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A Modified Model for Diffusion in Second-Moment Turbulence Closures
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A study has been carried out to determine the relative roles of the three diffusion sub-processes contained in the Lumley (1978) diffusion model. The three sub-processes are described as being ...
Numerical Modeling of Multidirectional Flow and Heat Transfer in Graphitic Foams
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: To investigate the feasibility of the use of foams with an interconnected spherical pore structure in heat transfer applications, models for heat transfer and pressure drop for this type of ...
A Comparison of Second-Moment Closure Models in the Prediction of Vortex Shedding From a Square Cylinder Near a Wall
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A computational study is presented that examines the capability of various second-moment closure models in the prediction of two-dimensional, nonstationary flow around a square cylinder in proximity ...
Numerical Results for the Effective Flow and Thermal Properties of Idealized Graphite Foam
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: To simulate the heat transfer performance of devices incorporating high-conductivity porous materials, it is necessary to determine the relevant effective properties to close the volume-averaged ...
The Effect of Thermal Contact Resistance at Porous-Solid Interfaces in Finned Metal Foam Heat Sinks
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A numerical study on the effect of thermal contact resistance and its impact on the performance of finned aluminum foam heat sinks has been conducted. Calculations are based on the solution ...
A Dual-Pressure Boundary Condition for use in Simulations of Bifurcating Conduits
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A dual-pressure boundary condition has been developed for computational modelling of bifurcating conduits. The condition involves the imposition of a constant pressure on one branch while adjusting ...
Turbulence-Driven Metal Release from Resuspended Pyrrhotite Tailings
Publisher: American Society of Civil Engineers
Abstract: The use of shallow water covers (up to 2 m) to flood reactive sulfide mine tailings is a common method of reducing the environmental impact of mining. It relies on the low solubility and diffusivity of oxygen in water. In ...
Modeling Forced Convection in Finned Metal Foam Heat Sinks
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A numerical study has been undertaken to explore the details of forced convection heat transfer in finned aluminum foam heat sinks. Calculations are made using a finite-volume computational fluid ...
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