Articles techniques et présentations

Sulfur, which is incorporated in the biomass structure, is released into the product gas during gasification as hydrogen sulfide. Hydrogen sulfide is known to deactivate nickel based steam reforming catalysts by chemisorption on the metal surface during steam reforming process. ... En savoir plus

Immense amounts of methane are stored as gas-hydrate deposits in deep layers of marine sediments. This has raised considerable interest to develop strategies for producing natural gas from marine hydrates. One potential production strategy is the injection of supercritical CO2 into ... En savoir plus

Two finite element models have been developed to investigate the acoustic radiation from a Pratt truss train bridge. The first model was a time dependent structural model that determined the vibration response of the structure due to two wheels, representing a single axle, moving across ... En savoir plus

A current research and development project is ongoing to convert the operating High Flux Isotope Reactor (HFIR) of Oak Ridge National Laboratory (ORNL) from highly-enriched uranium (HEU U3-O8) fuel to low-enriched uranium (LEU U-Mo) fuel. Because LEU HFIR-specific testing and experiments ... En savoir plus

Simulation of components and processes becomes more and more important in industry; therefore it is necessary to train young engineers how to apply simulation software. We established two consecutive courses for graduate students in which we decided to focus on COMSOL Multiphysics®, ... En savoir plus

Reynolds equation is used to analyze fluid flow through small gaps. As such, the solution of Reynolds equation provides critical information for a wide range of tribological problems. In any case where a lubricant resides between two moving surfaces, the Reynolds equation can be used to ... En savoir plus

Quenching from high temperature by fluid flow has been analyzed; when no phase transformation occurs heat transfer is a function of conduction and convection. Flow conditions may lead to turbulent flow that affects the heat dissipation over the surface. Analysis of heat transfer with ... En savoir plus

Articular cartilage is an avascular connective soft tissue in the diarthrodial joints and functions in a highly demanding mechanical environment. The degeneration or wear of the cartilage is a huge problem that effects millions of people every year. The long term objective of the ... En savoir plus

Self-propagating High-temperature Synthesis (SHS), a very economical synthesis of oxides was used in our lab to produce oxide materials. SHS process uses a highly exothermic reaction to convert reactants rapidly to pure products with minimal external energy input. This reaction is ... En savoir plus

This paper illustrates how to set up and solve a two-dimensional flow problem having dimensions of 640 x 320 micro-meter using the Navier-Stokes equations with the help of COMSOL Multiphysics solver. The principle of our pore-scale modeling approach is composed of two steps. The first ... En savoir plus