Browsing by Subject "LES"
Now showing items 1-15 of 15
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(2023-07-09)The major challenge in designing oxy-fuel combustors in supercritical power generation cycles is the lack of fundamental understanding of the combustion process at high pressures exceeding the critical point of the fuel ...
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(2015-05-12)Grid-To-Rod-Fretting (GTRF) in PWR fuel assemblies is a major issue of concern to vendors and utilities. Instantaneous pressure fluctuations on a fuel rod surface can help characterize the GTRF potential within a fuel ...
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(2022-07-27)Pressurized Water Reactors (PWRs) are the most common types of electricity generating reactors. Inside of a PWR core, pressurized liquid water is used as a coolant to remove the fission heat generated in the cylindrical ...
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(2018-11-30)Nuclear reactors pump coolant through their core and heat exchangers at massive mass flow rates to sustain energy production. These demanding requirements push engineers to extreme levels of optimization to safely sustain ...
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(2010-07-14)The present work investigates the turbulent jet flow mixing of downward impinging jets within a staggered rod bundle based on previous experimental work. The two inlet jets had Reynold's numbers of 11,160 and 6,250 and ...
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(Texas A&M University, 2006-04-12)We explore the capability of lattice Boltzmann equation (LBE) method for complex fluid flows involving turbulence, mixing, and reaction. In the first study, LBE schemes for binary scalar mixing and multi-component reacting ...
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Massively Parallel Spectral Element Large Eddy Simulation of a Turbulent Channel Using Wall Models (2013-05-01)Wall-bounded turbulent flows are prevalent in engineering and industrial applications. Walls greatly affect turbulent characteristics in many ways including production and propagation of turbulent stresses. While computational ...
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(2019-07-22)The objective of this research is to investigate turbulent flow phenomena in shell-side fluid of a helical coil steam generator (HCSG) for an advanced small modular reactor (SMR) using large eddy simulation (LES). Unlike ...
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Numerical modeling of species transport in turbulent flow and experimental study on aerosol sampling (Texas A&M University, 2007-04-25)Numerical simulations were performed to study the turbulent mixing of a scalar species in straight tube, single and double elbow flow configurations. Different Reynolds Averaged Navier Stokes (RANS) and Large Eddy Simulation ...
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(2022-07-29)This research presents the methodology and the results of numerical studies on turbulent flows in a piping system that resembles the geometry of the Fission Product Venting System (FPVS) in High-Temperature Gas-Cooled Fast ...
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(2012-07-16)Gas turbine engines are the main propulsion source for world wide aviation and are also used for power generation. Even though they rely mainly on fossil fuel and emit climate active gasses, their importance is not likely ...
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(2019-03-20)Methods for transferring heat through convection are highly variable and numerous in application. Still, the principle mechanisms that drive convective heat transfer can be reduced down to thermal conditions, fluid properties, ...
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(2013-07-19)The incompressible Navier-Stokes equations have proven formidable for nearly a century. The present difficulties are mathematical and computational in nature; the computational requirements, in particular, are exponentially ...
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(2020-10-14)The present work will illustrate a series of numerical studies, performed to evaluate the predictive capabilities of various turbulence modeling approaches, applied to a typical pressurized water reactor spacer grid, with ...
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(2023-05-12)Recent advances in machine learning (ML) algorithms, in conjunction with the availability of direct numerical simulation data, have resulted in a surge of interest in data–driven turbulence modelling. The idea with such ...