Here you will find presentations given at COMSOL Conferences around the globe. The presentations explore the innovative research and products designed by your peers using COMSOL Multiphysics. Research topics span a wide array of industries and application areas, including the electrical, mechanical, fluid, and chemical disciplines. Use the Quick Search to find presentations pertaining to your application area.

The Effect of Different Geometries on the Thermal Mantle Convection

M. Herein, and A. Galsa
Department of Geophysics
Eötvös University
Budapest, Hungary

For the numerical solving of the equations, Comsol has been applied. Simulations have been modeled in 2D Cartesian, in cylindrical coordinate system and in a “mantle-like” cylindrical-shell. Mantle dynamics is controlled by the Rayleigh number (Ra), which is the ratio of the buoyancy and viscous force. The effect of Ra has been studied in the range of 1e4 to 1e7. The significance of the ...

Developments in a Coupled Thermal-Hydraulic-Chemical-Geomechanical Model for Soil and Concrete

S.C. Seetharam[1], D. Jacques[1]
[1]Performance Assessments Unit, Institute for Environment, Health and Safety, Belgian Nuclear Research Centre (SCK•CEN), Mol, Belgium

This paper documents current status in the development of a coupled thermal-hydraulic-chemical-geomechanical numerical suite within COMSOL-MATLAB environment to address soil and concrete applications. The mathematical formulations are based on well-established continuum scale models unifying mass conservation, energy conservation, charge conservation, thermodynamic equilibrium and kinetics and ...

Numerical Study of Flux Models for CO2 - Enhanced Natural Gas Recovery and Potential CO2 Storage in Shale Gas Reservoirs - new

N. Prajapati[1], P. L. Mills[1]
[1]Department of Chemical & Natural Gas Engineering, Texas A&M University, Kingsville, TX, USA

This work encompasses different physics involved in fluid flow in shale gas reservoir. Non-linear equations for fluid flow are solved with COMSOL Multiphysics® PDE module. It focuses on comparing the performance of various species transport flux models by accounting for inter-molecular interactions and gas-rock interactions.

Poroelasticity Benchmarking for FEM on Analytical Solutions

E. Holzbecher[1]
[1]Georg-August Universität Göttingen, Göttingen, Germany

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.

Non-isothermal Flow of CO2 in Injection Wells: Evaluation of Different Injection Modes

O. Silva [1],
[1] Amphos 21 Consulting S.L., Barcelona, Spain

Injection conditions of CO2 at the wellhead may play a major role on the flow behavior through the wellbore. The density and the injection rate reached at the bottomhole are key factors affecting the performance and efficiency of CO2 geological storage. In this work, a model of non-isothermal flow of CO2 in injection wells is developed using COMSOL Multiphysics® software and used to assess ...

Remote Sensing of Electromagnetically Penetrable Objects: Landmine and IED Detection

R. Eze [1], G. Sivulka [2], ,
[1] City University of New York - LaGuardia Community College, Long Island City, NY, USA
[2] Regis High School, New York, NY, USA

The detection, characterization, and classification of underground environmental hazardous objects [mines, IEDs, and other unexploded military hardware] is a worldwide problem that needs urgent attention and solution. While electromagnetic sensor technologies have been applied to identify these hazards, increasingly low dielectric contrast between newer, sophisticated landmines, and complex ...

Poroelastic Models of Stress Diffusion and Fault Re-Activation in Underground Injection

R. Nopper[1], J. Clark[2], C. Miller[1]
[1]DuPont Company, Wilmington, DE, USA
[2]DuPont Company, Beaumont, TX, USA

Stress and failure in the earth have long been observed to couple to hydrogeology. Poroelastic models, introduced by soil scientists, can account for strong two-way coupling between porous crustal rock formations and their pore fluids. Current efforts to provide new energy resources (water injection in EGS, enhanced oil recovery) and to reduce pollution (CO2 sequestration, deepwell disposal) ...

Calibration of a Geothermal Energy Pile Model - new

R. Caulk[1], J. McCartney[2], E. Ghazanfari[1]
[1]University of Vermont, Burlington, VT, USA
[2]University of Colorado, Boulder, CO, USA

In this study, a model of in-situ geothermal energy piles was constructed using COMSOL Multiphysics® software. Geothermal energy piles serve two purposes, first to transfer building load into the subsurface, but also to extract thermal heat from surrounding soils. This is achieved using a heat pump coupled with embedded heat exchangers. As a result, a multiphysics problem is introduced - heat ...

Estimation of Hydraulic Conductivity for a Heterogeneous Unsaturated Soil Using Electrical Resistivity and Level-Set Methods - new

T. K. Chou[1], M. Chouteau[1], J. S. Dubé[2]
[1]École Polytechnique de Montréal, Montréal, QC, Canada
[2]École de Technologie Supérieure, Montréal, QC, Canada

The estimation of the soil saturated hydraulic conductivity (Ks) is crucial in understanding water flow and transport of contaminants. There are many hydrological techniques available in determining this parameter (constant head method, in-situ soil analysis, etc...). While these techniques can provide quality data points, they are often limited by sparse data sampling and scale. Therefore ...

Modeling of the Heat Transfer Between a CO2 Sequestration Well and the Surrounding Geological Formation

B. Sponagle[1], M. Amadu[2], D. Groulx[1], and M. Pegg[2]
[1]Mechanical Engineering, Dalhousie University, Halifax, NS, Canada
[2]Process Engineering and Applied Science, Dalhousie University, Halifax, NS, Canada

In a carbon sequestration system CO2 would be pumped down a well and into a reservoir at supercritical temperatures and pressures. An important consideration is the long term stability of the reservoir. The goal of these simulations is to thermally model the injection well and investigate the temperature gradient developed in the cap rock. Ultimately, results from this study will lead to an ...