Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/74781
Title: Viscoelastic droplet impact on surface
Authors: Ho, Yenn Shen
Keywords: DRNTU::Engineering
Issue Date: 2018
Abstract: This report investigates the viscoelastic effect on the spreading of droplet after impacting on a dry surface through the using of high-speed imaging techniques (SA-X2, Photron). Different viscoelastic fluids were used by adding PEO (Sigma Aldrich) of varying molecular weight and concentration to distilled water. The impact behaviour of the droplets was observed and analysed using the spreading images captured by the camera. Spreading diameter of Newtonian and non-Newtonian (viscoelastic) droplets were obtained to find out the effect of varying molecular weight and concentration on the maximum spreading diameter. From the analysis, an increase in molecular weight and/or concentration of the viscoelastic droplets resulted in smaller maximum spreading diameters. From this understanding, attempts were made to scale the spread factor of the sample solutions to a single characteristic curve to obtain a prediction model for the maximum spreading diameter of viscoelastic fluid.
URI: http://hdl.handle.net/10356/74781
Schools: School of Mechanical and Aerospace Engineering 
Rights: Nanyang Technological University
Fulltext Permission: restricted
Fulltext Availability: With Fulltext
Appears in Collections:MAE Student Reports (FYP/IA/PA/PI)

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