A5075571725- Nuclear reactor physics and engineering
- Nuclear Engineering Thermal-Hydraulics
- Nuclear Materials and Properties
- Nuclear and radioactivity studies
- Fluid Dynamics and Turbulent Flows
- Heat Transfer and Boiling Studies
- Aerodynamics and Fluid Dynamics Research
- Graphite, nuclear technology, radiation studies
- Heat transfer and supercritical fluids
- Spacecraft and Cryogenic Technologies
- Nuclear Physics and Applications
- Wind and Air Flow Studies
- Fluid Dynamics and Mixing
- Fluid Dynamics and Vibration Analysis
- Computational Fluid Dynamics and Aerodynamics
- Cyclone Separators and Fluid Dynamics
- Vehicle emissions and performance
- Fluid Dynamics and Heat Transfer
- Fusion materials and technologies
- Magnetic confinement fusion research
- Embedded Systems Design Techniques
- Heat Transfer and Optimization
- Lattice Boltzmann Simulation Studies
- Probabilistic and Robust Engineering Design
- Risk and Safety Analysis
Oak Ridge National Laboratory
2015-2024
Government of the United States of America
2022
IBM (United States)
2019
North Carolina State University
2017
Argonne National Laboratory
2004-2015
Office of Scientific and Technical Information
2005-2014
National Technical Information Service
2010-2014
University of Chicago
2010-2012
Idaho National Laboratory
2008
Lawrence Livermore National Laboratory
2007
We describe recent algorithmic developments that have enabled large eddy simulations of reactor flows on up to P = 65, 000 processors the IBM BG/P at Argonne Leadership Computing Facility.
This case study presents the results of porting a production scientific code, called NAMD, to SRC-6 high-performance reconfigurable computing platform based on field programmable gate array (FPGA) technology. NAMD is molecular dynamics code designed run large supercomputing systems and used extensively by computational biophysics community. NAMD's kernel highly optimized conventional von Neumann processors; this numerous challenges its reimplementation FPGA architecture. paper an overview...
This paper introduces the use of a Rayleigh backscatter-based distributed fiber optic sensor to map temperature field in air flow for thermal fatigue application. The experiment involves pair jets at 22 and 70 °C discharging from 136 mm hexagonal channels into 1 × 1.7 m tank atmospheric pressure. A 40 m-long, ϕ155 µm was wound back forth across midplane form 16 horizontal measurement sections with vertical spacing 51 mm. configuration generated 2D 2800 data points over 0.76 plane. Fiber...
At 70 miles per hour, overcoming aerodynamic drag represents about 65% of the total energy expenditure for a typical heavy truck vehicle. The goal this US Department Energy supported consortium is to establish clear understanding producing flow phenomena. This being accomplished through joint experiments and computations, leading 'smart' design reducing devices. paper will describe our objective approach, provide an overview efforts accomplishments, discuss future direction.
Large eddy simulations (LES) of the turbulent mixing in a T-junction have been carried out with spectral element code Nek5000 at two inlet velocity ratios. Numerical results compared an available experiment. Proper orthogonal decomposition (POD) has then used to identify most energetic modes turbulence for both and temperature fields. Since POD was also performed on experiment particle image velocimetry (PIV) data, further means verification validation available. The structure numerical time...
Class 8 tractor-trailers are responsible for 11-12% of the total US consumption petroleum. Overcoming aero drag represents 65% energy expenditure at highway speeds. Most results from pressure differences and reducing speeds is very effective. The goal to reduce aerodynamic by 25% which would translate 12% improved fuel economy or 4,200 million gal/year. Objectives are: (1) In support DOE's mission, provide guidance industry in reduction drag; (2) To shorten improve design process, establish...
In collaboration with the U.S. Department of Energy’s Heavy Vehicle Aerodynamic Drag Team, Argonne National Laboratory is developing guidelines for near-term use existing commercial computational tools by heavy vehicle manufacturing industry. These are being developed based upon measured drag coefficients as well detailed surface pressure distributions from wind tunnel experiments completed at NASA Ames using a generalized 1/8 th -scale conventional tractor-trailer geometry, Generic...
In response to the goals outlined by U.S. Department of Energy’s Global Nuclear Energy Partnership program, Argonne National Laboratory has initiated an effort create integrated multi-physics multi-resolution thermal hydraulic simulation tool package for evaluation nuclear power plant design and safety. As part this effort, applicability a variety analysis methods prediction heat transfer fluid dynamics in wire-wrapped fuel-rod bundles found fast reactor core is being evaluated. The work...