Shedding of Oil Drops From a Glass Surface Due to Water Cross Flow

4 Pages Posted: 12 Feb 2018

See all articles by Lukesh Kumar Mahato

Lukesh Kumar Mahato

Indian Institute of Technology, Dhanbad

Rahul Goswami

Indian Institute of Technology, Dhanbad

Deepak kumar Mandal

Indian Institute of Technology, Dhanbad

Date Written: October 23, 2017

Abstract

The shedding of silicon oil drops from a glass surface due to water cross flow is presented. The surface was placed inside a rectangular channel filled with water, and on top of the surface a drop of given size was placed. Various sizes of the drops were used for the experiment. The flow of water was gradually increased so that the drop sheds when the drag and the adhesion balance each other. The cross-flow velocity of water at that point was called the critical velocity. The critical velocity was found to decrease with increase in drop size. The contact lengths and heights were found to increase with the drop size. The increase in the contact length increases the adhesion, but the increase in height raises the drag applied. Hence the critical velocity decreases.

Keywords: Adhesion, Contact Angle, Critical Velocity, Drag, Sessile Drop, Shedding

Suggested Citation

Mahato, Lukesh Kumar and Goswami, Rahul and Mandal, Deepak kumar, Shedding of Oil Drops From a Glass Surface Due to Water Cross Flow (October 23, 2017). International Conference on Advances in Thermal Systems, Materials and Design Engineering (ATSMDE2017). Available at SSRN: https://ssrn.com/abstract=3101280 or http://dx.doi.org/10.2139/ssrn.3101280

Lukesh Kumar Mahato (Contact Author)

Indian Institute of Technology, Dhanbad ( email )

Sardar Patel Nagar
Dhanbad, Jharkhand 826004
India

Rahul Goswami

Indian Institute of Technology, Dhanbad ( email )

Sardar Patel Nagar
Dhanbad, Jharkhand 826004
India

Deepak kumar Mandal

Indian Institute of Technology, Dhanbad ( email )

Sardar Patel Nagar
Dhanbad, Jharkhand 826004
India

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