NDLI: Experimental determination of droplet size and density field in condensing flows

Content Provider	Springer Nature Link
Author	Lamanna, G. van Poppel, J. van Dongen, M. E. H.
Copyright Year	2002
Abstract	We report a detailed experimental characterization of the process of homogeneous condensation in supersonic expanding flow. In our experiments, the supersaturated mixture expands in a Laval nozzle, where, depending on the initial conditions, a steady or periodically oscillating flow may evolve due to the non-linear interaction of nucleation and droplet growth rate with the flow field. Two experimental techniques are utilized: holographic interferometry for the determination of the density field and a time-resolved white-light extinction method. The latter is employed to derive the evolution in time of the droplet cloud (i.e., modal radius, number density, and relative width) and to measure the frequency of oscillations. In combination with the wide-field density data, droplet size measurements provide additional physical insights in the mechanism of interaction in condensing flows and serve as an excellent test case for the critical assessment of nucleation and droplet growth theories. To this purpose, the accuracy of the measurements is carefully reviewed due to the difficulties of characterizing dense sub-micron droplet clouds by means of light-scattering techniques. An important byproduct of this analysis is an evaluation of the applicability of single-scattering approximations, i.e., Lambert-Beer law, for a variety of experimental configurations.
Starting Page	381
Ending Page	395
Page Count	15
File Format	PDF
ISSN	07234864
Journal	Experiments in Fluids
Volume Number	32
Issue Number	3
e-ISSN	14321114
Language	English
Publisher	Springer-Verlag
Publisher Date	2002-03-01
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
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

Laser reflection method for determination of shear stress in low density transitional flows

Droplet clustering in sprays

Experimental determination of the speed of sound in cavitating flows

An experimental and numerical study into turbulent condensing steam jets in air

Speckle tomography of turbulent flows with density fluctuations

Optical density and velocity measurements in cryogenic gas flows

Velocity, density and transport measurements in rotating, stratified flows

An experimental investigation of droplet evaporation and coalescence in a simple jet flow

A simple piezoelectric droplet generator

Experimental determination of droplet size and density field in condensing flows

Similar Documents

Laser reflection method for determination of shear stress in low density transitional flows

Droplet clustering in sprays

Experimental determination of the speed of sound in cavitating flows

An experimental and numerical study into turbulent condensing steam jets in air

Speckle tomography of turbulent flows with density fluctuations

Optical density and velocity measurements in cryogenic gas flows

Velocity, density and transport measurements in rotating, stratified flows

An experimental investigation of droplet evaporation and coalescence in a simple jet flow

A simple piezoelectric droplet generator

Experimental determination of droplet size and density field in condensing flows