Research team receives Best Paper Award at 2020 ASME Turbo Expo Conference
Research Scientist Ricky Dehner and PhD student Pranav Sriganesh as well as Professor Ahmet Selamet and technical specialist Keith Miazgowicz from Ford Motor Company received the Best Paper Award at the 2020 ASME Turbo Expo Conference in London, England for their paper titled “Generation Mechanism of Broadband Whoosh Noise in an Automotive Turbocharger Centrifugal Compressor” . This award recognizes outstanding technical papers and acknowledges the author's contributions to the gas turbine industry.
Their paper identifies the source of broadband noise that occurs in turbocharger centrifugal compressors, where the resulting fluid instability also degrades performance and efficiency. Detailed, 3D computational fluid dynamics (CFD) predictions revealed that as flow begins to separate and reverse at reduced flow rates, vortices (fluid rotation with a low pressure core) form near the leading edge of the main impeller blades of the compressor. These vortices rotate relative to the impeller and interact with the blades to generate broadband noise.
“This award marks a significant milestone of progress towards improving turbo compressors, and it is a great feeling to be recognized after all of the time and effort that has been devoted,” said Dehner. “We are thankful for support from Ford Motor Company to conduct this research and the Ohio Supercomputer Center for providing the computing resources.”
The research team has been quantifying broadband whoosh noise and methods to mitigate it in the Turbocharger Lab, under the direction of Professor Ahmet Selamet, for nearly a decade, but the recent 3D CFD predictions provide a whole new level of understanding. Dehner says that now that they have identified and understand the complex flow physics, they are much better equipped to tackle this issue and improve future designs.
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