Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

High-speed structured planar laser illumination for contrast improvement of two-phase flow images

Not Accessible

Your library or personal account may give you access

Abstract

A high-speed method to remove blurring effects caused by multiple scattering in planar laser images of two-phase flows is demonstrated. The technique is based on structured illumination and is for the first time to our knowledge applied on a dynamic medium. As structured illumination requires three successive images to be recorded and to freeze the flow motion in time, a high-speed laser and imaging system is employed. We show that by using a time delay of 55μs between the images a single-shot representation of a dilute flow of water droplets can be achieved. By having an additional inner stream with known structure and composition, the efficiency of the method is quantitatively evaluated, showing an increase from 58% to 93% in image contrast. Such an improvement allows more accurate analysis and interpretation of scattering two-phase flow images.

© 2008 Optical Society of America

Full Article  |  PDF Article
More Like This
Application of structured illumination for multiple scattering suppression in planar laser imaging of dense sprays

Edouard Berrocal, Elias Kristensson, Mattias Richter, Mark Linne, and Marcus Aldén
Opt. Express 16(22) 17870-17881 (2008)

Spatially resolved, single-ended two-dimensional visualization of gas flow phenomena using structured illumination

Elias Kristensson, Mattias Richter, Sven-Göran Pettersson, Marcus Aldén, and Stefan Andersson-Engels
Appl. Opt. 47(21) 3927-3931 (2008)

Reliable LIF/Mie droplet sizing in sprays using structured laser illumination planar imaging

Yogeshwar Nath Mishra, Elias Kristensson, and Edouard Berrocal
Opt. Express 22(4) 4480-4492 (2014)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (2)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (4)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Metrics

Select as filters


Select Topics Cancel
© Copyright 2022 | Optica Publishing Group. All Rights Reserved