Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Industrial Pump Inspired by Flapping Bird Wings

05.02.2015

New ratcheting pump uses vibrations instead of traditional rotor to transport fluids

Birds are unwitting masters of fluid dynamics -- they manipulate airflow each time they flap their wings, pushing air in one direction and moving themselves in another. Two New York University researchers have taken inspiration from avian locomotion strategies and created a pump that moves fluid using vibration instead of a rotor. Their results will be published February 3, 2015, in the journal Applied Physics Letters, from AIP Publishing.


B. Thiria & J. Zhang

When a fluid is squeezed and expanded repeatedly between two sawtooth-like boundaries, a net flow is generated to the right.

"When we use a household pump, that pump is very likely a centrifugal pump. It uses a high-speed rotor to move water by throwing it from the pump’s inlet to the outlet," explained Benjamin Thiria, who carried out the work in collaboration with Jun Zhang.

Instead of a rotor, Thiria and Zhang’s design has teeth. Two asymmetrically sawtoothed panels, placed with their teeth facing each other, create a channel that can rapidly open and close. Water rushes into the channel when it expands and is forced out when it contracts.

"When a fluid is squeezed and expanded repeatedly, the asymmetric boundary forces the fluid to move in one direction," said Zhang. The repeated vibration of the channel drives fluid transport because the asymmetry of the ratchet’s teeth makes it easier for the fluid to move with them than against them.

The pump could be particularly useful in industrial situations where machinery is vibrating excessively and therefore operating inefficiently. Because it is powered by vibration, it could capture some of the wasted mechanical energy and instead use it for a productive task like circulating coolant. It would also dampen the noise that vibrating machinery tends to emit.

In the future, Thiria and Zhang hope to find other examples of similar pumps in nature -- such as the human circulatory system -- and use them to further optimize their own design.

"For many years, fluid-structure interaction has been the most important subject for scientists working in fluid physics," said Thiria, who now conducts research at ESPCI ParisTech. "Our pump shows that surprising results come from fluid-structure interaction."

The article, "Ratcheting Fluid with Geometric Anisotropy," is authored by Benjamin Thiria and Jun Zhang. It will be published in Applied Physics Letters on February 2, 2015 (DOI: 10.1063/1.4906927). After that date, it can be accessed at: http://scitation.aip.org/content/aip/journal/apl/106/5/10.1063/1.4906927 

The authors of this paper are affiliated with New York University (Thiria and Zhang) and ESPCI ParisTech (Thiria).

ABOUT THE JOURNAL

Applied Physics Letters features concise, rapid reports on significant new findings in applied physics. The journal covers new experimental and theoretical research on applications of physics phenomena related to all branches of science, engineering, and modern technology. See http://apl.aip.org

Contact Information
Jason Socrates Bardi
+1 240-535-4954
jbardi@aip.org
@jasonbardi

Jason Socrates Bardi | newswise

More articles from Physics and Astronomy:

nachricht First Juno science results supported by University of Leicester's Jupiter 'forecast'
26.05.2017 | University of Leicester

nachricht Measured for the first time: Direction of light waves changed by quantum effect
24.05.2017 | Vienna University of Technology

All articles from Physics and Astronomy >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Can the immune system be boosted against Staphylococcus aureus by delivery of messenger RNA?

Staphylococcus aureus is a feared pathogen (MRSA, multi-resistant S. aureus) due to frequent resistances against many antibiotics, especially in hospital infections. Researchers at the Paul-Ehrlich-Institut have identified immunological processes that prevent a successful immune response directed against the pathogenic agent. The delivery of bacterial proteins with RNA adjuvant or messenger RNA (mRNA) into immune cells allows the re-direction of the immune response towards an active defense against S. aureus. This could be of significant importance for the development of an effective vaccine. PLOS Pathogens has published these research results online on 25 May 2017.

Staphylococcus aureus (S. aureus) is a bacterium that colonizes by far more than half of the skin and the mucosa of adults, usually without causing infections....

Im Focus: A quantum walk of photons

Physicists from the University of Würzburg are capable of generating identical looking single light particles at the push of a button. Two new studies now demonstrate the potential this method holds.

The quantum computer has fuelled the imagination of scientists for decades: It is based on fundamentally different phenomena than a conventional computer....

Im Focus: Turmoil in sluggish electrons’ existence

An international team of physicists has monitored the scattering behaviour of electrons in a non-conducting material in real-time. Their insights could be beneficial for radiotherapy.

We can refer to electrons in non-conducting materials as ‘sluggish’. Typically, they remain fixed in a location, deep inside an atomic composite. It is hence...

Im Focus: Wafer-thin Magnetic Materials Developed for Future Quantum Technologies

Two-dimensional magnetic structures are regarded as a promising material for new types of data storage, since the magnetic properties of individual molecular building blocks can be investigated and modified. For the first time, researchers have now produced a wafer-thin ferrimagnet, in which molecules with different magnetic centers arrange themselves on a gold surface to form a checkerboard pattern. Scientists at the Swiss Nanoscience Institute at the University of Basel and the Paul Scherrer Institute published their findings in the journal Nature Communications.

Ferrimagnets are composed of two centers which are magnetized at different strengths and point in opposing directions. Two-dimensional, quasi-flat ferrimagnets...

Im Focus: World's thinnest hologram paves path to new 3-D world

Nano-hologram paves way for integration of 3-D holography into everyday electronics

An Australian-Chinese research team has created the world's thinnest hologram, paving the way towards the integration of 3D holography into everyday...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Marine Conservation: IASS Contributes to UN Ocean Conference in New York on 5-9 June

24.05.2017 | Event News

AWK Aachen Machine Tool Colloquium 2017: Internet of Production for Agile Enterprises

23.05.2017 | Event News

Dortmund MST Conference presents Individualized Healthcare Solutions with micro and nanotechnology

22.05.2017 | Event News

 
Latest News

How herpesviruses win the footrace against the immune system

26.05.2017 | Life Sciences

Water forms 'spine of hydration' around DNA, group finds

26.05.2017 | Life Sciences

First Juno science results supported by University of Leicester's Jupiter 'forecast'

26.05.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>