Featured Research

from universities, journals, and other organizations

Better combustion through plasma

Date:
November 26, 2013
Source:
American Physical Society's Division of Fluid Dynamics
Summary:
Scientists know that by introducing plasma to combustion, new chemical species are produced that catalyze the reaction. But no one knows precisely what species are involved, what the reactions are, and what their rates are. To better understand plasma-assisted combustion and to develop future technology, researchers are conducting experiments and creating computer models to determine which chemical processes are involved.

Mix together air, fuel, and heat and you get combustion, the chemical reaction that powers most engines in planes, trains and automobiles. And if you throw in some ionized gas (plasma), it turns out, you can sustain combustion even in conditions that would otherwise snuff out the reaction: at low air pressure, in high winds or when there's low fuel.

Related Articles


Such plasma-assisted combustion can potentially give an efficiency boost to high-performance aircraft. The technology could help military jets fly at high altitudes, passenger planes and unmanned drones cruise for long distances while conserving fuel, and supersonic jets maintain ignition at breakneck speeds that would normally suffocate flames with fast-flowing air.

Scientists know that by introducing plasma to the reaction -- near or at the location where the flame ignites -- new chemical species are produced that catalyze combustion. But no one knows precisely what species are involved, what the reactions are, and what their rates are. "It's not well understood at all," said Igor Adamovich of Ohio State University.

To better understand plasma-assisted combustion and to develop future technology, researchers are conducting experiments and creating computer models to determine which chemical processes are involved.

Adamovich will discuss some of his and his colleagues' recent experimental results and computer models at the meeting of the American Physical Society's Division of Fluid Dynamics, held Nov. 24 -- 26 in Pittsburgh. The researchers studied reactions and reaction rates at air pressures that represent high-altitude flight and at temperatures between 200 and 400 degrees Celsius -- below ignition temperature and where data and reliable models are particularly lacking. The researchers found that for simpler fuels -- such as hydrogen, methane and ethylene -- the models agreed fairly well with experimental data, while for propane, the agreement was much worse.

Just over five years ago, relatively little was known about how plasma-assisted combustion works, Adamovich said. But since then, scientists have made significant progress toward identifying the mechanism behind the plasma assisted combustion chemistry. "We hope in a few years, such a mechanism might emerge," he said.


Story Source:

The above story is based on materials provided by American Physical Society's Division of Fluid Dynamics. Note: Materials may be edited for content and length.


Cite This Page:

American Physical Society's Division of Fluid Dynamics. "Better combustion through plasma." ScienceDaily. ScienceDaily, 26 November 2013. <www.sciencedaily.com/releases/2013/11/131126134630.htm>.
American Physical Society's Division of Fluid Dynamics. (2013, November 26). Better combustion through plasma. ScienceDaily. Retrieved November 26, 2014 from www.sciencedaily.com/releases/2013/11/131126134630.htm
American Physical Society's Division of Fluid Dynamics. "Better combustion through plasma." ScienceDaily. www.sciencedaily.com/releases/2013/11/131126134630.htm (accessed November 26, 2014).

Share This


More From ScienceDaily



More Matter & Energy News

Wednesday, November 26, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

NASA's First 3-D Printer In Space Creates Its First Object

NASA's First 3-D Printer In Space Creates Its First Object

Newsy (Nov. 26, 2014) The International Space Station is now using a proof-of-concept 3D printer to test additive printing in a weightless, isolated environment. Video provided by Newsy
Powered by NewsLook.com
Bolivian Recycling Initiative Turns Plastic Waste Into School Furniture

Bolivian Recycling Initiative Turns Plastic Waste Into School Furniture

Reuters - Innovations Video Online (Nov. 26, 2014) Innovative recycling project in La Paz separates city waste and converts plastic garbage into school furniture made from 'plastiwood'. Tara Cleary reports. Video provided by Reuters
Powered by NewsLook.com
Who Will Failed Nuclear Talks Hurt Most?

Who Will Failed Nuclear Talks Hurt Most?

Reuters - Business Video Online (Nov. 25, 2014) With no immediate prospect of sanctions relief for Iran, and no solid progress in negotiations with the West over the country's nuclear programme, Ciara Lee asks why talks have still not produced results and what a resolution would mean for both parties. Video provided by Reuters
Powered by NewsLook.com
Flying Enthusiast Converts Real-Life Aircraft Cockpit Into Simulator

Flying Enthusiast Converts Real-Life Aircraft Cockpit Into Simulator

Reuters - Innovations Video Online (Nov. 25, 2014) A virtual flying enthusiast converts parts of a written-off Airbus aircraft into a working flight simulator in his northern Slovenian home. Jim Drury reports. Video provided by Reuters
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins