High Speed Imaging Reveals a Close Resemblance Between Drop Impacts on a Solid Surface and the Interaction of a Cold Droplet Placed Inside a Hot Liquid

Proceedings of the 7th International and 45th National Conference on Fluid Mechanics and Fluid Power (FMFP) December 10-12, 2018, IIT Bombay, Mumbai, India

4 Pages Posted: 1 May 2019

See all articles by Ashish Karn

Ashish Karn

University of Petroleum and Energy Studies, Dehradun

Shashank S Deo

University of Petroleum and Energy Studies (UPES)

Sri Ragunath V

University of Petroleum and Energy Studies (UPES)

Abhay Kumar

University of Petroleum and Energy Studies (UPES)

Rohan De

University of Minnesota - Minneapolis

Date Written: December 10, 2018

Abstract

The phenomenon of drop impacts on a solid surface and the interaction of a cold droplet with a hot liquid pool are both of great relevance in many practical and engineering situations. Most of the reported research in the literature on these phenomena focus either on the impact of a droplet on a solid surface or a liquid surface and there are hardly any study on the interaction of a stationary cold droplet with a hot pool of liquid. This study reports high speed flow visualization of a drop impact on a Teflon-coated solid surface at different liquid properties and impact Reynolds number. Simultaneously, high speed imaging of the interaction of a cold droplet with the hot olive oil pool has also been carried out with a high intensity continuous light source. The images show a striking resemblance between the flow dynamics of the two phenomena. A comparison between the two phenomena is made and suggestions are made for the possible underlying physics.

Keywords: Drop Impact, Vapor Explosions, High Speed Imaging, Splashing, Crown Formation

Suggested Citation

Karn, Ashish and Deo, Shashank S and V, Sri Ragunath and Kumar, Abhay and De, Rohan, High Speed Imaging Reveals a Close Resemblance Between Drop Impacts on a Solid Surface and the Interaction of a Cold Droplet Placed Inside a Hot Liquid (December 10, 2018). Proceedings of the 7th International and 45th National Conference on Fluid Mechanics and Fluid Power (FMFP) December 10-12, 2018, IIT Bombay, Mumbai, India . Available at SSRN: https://ssrn.com/abstract=3363032 or http://dx.doi.org/10.2139/ssrn.3363032

Ashish Karn (Contact Author)

University of Petroleum and Energy Studies, Dehradun ( email )

Energy Acres
P.O. Bidholi via Premnagar,
Dehradun, IN Uttarakhand 248007
India

HOME PAGE: http://umn.edu/~karn

Shashank S Deo

University of Petroleum and Energy Studies (UPES) ( email )

Energy Acres
P.O. Bidholi via Premnagar,
Dehradun, IN Uttarakhand 248007
India

Sri Ragunath V

University of Petroleum and Energy Studies (UPES) ( email )

Energy Acres
P.O. Bidholi via Premnagar,
Dehradun, IN Uttarakhand 248007
India

Abhay Kumar

University of Petroleum and Energy Studies (UPES)

Energy Acres
P.O. Bidholi via Premnagar,
Dehradun, IN Uttarakhand 248007
India

Rohan De

University of Minnesota - Minneapolis ( email )

110 Wulling Hall, 86 Pleasant St, S.E.
308 Harvard Street SE
Minneapolis, MN 55455
United States

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