Los Alamos National Laboratory mechanical and thermal engineering researchers’ efforts to solve the complex problem of how ocean currents affect the infrastructure of floating oilrigs and their computational fluid dynamics numerical simulations received recognition from ANSYS Inc.
Rechargeable lithium-ion batteries are commonly found in portable electronics such as cell...
An atomically thin membrane with microscopically small holes may prove to be the basis for...
Researchers have used an advanced model to simulate in unprecedented detail the workings of "resistance-switching cells" that might replace conventional memory for electronics applications, with the potential to bring faster and higher capacity computer memory while consuming less energy. These electromechanical "metallization cells" rapidly switch from high resistance to low resistance.
Hard on the heels of a five-year funding renewal, modeling and simulation technology developed at Los Alamos National Laboratory as part of the Consortium for the Advanced Simulation of Light Water Reactors will now be deployed to industry and academia under a new inter-institutional agreement for intellectual property.
How did fuzzy logic help a group of researchers in Tunisia and Algeria create an ideal photovoltaic system that obeys the supply-and-demand principle and its delicate balance? In the Journal of Renewable & Sustainable Energy, the group describes a new sizing system of a solar array and a battery in a standalone photovoltaic system that is based on fuzzy logic.
When electronic states in materials are excited during dynamic processes, interesting phenomena such as electrical charge transfer can take place on quadrillionth-of-a-second, or femtosecond, timescales. Numerical simulations in real time provide the best way to study these processes, but such simulations can be extremely expensive.
Multiphysics software has become the simulation tool for designing and optimizing new products. This software can quickly provide designers with multiple options for critical product designs across a range of environmental, physical and chemical operating conditions. Recently introduced multiphysics software enhancements also allow simplified use of these simulation tools across a broader range of users.
Just because concrete is the most widely used building material in human history doesn’t mean it can’t be improved. A recent study conducted by researchers from NIST, the Univ. of Strasbourg and Sika Corp. using U.S. Dept. of Energy Office of Science supercomputers has led to a new way to predict concrete’s flow properties from simple measurements.
Pioneering new research has debunked the theory that the asteroid thought to have led to the extinction of dinosaurs also caused vast global firestorms that ravaged planet Earth. A team of researchers from the Univ. of Exeter, Univ. of Edinburgh and Imperial College London recreated the immense energy released from an extraterrestrial collision with Earth that occurred around the time that dinosaurs became extinct.
Does glass ever stop flowing? Researchers have combined computer simulation and information theory, originally invented for telephone communication and cryptography, to answer this puzzling question. Watching a glass blower at work we can clearly see the liquid nature of hot glass. Once the glass has cooled down to room temperature though, it has become solid and we can pour wine in it or make window panes out of it.
Research combining experimental work and detailed molecular simulations has revealed, for the first time, the complex role that water plays in collagen. The new analysis reveals an important mechanism that had never been observed before: Adding even small amounts of water to, or removing water from, collagen in tendons can generate surprisingly strong forces, as much as 300 times stronger than the forces generated by muscles.
Acute care nurse practitioner students, specializing in flight nursing at Case Western Reserve Univ., will soon be training in the nation’s first state-of-the-art simulator built in an actual helicopter. The simulator creates the sense of treating critically injured patients from takeoff to landing. The helicopter simulator was installed at the university’s Cedar Avenue Service Center.
Due to their nanoscale dimensions and sensitivity to light, quantum dots are being used for a number of bioimaging applications including in vivo imaging of tumor cells, detection of biomolecules and measurement of pH changes. When quantum dots are introduced in biological media, proteins surround the nanoparticles and form a corona. The formation of the protein corona changes the sensitivity of the quantum dots to light.
Two teams of astronomers led by researchers at the Univ. of Cambridge have looked back nearly 13 billion years, when the universe was less than 10% its present age, to determine how quasars regulate the formation of stars and the build-up of the most massive galaxies. The team used a combination of data gathered from powerful radio telescopes and supercomputer simulations in their study.
Scientists at Univ. College London, in collaboration with groups at the Univ. of Bath and the Daresbury Laboratory, have uncovered the mystery of why blue light-emitting diodes (LEDs) are so difficult to make, by revealing the complex properties of their main component—gallium nitride—using sophisticated computer simulations.
Industrial drying systems are most commonly used in process industries to remove moisture content from the materials. These systems are designed according to the required moisture removal requirement. The working principle of drying systems is purely based on evaporation of liquids from solids.
Planets orbiting close to low-mass stars are prime targets in the search for extraterrestrial life. But new research led by an astronomy graduate student at the Univ. of Washington indicates some such planets may have long since lost their chance at hosting life because of intense heat during their formative years.
Building information modeling (BIM), now a standard tool throughout most architecture sectors, is critical for complex building types like healthcare and lab projects. Clients are finding great use for these models in facilities maintenance and long-term campus facilities planning. Owners also see great benefit with BIM, as many are interested in the long-term maintenance and scheduling abilities it offers.
Researchers from North Carolina State Univ. have created a model that mimics how differently adapted populations may respond to rapid climate change. Their findings demonstrate that depending on a population’s adaptive strategy, even tiny changes in climate variability can create a “tipping point” that sends the population into extinction.
Lawrence Livermore National Laboratory and the RAND Corporation will collaborate to expand the use of high-performance computing in decision analysis and policymaking. The two organizations signed a memorandum of understanding on Friday, Nov. 21. The arrangement provides a vehicle for the two organizations to explore the use of policy analysis methodologies with supercomputing applications.
A new discovery about the atomic structure of uranium dioxide will help scientists select the best computational model to simulate severe nuclear reactor accidents. Using the Advanced Photon Source, a team of researchers found that the atomic structure of uranium dioxide (UO2) changes significantly when it melts.
In a showdown of black hole versus G2—a cloud of gas and dust—it looks like G2 won. Recent research shows that G2 came within 30 billion km of the super-massive black hole at the center of our galaxy, yet managed to escape from the gravitational pull of the black hole.
An ultra-high-resolution NASA computer model has given scientists a stunning new look at how carbon dioxide in the atmosphere travels around the globe. Plumes of carbon dioxide in the simulation swirl and shift as winds disperse the greenhouse gas away from its sources. The simulation also illustrates differences in carbon dioxide levels in the northern and southern hemispheres.
Researchers at the Univ. of Southampton have demonstrated how glass can be manipulated to create electronic devices that will be smaller, faster and consume less power. The researchhas the potential to allow faster, more efficient electronic devices; further shrinking the size of our phones, tablets and computers and reducing their energy consumption by turning waste heat into power.
Not long ago, it would have taken several years to run a high-resolution simulation on a global climate model. But using some of the most powerful supercomputers now available, Lawrence Berkeley National Laboratory climate scientist Michael Wehner was able to complete a run in just three months. Not only were the simulations much closer to actual observations, but the high-resolution models were far better at reproducing intense storms.
A team of engineers and scientists has identified a source of electronic noise that could affect the functioning of instruments operating at very low temperatures, such as devices used in radio telescopes and advanced physics experiments. The findingscould have implications for the future design of transistors and other electronic components.
In classrooms and everyday conversation, explanations of global warming hinge on the greenhouse gas effect. In short, climate depends on the balance between two different kinds of radiation: The Earth absorbs incoming visible light from the sun, called “shortwave radiation,” and emits infrared light, or “longwave radiation,” into space.
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