ENTRANCE REGION FLOW OF FALLING LIQUID FILMS IN INCLINED WETTED-WALL COLUMNS WITH AN OVERFLOW-TYPE DISTRIBUTOR

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

TAKAHIRO NAKAI¹  KOSAKU ISHIMI¹  HARUO HIKITA¹  SADATOSHI KOROYASU¹ 

[1] Department of Chemical Engineering, University of Osaka Prefecture

关键词: Fluid Mechanics;    Liquid Film Thickness;    Velocity Profile;    Wetted Wall Column;    Entrance Region;    Inclined Plate;   

DOI  :  10.1252/jcej.20.172

来源: Maruzen Company Ltd

【 摘 要 】

References(6)Cited-By(1)Entrance region flow of falling liquid films in inclined wetted-wall columns with an overflow-type distributor was investigated theoretically and experimentally. The equations of motion based on boundary layer approximations were solved for the wave-free laminar flow of falling liquid films and a numerical solution was obtained for the dimensionless thickness of the falling liquid film, i.e., the Galileo number as a function of the liquid Reynolds number, the dimensionless distance in flow direction, and the angle of inclination of the wetted-wall plate. The liquid film thicknesses of water and aqueous sucrose solutions on inclined wetted-wall plates were measured and compared with theoretical predictions. The agreement between experimental data and theoretical predictions was fairly good in the wave-free entrance region of the falling liquid films.

【 授权许可】

Unknown