Engine Combustion

/Tag:Engine Combustion

CRF Researchers Are Source for 2015 QTR Sidebar Content

On September 10th, Energy Secretary Ernest Moniz released the second Quadrennial Technology Review (QTR 2015), which examines the most promising research, development, demonstration, and deployment (RDD&D) opportunities across energy technologies to effectively address the nation’s energy needs. Specifically, this analysis identifies the important technology RDD&D opportunities across energy supply and end-use in working toward a [...]

Direct Measurement of Key Molecule Will Increase Accuracy of Combustion Models

Sandia chemist John Savee (left) identified cycloheptadiene as the best fuel for creating a detectable QOOH, and Sandia computational expert Ewa Papajak (right) and her adviser, Judit Zádor, used quantum chemistry to explain the reaction mechanism. Savee and Papajak appear in front of the Advanced Light Source's Multiplexed Photoionization Mass Spectrometer at Lawrence Berkeley [...]

By | March 3rd, 2015|Computational Modeling & Simulation, CRF, Energy, Facilities, News, News & Events, Sensors & Optical Diagnostics, Transportation Energy|Comments Off on Direct Measurement of Key Molecule Will Increase Accuracy of Combustion Models

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

Figure 1.  A second Raman/Rayleigh line-imaging detection unit allows researcher to simultaneously measure polarized and depolarized components of Raman scattering signals, helping to overcome fluorescence interference from soot precursors in hydrocarbon flames. Allowing single-shot measurements of all major species in nonsooting flames of simple fuels, such as H2 and CH4, spontaneous Raman scattering [...]

By | April 23rd, 2014|Capabilities, CRF, Energy, Facilities, News, News & Events, Research & Capabilities, Sensors & Optical Diagnostics, Transportation Energy|Comments Off on New Polarized-Depolarized Measurement Capability Extends Use of Raman/Rayleigh Methods to More Flame Types

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 [...]

By | April 15th, 2014|Capabilities, CRF, Energy, Facilities, News, News & Events, Research & Capabilities, Systems Analysis, Transportation Energy|Comments Off on New Conceptual Insights into Diesel Engine Fuel-Injection Processes

Lyle Pickett Named a Society of Automotive Engineers Fellow

Lyle Pickett holds what could be the key to moving leaner lifted-flame combustion (LLFC) from the lab to the road—an oxygenated biofuel designed to capitalize on the engine’s efficiency. The constant-volume combustion vessel is shown in the background. (Photo courtesy of Randy Wong.) Lyle Pickett (in Sandia’s Engine Combustion Dept.) was just elected [...]

By | October 22nd, 2013|CRF, Energy, Facilities, News, News & Events, Transportation Energy|Comments Off on Lyle Pickett Named a Society of Automotive Engineers Fellow