Under the Microscope #11 - Jet streams

Feb 24, 2012

In this video Dr Sungjune Jung shows us the fluid structures produced by the impact of two liquid jets.

This video is not supported by your browser at this time.

Dr. Jung: “This video shows the evolution of the flow structures generated from the collision of two liquid jets each with a radius of 420um. The jets were ejected from parallel cylindrical with an internal diameter of 0.85mm.

The collision of the jets resulted in various systems of behaviour which depend on the jet velocities and the liquid properties. We focus on the system where the impinging jets form a liquid sheet which then breaks up into a regular succession of ligaments and , a so-called “fishbone” pattern. This high-speed imaging reveals a fish-like formation for the fluid.

The oval sheet with rims correspond to the fish head, the drops on thin ligaments to its body, and bigger free drops at the end to its tail. We are particularly interested in this fluid formation, because the fishbone phenomenon provides a simple and visual tool to evaluate the properties of inkjet printing fluids, with which the fishbone structure sensitively varies.”

Under the Microscope is a collection of videos that show glimpses of the natural and man-made world in stunning close-up. They are released every Monday and Thursday and you can see them here: bit.ly/A6bwCE

Many thanks to Prof Ian Hutchings, Dr. Graham Martin and Dr. Steve Hoath at Inkjet Research Centre, Department of Engineering.

Explore further: Information storage for the next generation of plastic computers

add to favorites email to friend print save as pdf

Related Stories

Photos show how a specific fluid defies normal activity

Nov 30, 2010

An illustration showing a scientific phenomenon that defies common intuition has garnered Sunghwan (Sunny) Jung, assistant professor of engineering science and mechanics at Virginia Tech, and his doctoral ...

Under the microscope #9 - skate head

Feb 17, 2012

Under the Microscope is a collection of videos that show glimpses of the natural and man-made world in stunning close-up. They are released every Monday and Thursday and you can see them here: http://bit.ly/A6bwCE

Single cell injections

Aug 09, 2010

Duke University physicists have developed a way to produce sharp fluid jets with enough precision that they can inject material into a single, living cell. The technique promises a way to deliver drugs to ...

Recommended for you

How to test the twin paradox without using a spaceship

10 hours ago

Forget about anti-ageing creams and hair treatments. If you want to stay young, get a fast spaceship. That is what Einstein's Theory of Relativity predicted a century ago, and it is commonly known as "twin ...

User comments : 0

More news stories

Down's chromosome cause genome-wide disruption

The extra copy of Chromosome 21 that causes Down's syndrome throws a spanner into the workings of all the other chromosomes as well, said a study published Wednesday that surprised its authors.

Researchers see hospitalization records as additional tool

Comparing hospitalization records with data reported to local boards of health presents a more accurate way to monitor how well communities track disease outbreaks, according to a paper published April 16 in the journal PLOS ON ...

Ebola virus in Africa outbreak is a new strain

The Ebola virus that has killed scores of people in Guinea this year is a new strain—evidence that the disease did not spread there from outbreaks in some other African nations, scientists report.