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Drop impact on a solid surface comprising micro groove structure

Kannan, R and Sivakumar, D (2008) Drop impact on a solid surface comprising micro groove structure. In: 5th International Workshop on Complex Systems, SEP 25-28, 2007, Sendai.

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Spreading and receding processes of water drops impacting on a stainless steel surface comprising rectangular shaped parallel grooves are studied experimentally. The study was confined to the impact of drops in inertia dominated flow regime with Weber number in the range 15 - 257. Measurements of spreading drop diameter and drop height were obtained during the impact process as function of time. Experimental measurements of spreading drop diameter and drop height obtained for the grooved surface were compared with those obtained for a smooth surface to elucidate the influence of surface grooves on the impact process. The grooves definitely influence both spreading and receding processes of impacting liquid drops. A more striking observation from this study is that the receding process of impacting liquid drops is dramatically changed by the groove structure for all droplet Weber number.

Item Type: Conference Proceedings
Series.: AIP Conference Proceedings
Publisher: Amer Inst Physics
Additional Information: Copyright of this article belongs to Amer Inst Physics.
Department/Centre: Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited: 04 Jun 2010 06:16
Last Modified: 04 Jun 2010 06:16
URI: http://eprints.iisc.ac.in/id/eprint/26150

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