TY  - EJOU
AU  - Kalantari, Davood  
AU  - Tropea, Cameron  

TI  - Liquid Spray Impact onto Flat and Rigid Walls: Formation and Spreading of Accumulated Wall Film
T2  - Fluid Dynamics \& Materials Processing

PY  - 2014
VL  - 10
IS  - 1
SN  - 1555-2578

AB  - This study presents a combined experimental and theoretical investigation on the formation and spreading of a liquid film on a flat and rigid wall due to spray impact. A dual-mode phase Doppler instrument is used to characterise the spray while the average film thickness is measured using a high-speed CCD camera. The experimental results are complemented with theoretical expressions derived under the assumption that the spray is stationary. A new model for the prediction of the average wall film thickness is formulated taking into account the mean Reynolds number of the impacting drops, the flux density of the impacting droplets, and the average drop diameter. The theoretically determined average film thickness exhibits a good agreement with the measured data when the film can be considered thin.
KW  - spray
KW  -  spray impact
KW  -  wall film
KW  -  film thickness
KW  -  Phase Doppler

DO  - 10.3970/fdmp.2014.010.037