separation mechanism and separation efficiency of corrugated plates has been a hot research direction. In this paper, the film lateral movement distance of the film reflux on the corrugated plate wall is measured by PLIF method. Based on experimental results, calculation equation of film lateral movement distance when the film reflux with good applicability is fitted. The degree of liquid film reflux is characterized by the lateral distance between the apex of the liquid film reflux profile and film mainstream. This parameter is defined as distance of liquid film reflux. Based on the law of conservation of mass, theoretical equation of distance of liquid film reflux is derived. Results show that theoretical results of distance of liquid film reflux agree well with experimental results in small and medium Reynolds number regions (Re < 2625). [ABSTRACT FROM AUTHOR]