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: Theorists weigh in on where to hunt dark matter

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

Physicists help design, build cargo X-ray scanners

8 hours ago

(Phys.org) —Two SLAC physicists with decades of particle accelerator experience helped a Silicon Valley company design and build X-ray devices that scan cargo containers for nuclear materials and other ...

Theorists weigh in on where to hunt dark matter

8 hours ago

(Phys.org) —Now that it looks like the hunt for the Higgs boson is over, particles of dark matter are at the top of the physics "Most Wanted" list. Dozens of experiments have been searching for them, but ...

User comments : 0

More news stories

Theorists weigh in on where to hunt dark matter

(Phys.org) —Now that it looks like the hunt for the Higgs boson is over, particles of dark matter are at the top of the physics "Most Wanted" list. Dozens of experiments have been searching for them, but ...

Hydrogen atoms under the magnifying glass

To describe the microscopic properties of matter and its interaction with the external world, quantum mechanics uses wave functions, whose structure and time dependence is governed by the Schrödinger equation. ...

NASA: Austin, calling Austin. 3-D pizzas to go

(Phys.org) —The idea of living with 3-D printed food is neither unthinkable nor new; designers and futurists have been looking to 3-D printing as food's next frontier. In 2012, there was news that the Thiel ...

Brain can be trained in compassion, study shows

Until now, little was scientifically known about the human potential to cultivate compassion—the emotional state of caring for people who are suffering in a way that motivates altruistic behavior.