High-Reynolds-number flows (which are prone to turbulence) are critically important in aeronautics, naval applications, energy conversion processes, manufacturing, mixing and dilution of pollutants, and in many aspects of climate modeling, according to Professor Hassan Nagib at the Illinois Institute of Technology in Chicago.
Recent advances in computing have allowed great strides to be made in modeling fluids, significantly modifying the traditional fluids framework, but only for flows involving low Reynolds numbers. Future developments in high-Reynolds-number flows depend on improved measuring techniques and the construction of new facilities, say Nagib and his colleagues.
The paper reviews the salient advances that have introduced new elements into the theoretical foundations of fluids and challenged textbook orthodoxy.
"We also highlight aspects where differences of opinion persist," says Nagib, "which we hope might mark the beginning of their resolution." By outlining the gaps in our understanding that still exist, the authors hope, in principle, to provide a roadmap for future research on the topic.
The article, "Wall-bounded turbulent flows at high Reynolds numbers: Recent advances and key issues" by I. Marusic, B. J. McKeon, P. A. Monkewitz, H. M. Nagib, A. J. Smits, and K. R. Sreenivasan was published online in the journal Physics of Fluids on June 29, 2010. See: http://link.aip.org/link/PHFLE6/v22/i6/p065103/s1
Journalists may request a free PDF of this article by contacting email@example.com
ABOUT PHYSICS OF FLUIDS
Physics of Fluids is published by the American Institute of Physics with the cooperation of The American Physical Society Division of Fluid Dynamics. The journal is devoted to the publication of original theoretical, computational, and experimental contributions to the dynamics of gases, liquids, and complex or multiphase fluids. Content is published online daily and collected into monthly online and printed issues (12 issues per year). See: http://pof.aip.org/
The American Institute of Physics is a federation of 10 physical science societies representing more than 135,000 scientists, engineers, and educators and is one of the world's largest publishers of scientific information in the physical sciences. Offering partnership solutions for scientific societies and for similar organizations in science and engineering, AIP is a leader in the field of electronic publishing of scholarly journals. AIP publishes 12 journals (some of which are the most highly cited in their respective fields), two magazines, including its flagship publication Physics Today; and the AIP Conference Proceedings series. Its online publishing platform Scitation hosts nearly two million articles from more than 185 scholarly journals and other publications of 28 learned society publishers.
Jason Socrates Bardi | EurekAlert!
IceCube experiment finds Earth can block high-energy particles from nuclear reactions
24.11.2017 | Penn State
New proton record: Researchers measure magnetic moment with greatest possible precision
24.11.2017 | Johannes Gutenberg-Universität Mainz
High-precision measurement of the g-factor eleven times more precise than before / Results indicate a strong similarity between protons and antiprotons
The magnetic moment of an individual proton is inconceivably small, but can still be quantified. The basis for undertaking this measurement was laid over ten...
Heat from the friction of rocks caused by tidal forces could be the “engine” for the hydrothermal activity on Saturn's moon Enceladus. This presupposes that...
The WHO reports an estimated 429,000 malaria deaths each year. The disease mostly affects tropical and subtropical regions and in particular the African continent. The Fraunhofer Institute for Silicate Research ISC teamed up with the Fraunhofer Institute for Molecular Biology and Applied Ecology IME and the Institute of Tropical Medicine at the University of Tübingen for a new test method to detect malaria parasites in blood. The idea of the research project “NanoFRET” is to develop a highly sensitive and reliable rapid diagnostic test so that patient treatment can begin as early as possible.
Malaria is caused by parasites transmitted by mosquito bite. The most dangerous form of malaria is malaria tropica. Left untreated, it is fatal in most cases....
The formation of stars in distant galaxies is still largely unexplored. For the first time, astron-omers at the University of Geneva have now been able to closely observe a star system six billion light-years away. In doing so, they are confirming earlier simulations made by the University of Zurich. One special effect is made possible by the multiple reflections of images that run through the cosmos like a snake.
Today, astronomers have a pretty accurate idea of how stars were formed in the recent cosmic past. But do these laws also apply to older galaxies? For around a...
Just because someone is smart and well-motivated doesn't mean he or she can learn the visual skills needed to excel at tasks like matching fingerprints, interpreting medical X-rays, keeping track of aircraft on radar displays or forensic face matching.
That is the implication of a new study which shows for the first time that there is a broad range of differences in people's visual ability and that these...
15.11.2017 | Event News
15.11.2017 | Event News
30.10.2017 | Event News
24.11.2017 | Physics and Astronomy
24.11.2017 | Health and Medicine
24.11.2017 | Earth Sciences