ASCR Highlights

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June 14, 2019
Simulations of different geometric states of fluid (red) in rock (tan). Using the Titan supercomputer at Oak Ridge National Laboratory, researchers validated a geometric model for characterizing fluid flow in porous rock and geologic material from theory.
New Geometric Model Improves Predictions of Fluid Flow in Rock
Supercomputer validates mathematical approach for describing geological features.
June 12, 2019
Temperature distribution in wire-wrapped pin bundle shows hot spots near the wire-wrap contact with the solid pin.
High-Fidelity Multiphysics Simulations to Improve Nuclear Reactor Safety and Economics
Engineers can model heat distribution in reactor designs with fewer or no approximations.
June 11, 2019
The image illustrates this process and shows how two neutrons (shown as blue spheres in the background) beta decay into a neutron and a proton (shown as a red sphere) under the emission of an electron and a neutrino (small green and blue sphere).
Solving a Beta Decay Puzzle
Researchers use advanced nuclear models to explain 50-year mystery surrounding the process stars use to transform elements.
June 6, 2019
In the North-Central Atlantic Ocean near the center of the simulation snapshot, a hurricane is visible as a dot of gray and from the cold water (green) it stirred up in the otherwise warm (red) Central Atlantic Ocean.
Watching the Rain in Climate Models
Scientists use supercomputers to determine how reliably a popular Earth system model represents precipitation regionally and globally.
June 6, 2019
To determine key behaviors in a self-healing material—a composite of cement and a polymer—for underground wells, researchers built a simulation that explained molecular-level interactions.
Simulations Shed Light on Self-Healing Cement
A first-of-its-kind computer simulation reveals self-healing cement for geothermal and oil and gas wells performs better than originally thought.
June 5, 2019
The number density of electrons and positrons in a 3D relativistic plasma turbulence simulation. The energy cascade causes structures to form over a broad range of scales, spanning from microphysical scales (on the particle gyration scale) to the box size
Computer Simulation Shows Astrophysical Particle Acceleration
Particles act in a way that justifies extrapolating simulation results to astrophysical scales.
June 1, 2019
This side view of the STAR detector at the Relativistic Heavy Ion Collider (RHIC) shows the endcap electromagnetic calorimeter.
STAR Gains Access to “Wimpy” Quarks and Gluons
Low-momentum (wimpy) quarks and gluons contribute to proton spin, offering insights into protons’ behavior in all visible matter.
May 30, 2019
Titan supercomputer tells origin story of nanoparticle size distributions with large-scale simulations.
Laser Focus Shines Light on How Nanoparticles Form
Titan supercomputer tells origin story of nanoparticle size distributions with large-scale simulations.
April 22, 2019
Artificial Intelligence and Deep Learning Accelerate Efforts to Develop Clean, Virtually Limitless Fusion Energy
Nuclear fusion power delivered by magnetic confinement tokamak reactors carries the promise of sustainable and clean energy for the future.
April 18, 2019
Sea Quark Spin Surprise!
Since the 1980s, scientists have known that quark and antiquark spins within a proton account for, at best, a quarter of the overall proton spin.
April 15, 2019
Team Takes Fluoride from Taps and Toothpaste to Batteries
Researchers discovered a new liquid electrolyte named BTFE. The electrolyte could replace the molten salt currently used in fluoride-based
February 27, 2019
How Much Water Does the World Use?
Information on human water use is often available only on large space and time scales. To better inform Earth system models and global hydrologic
February 26, 2019
First Observation of Methane’s Increasing Greenhouse Effect at the Earth’s Surface
While atmospheric methane concentrations plateaued between 1995 and 2006, they have since increased and are expected to impact the surface energy
February 25, 2019
Gust or Bust: Blustery Winds Important for Modeling Tropical Rainfall
Earth system models struggle to represent some aspects of tropical circulations, leading to offsets from observations in tropical rainfall. In
February 17, 2019
New Model Sheds Light on Key Physics of Magnetic Islands that Can Halt Fusion Reactions
Magnetic islands can grow and thereby degrade and potentially disrupt the plasma confinement and damage the doughnut-shaped tokamak facilities that
February 12, 2019
Pinnacle Engines Develops Efficient, Low-Emission Gasoline Engine Using Supercomputing
For over a decade, California-based small business Pinnacle Engines has developed opposed-piston engines for a range of small, single-cylinder
February 11, 2019
X-ray beam induces photo-ejection of an electron from (left) hydrogen and (right) helium.
Measuring the Impossible: X-ray Photoelectron Spectroscopy of Hydrogen and Helium
Two most abundant elements in the universe, hydrogen & helium, were previously thought to be impossible to measure by X-ray photoelectron spectroscopy
February 11, 2019
Atomic Snapshots of Photosynthesis
More than 2 billion years ago, tiny organisms on Earth started photosynthesizing. Nearly all life on Earth now depends on photosynthesis but it
February 1, 2019
Near-Term Ocean Warming Around Antarctica Affects Long-Term Rate of Sea Level Rise
The rapid change now underway on Thwaites Glacier, located in the West Antarctic Ice Sheet, raises concern that a threshold for unstoppable
January 22, 2019
Optimizing Electric Fields Yields Better Catalysts
In catalytic reactions, an electric field affects chemical bonds and, therefore, reaction mechanisms, rates, and selectivity. Electric fields,
January 21, 2019
New Probe for the Secrets of Complex Interfaces
Understanding the detailed nature of complex interfaces has become a quest of profound significance, as it underlies urgently needed advances in
January 14, 2019
Rapid Lake Draining on Ice Sheets Changes How Water Moves in Unexpected Ways
Moulins are holes that funnel water on the surface of a glacier or ice sheet to its base. There, the water acts like a lubricant and may cause the
December 26, 2018
More Designer Peptides, More Possibilities
Scientists from the University of Washington, Stanford University, and the Pacific Northwest National Laboratory (PNNL) created a computational
December 23, 2018
Deep Learning for Electron Microscopy
MENNDL, an artificial intelligence system, automatically designed an optimal deep learning network to extract structural information from raw
December 12, 2018
Future Loss of Arctic Sea-Ice Cover Could Contribute to the Substantial Decrease in California’s Rainfall
The dramatic Arctic sea-ice loss observed over the satellite era has intensified debate into whether these high-latitude changes are affecting