Consultez les proceedings de la Conference COMSOL 2020
Novel Approach for Teaching Microchemical Systems Analysis to Chemical Engineering Students Using Interactive Graphical User Interfaces (GUIs)
Chemicals are an integrated part of our daily life. While chemicals are significant contributor to a nation’s economy, sound management of chemical production is essential for environmentally friendly operation without maximizing operational costs. Next generation technologies must be ... En savoir plus
Microscale Simulations of Catalyst Deactivation During Gas-Phase Upgrading of Biomass Pyrolysis Vapors
Catalytic fast pyrolysis is a process by which biomass may be converted into liquid hydrocarbon transportation fuels and chemical co-products that are alternative to their petroleum-derived counterparts. Chemical compounds in raw pyrolysis vapor have high oxygen content and therefore ... En savoir plus
Solar Dryer Exergetic and Energetic Efficiency Analysis
A drying chamber for dehydration purposes is simulated; we model a chamber chimney system coupled to a solar collector as the heat source. Using both, the Heat Transfer Module and CFD Module of COMSOL Multiphysics® software in a 2D geometry we simulate the velocity and temperature field ... En savoir plus
Modeling of Biocalcification in Non-Saturated Conditions
In the context of increasing demographic pressures around the world, soil improvement techniques constitute viable alternatives to expensive foundations. Among these techniques, the biocalcification of granular soils appears as a promising alternative relying on the formation of calcium ... En savoir plus
Permeability in Fragmented Materials and its Application to Underground Mining
The block caving mine is considered by the mining industry as one of the natural replacements of the current open cut mines in the near future. The block caving technique is based on the extraction of small broken rocks, created by blasted initially large solid rocks, and the fracture of ... En savoir plus
Modeling of Porous Catalyst Pellets: Comparison of Diffusion Flux Models for Steam Methane Reforming
Introduction Steam reforming of natural gas has been the most common method for producing synthesis gas (CO + H2) for the production of H2, MeOH and NH3 for over half a century [1]. Production of H2 in the USA using steam methane reforming (SMR) is ca. 9 MM tons/yr. Global production ... En savoir plus
CFD Analysis of a Printed Circuit Heat Exchanger
In this experiment, the performance of a Printed Circuit Heat Exchanger (PCHE) was studied using COMSOL Multiphysics® software. PCHEs are diffusion bonded heat exchangers containing semicircular, chemically etched flow paths. Helium was used as the working fluid on both the hot and cold ... En savoir plus
Simulation of Yield-Stress Fluid in a Rotational Rheometer: The Effect of Vane Geometry on the Accuracy of Measured Properties
A rotational rheometer for Self-Consolidating Concrete was simulated as a yield-stress fluid in a 2D geometry. The effect of the vane geometry was investigated by comparing the analytical solutions with the numerical output for flow in the coaxial cylinders. This effect was studied by ... En savoir plus
COMSOL Multiphysics® Simulation of Flow in a Radial Flow Fixed Bed Reactor (RFBR)
For design of radial flow fixed bed reactors, it is important to ensure proper flow distribution through the catalyst bed. A 2D axisymmetric model of a radial-flow reactor was used to evaluate flow maldistribution through the catalyst bed and the pressure drop through the reactor for a ... En savoir plus
Benchmark Model: Natural Convection of Water-Aluminum Oxide Nanofluids in a Square Cavity
Nanofluids is a new class of fluid consisting of particles in a liquid. Different base liquid has been proposed and the most common one is water. The concentration of these particles can range from 0.1% to 5% or greater. Different numerical models have been proposed to solve this ... En savoir plus