Experimental investigation of dynamic binary collision of ethanol droplets – a model for droplet coalescence and bouncing

Autor:	G. Lavergne, J.-P. Estrade, Hervé Carentz, Y. Biscos
Rok vydání:	1999
Předmět:	Physics::Fluid Dynamics Fluid Flow and Transfer Processes Coalescence (physics) Droplet coalescence Optics Materials science business.industry Mechanical Engineering Binary number Mechanics Condensed Matter Physics Collision business
Zdroj:	International Journal of Heat and Fluid Flow. 20:486-491
ISSN:	0142-727X
DOI:	10.1016/s0142-727x(99)00036-3
Popis:	Binary droplet collisions are studied by means of an experimental set-up, which permits one to obtain accurate measurements (within 10% error) of droplet number, sizes and velocities. Ethyl alcohol droplet collisions have been investigated for distinct diameter ratios Δ=1 and Δ=0.5. Different domains of collision outcome are brought out. Transition curves in the literature are compared to the present experimental data. A new theoretical prediction of bouncing is proposed and compared with experimental values. Quantitative measurements of droplet velocities after impact are also obtained. A model to predict droplet velocities for coalescence and bouncing is presented. Droplet sizes and velocities when separation occurs are also given and discussed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::89626ff6f91821e019a48ac5dfc1f643 https://doi.org/10.1016/s0142-727x(99)00036-3 Zobrazit plný text záznamu Full Text from ScienceDirect