Consultez les proceedings de la Conference COMSOL 2020
Scraping Non-Newtonian Power-Law Paint
A similarity solution to Taylor's paint scraper problem for the flow of a non-Newtonian power-law fluid is presented. A shooting method numerical solution agrees with the results found for Newtonian fluids and is able to capture both shear-thinning and shear-thickening fluids. ... En savoir plus
Simulation of Ground Heat Exchanger for Cryogenic Applications
Ground freezing techniques using liquid nitrogen are commonly used in order to increase the mechanical properties of the soils. This article presents a new ground heat exchanger using aluminum to increase the effective radius of the heat exchanger. Simulation results indicate that the ... En savoir plus
Groundwater Flow and Solute Transport Modeling in the SFR Nuclear Waste Repository
The Swedish Nuclear Fuel and Waste Management Company (SKB) operates the underground repository for low- and intermediate-level nuclear waste (SFR) located in Försmark, Sweden. An extension of the SFR is planned to accommodate mainly waste arising from the decommissioning of Swedish ... En savoir plus
Groundwater Modeling as an Assessment Tool for Underground Mines Located in Fractured Massifs
Some of the present metallic ores mines are located in areas formed by a heterogeneous fractured massif where groundwater flows preferentially through fractures. Underground mining in these zones can cause impacts in streams, lakes and change the natural water balance of the watersheds, ... En savoir plus
Relevance of Hydro-Mechanical-Chemical Processes Involved in the Construction and Operation of Copper Heap Leach Pads
Heap leaching in the mining industry had become a sophisticated practice at least 500 years ago. It is a mineral processing technology whereby piles of crushed Run-of–Mine rock are leached with chemical solutions to extract minerals. The goal of this work is to contribute to the ... En savoir plus
Modeling of Bentonite Hydration Process in a High Level Waste Repository
We deal with a problem of bentonite behavior during the saturation process in a high level waste repository of KBS-3V conception, SKB (2010). Bentonite is a type of clay with specific nonlinear behavior caused by water adsorption and swelling ability in contact with water. We solve ... En savoir plus
Poroelasticity Benchmarking for FEM on Analytical Solutions
We examine the poroelastics mode, which couples hydraulics and mechanics by some basic benchmarks. For cases with analytical solutions we check the accuracy for changing meshes and calculate the convergence rate. En savoir plus
An Innovative Reactive Transport Modeling Approach for the Chemical Evolution of a HLW Cell in the Callovo-Oxfordian Formation
Andra (The French National Radioactive Waste Management Agency) envisages the safe disposal of High-Level Waste (HLW) and Intermediate-Level Long-Lived Waste (IL-LLW) in deep geological storage using a multi-barrier system. To ensure the containment of radioactivity, the principle of ... En savoir plus
Coupled Palaehydrogeological Microbial and Geochemical Reactive Transport Model of the Olkiluoto Site (Finland)
Olkiluoto at Eurajoki has been selected as the final repository site for spent nuclear waste in Finland. This area has been affected, at regional scale, by land-uplift processes related to the ice withdrawal. These events have resulted in a complex and stratified heterogeneous ... En savoir plus
Application of the Focused Impedance Method (FIM) to Determine the Volume of an Object within a Volume Conductor
Focused Impedance Method (FIM), a new technique of electrical impedance measurement having high sensitivity in the central region, can sense the change in transfer impedance of an object embedded at a shallow depth within a volume conductor of unchanging background conductivity, using ... En savoir plus