Supercomputing Quieter Jet Engines Share your comment!

 

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A researcher from the University of Illinois at Urbana-Champaign is using supercomputer resources to help the Navy and NASA build quieter jets.

Daniel Bodony, the Blue Waters associate professor of Aerospace Engineering at the university, is using supercomputing resources from XSEDE (Extreme Science and Engineering Discovery Environment) to calculate the mechanics behind jet noise, according to a recent story on ScienceNode.

For example, the Intel Xeon-based Stampede supercomputer at the Texas Advanced Computing Center helped him run calculations that used 500 million grid points to simulate exhaust from a jet engine, the story said.

“To accurately predict jet exhaust noise, it takes approximately 500 million grid points to describe the jet exhaust, and each grid point carries five pieces of information,” he said in the article. “Roughly 1 million timesteps are needed to simulate the exhaust in time, and each timestep requires hundreds of floating point operations for each grid point. An entire simulation requires nearly an exaFLOP of calculation.”

According to the story, Bodony is working on two separate jet noise projects: the Navy wants to reduce jet noise for workers who are close to tactical fighters on aircraft carriers, while NASA wants to reduce the noise of fans on their aircrafts.

“When you think of the power of a jet engine, you generally think of a really powerful engine that can move and transport several hundred people several hundred miles an hour over several thousand miles,” Bodony said in the article. “The generated sound is an extremely small part of the power produced by the engine. We’re trying to tickle the jet in the right way, just trying to very lightly touch the engine to change the noise significantly.”

Posted on December 21, 2016 by Wylie Wong, Slashdot Media Contributing Editor