Interface measurement technique for liquid film flowing inside small grooves by laser induced fluorescence

Abstract During the recent past, an optical investigation method of liquid films flowing within grooves of small dimensions, was developed by our research team. This non-intrusive method, based on the visualization of a transverse flow section, uses the laser induced fluorescence and image processing techniques in order to characterize the geometry of the liquid–gas interface. This article proposes to describe the principle and the practical application of this method and to present its possibilities through a certain number of applications carried out within our laboratory on isothermal flows and two-phase flows running in small grooves.

[1]  Tohru Fukano.  Measurement of time varying thickness of liquid film flowing with high speed gas flow by a constant electric current method (CECM) , 1998 .

[2]  Ty A. Newell,et al.  Automated optical liquid film thickness measurement method , 1998 .

[3]  W. H. Stevenson,et al.  Thin Flowing Liquid Film Thickness Measurement by Laser Induced Fluorescence , 1992 .

[4]  Ulrich Renz,et al.  Heat transfer and film thickness during condensation of steam flowing at high velocity in a vertical pipe , 1992 .

[5]  R. Webb,et al.  Prediction of film condensation on vertical finned plates and tubes: a model for the drainage channel , 1990 .

[6]  J. Buchlin,et al.  An extra-thin light sheet technique used to investigate meniscus shapes by laser induced fluorescence , 1994 .

[7]  H. Kawano,et al.  Generation of a Disturbance Wave on a Liquid Film Flowing Down a Heated Inclined Plane , 1992 .

[8]  P. J. Marto.  An Evaluation of Film Condensation on Horizontal Integral-Fin Tubes , 1988 .

[9]  I. Mudawar,et al.  SIMULTANEOUS MEASUREMENTS OF THICKNESS AND TEMPERATURE PROFILE IN A WAVY LIQUID FILM FALLING FREELY ON A HEATING WALL , 1991 .

[10]  Hiroshi Honda,et al.  A Theoretical Model of Film Condensation in a Bundle of Horizontal Low Finned Tubes , 1989 .

[11]  Ralph L. Webb,et al.  An Analytical Model to Predict Condensate Retention on Horizontal Integral-Fin Tubes , 1985 .

[12]  H. Masuda,et al.  Static configuration of liquid films on horizontal tubes with low radial fins: implications for condensation heat transfer , 1987, Proceedings of the Royal Society of London. A. Mathematical and Physical Sciences.

[13]  R. Webb,et al.  Prediction of film condensation on horizontal integral fin tubes , 1990 .