By a News Reporter-Staff News Editor at Physics Week -- Researchers detail new data in Fluids Research. According to news reporting originating in Orlando, Florida, by VerticalNews journalists, research stated, "The complex multiscale physics of nano-particle laden functional droplets in a reacting environment is of fundamental and applied significance for a wide variety of applications ranging from thermal sprays to pharmaceutics to modern day combustors using new brands of bio-fuels. Formation of homogenous nucleated bubbles at the superheat limit inside vaporizing droplets (with or without nanoparticles) represents an unstable system."
The news reporters obtained a quote from the research from the University of Central Florida, "Here we show that self-induced boiling in burning functional pendant droplets can produce severe volumetric shape oscillations. Internal pressure build-up due to ebullition activity ejects bubbles from the droplet domain causing undulations on the droplet surface and oscillations in bulk. Through experiments, we establish that the degree of droplet deformation depends on the frequency and intensity of these bubble expulsion events. In a distinct regime of single isolated bubble residing in the droplet, however, pre-ejection transient time is identified by Darrieus-Landau evaporative instability, where bubble-droplet system behaves as a synchronized driver-driven system with bulk bubble-shape oscillations being imposed on the droplet."
According to the news reporters, the research concluded: "The agglomeration of nanophase additives modulates the flow structures within the droplet and also influences the bubble inception and growth leading to different levels of instabilities."
For more information on this research see: Insight into instabilities in burning droplets. Physics of Fluids, 2014;26(3):133-148. Physics of Fluids can be contacted at: Amer Inst Physics, Circulation & Fulfillment Div, 2 Huntington Quadrangle, Ste 1 N O 1, Melville, NY 11747-4501, USA. (American Institute of Physics - www.aip.org/; Physics of Fluids - pof.aip.org/)
Our news correspondents report that additional information may be obtained by contacting A. Miglani, University of Central Florida, Dept. of Mech & Aerosp Engn, Orlando, FL 32816, United States. Additional authors for this research include S. Basu and R. Kumar.
Keywords for this news article include: Orlando, Florida, United States, Fluids Research, North and Central America
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