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Welcome to the Fundamental & Computational Sciences website.
I hope you take the opportunity to explore it and learn about the outstanding people, capabilities and scientific research at the Pacific Northwest National Laboratory.

—Doug Ray, Associate Lab Director

"We strive to make progress on today's important scientific challenges."

 

Research Highlights

Pacific storm track simulation
Full Story | April 2014

Uncovering Global Effects of Clouds on Climate
Multi-scale model provides global view of Asian pollution impacts on Pacific storm track

Scientists from Texas A&M and PNNL provided a first-time global perspective of the impacts of Asian pollution on the Pacific storm track and subsequent weather. They found that a unique modeling technique developed at PNNL allowed them to understand the global scale effect of tiny pollution particles to strengthen storm clouds and rain.


 The unified multiscale model developed at PNNL couples water transport equations in such a way that this one model can represent transport at both pore and watershed scales.
Full Story | April 2014

Several Faces of Physics Become One
New multiscale model unifies physical laws of water flow to span all scales

Water moves through multifaceted physical boundaries. This poses a significant challenge for scientists who must simulate water flow across many domains. Scientists at Pacific Northwest National Laboratory conquered this barrier by merging different physical laws. Their new approach can describe any type of water flow in soils and the terrestrial ecosystem, in soil pores, streams, lakes, rivers and oceans, and in mixed media of pores and solids for soil and aquifer. The versatile properties of the new approach allow cross-domain simulation of water flow at different scales. The research was published in the Soil Science Society of America Journal.

Battery testing
Full Story | April 2014

Li-S Batteries Last Longer with Nanomaterial-Packed Cathode
Metal organic framework captures troubling polysulfides that usually cause battery failure

Electric vehicles could travel farther and more renewable energy could be stored with lithium-sulfur batteries that use a metal organic framework or MOF. Researchers at Pacific Northwest National Laboratory added the MOF to the battery's cathode to capture problematic polysulfides that usually cause lithium-sulfur batteries to fail after a few charges.



Full Story | April 2014

Simplifying Exascale Application Development
Scientists apply new graph programming method for evolving applications aimed at the exascale

Hiding the complexities that underpin exascale system operations from application developers is a critical challenge facing teams designing next-generation supercomputers. To tackle the problem, PNNL computer scientists are developing formal design processes based on Concurrent Collections (CnC), a programming model that combines task and data parallelism. Using graphs, they transformed LULESH proxy application code that models hydrodynamics into a complete CnC specification. These specifications capture data and control dependencies and separate computations from implementation issues, concealing the complexities of exascale systems, dramatically decreasing development cost, and increasing opportunities for automatic performance optimizations.

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