NDLI: Full-field spreading velocity measurement inside droplets impinging on a dry solid surface

Content Provider	Springer Nature Link
Author	Erkan, Nejdet Okamoto, Koji
Copyright Year	2014
Abstract	Liquid droplet impacts onto solid surfaces have attracted enormous amount of attention from wide range of research fields including experimental and numerical investigations. Unlike experimental efforts, numerical and analytical studies generated various sets of data. In this study, we investigated the spreading velocities inside the water droplets impinging onto a dry glass substrate using time-resolved PIV. The method, together with the high spatiotemporal resolution and the additional treatments improving the robustness, allowed us to resolve the radial velocity profiles efficiently in the spreading phase. Several impact velocity cases ranging from 0.40 to 0.96 m/s were studied. They correspond to low and moderate level Weber numbers (4.9–27.6). We observed that instantaneous radial velocity distributions exhibit linear and nonlinear modes. The nonlinearity is caused by the vortical flows formed at outer regions of the spreading liquid lamella. We demonstrated that even at low impact velocities the linear parts of the profiles obey a quasi-one-dimensional theory proposed in the literature. The comparison of obtained results with a literature-based numerical study, performed for high range of Weber numbers, confirmed the simultaneous existence of linear and nonlinear parts in the radial velocity profiles. In spite of the scale differences in terms of Weber number, the agreements in the tendencies of the profiles imply the validity of the mechanism considered in the numerical study even at low and moderate level range of Weber numbers.
Starting Page	1
Ending Page	9
Page Count	9
File Format	PDF
ISSN	07234864
Journal	Experiments in Fluids
Volume Number	55
Issue Number	11
e-ISSN	14321114
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2014-10-28
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Engineering Fluid Dynamics Fluid- and Aerodynamics Engineering Thermodynamics, Heat and Mass Transfer
Content Type	Text
Resource Type	Article
Subject	Fluid Flow and Transfer Processes Physics and Astronomy Mechanics of Materials Computational Mechanics

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Full 3D-3C velocity measurement inside a liquid immersion droplet

High velocity impingement of single droplets on a dry smooth surface

Hollow droplets impacting onto a solid surface

Coalescence of two droplets impacting a solid surface

Particle velocimetry inside Newtonian and non-Newtonian droplets impacting a hydrophobic surface

Height-resolved velocity measurement of the boundary flow during liquid impact on dry and wetted solid substrates

Deposition of micron liquid droplets on wall in impinging turbulent air jet

Velocity field investigation inside a bulb turbine runner using endoscopic PIV measurements

Investigation of droplets impinging on a deep pool: transition from coalescence to jetting

Full-field spreading velocity measurement inside droplets impinging on a dry solid surface

Similar Documents

Full 3D-3C velocity measurement inside a liquid immersion droplet

High velocity impingement of single droplets on a dry smooth surface

Hollow droplets impacting onto a solid surface

Coalescence of two droplets impacting a solid surface

Particle velocimetry inside Newtonian and non-Newtonian droplets impacting a hydrophobic surface

Height-resolved velocity measurement of the boundary flow during liquid impact on dry and wetted solid substrates

Deposition of micron liquid droplets on wall in impinging turbulent air jet

Velocity field investigation inside a bulb turbine runner using endoscopic PIV measurements

Investigation of droplets impinging on a deep pool: transition from coalescence to jetting

Full-field spreading velocity measurement inside droplets impinging on a dry solid surface