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. © 2002 Elsevier Science Ltd. All rights reserved.
Desevaux, P., Homescu, D., Panday, P. K., & Prenel, J. P. (2002). Interface measurement technique for liquid film flowing inside small grooves by laser induced fluorescence. Applied Thermal Engineering, 22(5), 521–534. https://doi.org/10.1016/S1359-4311(01)00105-3