Download or read book Impact and Freezing of Molten Tin Droplets on a Solid Surface written by Rabindra Bhola and published by . This book was released on 1997 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The collision and freezing of molten tin droplets on a surface was studied. The objectives of this work were: first to examine the effect of substrate temperature, substrate material, and substrate geometry on droplet impact dynamics; second, to measure surface temperature variation during impact to estimate the thermal contact resistance at the droplet/substrate interface; and finally, to propose an analytical model to estimate solidification effect on the maximum droplet spread. Impacts on a stainless steel surface set at different temperatures showed significant effect of solidification on droplet impact; solidification restricted droplet motion, particularly in recoil. Substrate material had a less dramatic effect on droplet impact dynamics. The model of maximum spread with the effect of solidification agreed well with the experiments. Results of the images impacting on the step and incline surfaces showed complex fluid flow which can only be simulated by a numerical model.