Energy and Climate

Energy & Climate News

New Polarized-Depolarized Measurement Capability Extends Use of Raman/Rayleigh Methods to More Flame Types

Allowing single-shot measurements of all major species in nonsooting flames of simple fuels, such as H2 and CH4, spontaneous Raman scattering has been a key Combustion Research Facility (CRF) laser diagnostic technique for fundamental turbulent-combustion studies. However, laser-induced fluorescence from soot precursors tends to interfere significantly with Raman scattering signals—limiting this method’s utility. Such fluorescence [...]

Sandia’s Exascale Computing Effort Expected to Curtail Effects of System Faults

Computing power today is more potent than ever before. Or is it? In many applications, yes, but when it comes to sophisticated, detailed modeling of the Earth’s climate, an analogy of using an abacus to track the national debt may be only a slight exaggeration. “To accurately predict the Earth’s climate over the next 200–300 [...]

New Conceptual Insights into Diesel Engine Fuel-Injection Processes

By combining advanced theory and high-fidelity large eddy simulation, Combustion Research Facility (CRF) researchers Rainer Dahms and Joe Oefelein (both in 8351) have provided new conceptual insights that promise to improve the understanding and prediction of fuel-injection processes in high-pressure diesel engine conditions. Their results, which experiments performed by CRF researchers Lyle Pickett and Julien [...]

Second Annual Electric Power Research Institute/Sandia Photovoltaic Systems Symposium

Sandia and Electric Power Research Institute (EPRI) are delighted to host the second joint symposium on technical issues related to photovoltaic (PV) systems and related technologies. This year, the symposium will cover three areas: PV performance modeling; screening methods, distribution PV host­ing capacity, and advanced inverter modeling; and PV system reliability and maintenance strategies. Sandians [...]

National Rotor Testbed Functional Scaling Presented at American Institute of Aeronautics and Astronautics 2014 Scitech

David Maniaci (in Sandia’s Wind Energy Technologies Dept.) traveled to National Harbor, Maryland, in January to present a paper at the American Institute of Aeronautics and Astronautics (AIAA) SciTech/American Society of Mechanical Engineers Wind Energy Symposium titled, “Definition of the National Rotor Testbed: An Aeroelastically Relevant Research-Scale Wind Turbine Rotor.” Approximately 60 researchers from various institutions [...]

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