Deformation behavior of a liquid droplet impinging onto a metal suiface heated at 400C is examined by means of high-speed photography. The maximum diameters if the radially flowing thin film at the bottom part of an impinging drop, 2Rmax and 2R bma x> the residence time at the heated suiface, 't c and heat-transmitting suifaces integrated over the residence time, 7T: Joc R ' dt and 7T: Joc R~dt, characteristic to the deformed droplet, are measured with aid qf an analyzer for high-speed cine films , which can be all described as functions of the dimensionless Weber number for droplets of water, ethanol and acetic acid. Results for the water droplet are also correlated with its momentum . It is shown that disintegration behavior upon impingement of droplets can not merely be defined with the W eber number and that liquid viscosity takes little part of the behavior.
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Akao et al. (1980) studied this question.