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See How Multiphysics Simulation Is Used in Research and Development

Engineers, researchers, and scientists across industries use multiphysics simulation to research and develop innovative product designs and processes. Find inspiration in technical papers and presentations they have presented at the COMSOL Conference. Browse the selection below or use the Quick Search tool to find a specific presentation or filter by application area.

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Modeling of Ultrasonic Transducers and Ultrasonic Wave Propagation for Commercial Applications Using Finite Elements with Experimental Visualization of Waves for Validation

D. R. Andrews[1]
[1]Cambridge Ultrasonics, Over, UK

Finite element (FE) modelling of ultrasonic propagation using COMSOL Multiphysics® simulations can be used to create images of waves. Unfortunately, in time-stepping solutions, it is possible for numerical instabilities to grow large and dominate the solution adversely. Any design of ... Read More

A Semplified Model for the Evolution of a Geothermal Field

L. Meacci[1], A. Farina[1], F. Rosso[1], I. Borsi[1], M. Ceseri[1], and A. Speranza[1]

[1]Dipartimento di Matematica U. Dini, Università degli Studi di Firenze, Firenze, Italy

The problem is to understand how a geothermal field can evolve from a water dominated state into a vapor dominated one. A first answer to this question is given by a simplified mathematical model of the dynamics of a geothermal field in which the geothermal fluid is entirely composed by ... Read More

Modelling of Transport Phenomena and Effect of Applied Electrical Field on Heavy Metals Recovery during Application of the Electro-remediation Process

A. Mahmoud, and J. Beaugrand
Laboratoire de Thermique Energétique et Procédés, ENSGTI, Pau, France

A mathematical model for the simulation of contaminant such as heavy metals removal from soils by electric fields was performed in a 2-D geometry using COMSOL Multiphysics. Electrokinetic phenomena is the result of the coupling between hydraulic and electrical potential gradients in ... Read More

Earthquake and Volcano Clustering at Mono Basin (California)

D. La Marra[1], A. Manconi[2], and M. Battaglia[1]
[1]Dept of Earth Sciences, University of Rome “La Sapienza”, Roma, Italy
[2]IRPI-CNR, Strada delle Cacce, Torino, Italy

This study investigates the feedback between fault slip and dike intrusions during the Mono-Inyo eruption sequence of ~1350 A.D. (Mono Basin, California). We perform an extensive validation of 3D finite element models, implemented in the Structural Mechanics module of COMSOL ... Read More

Integrated Model For Ocean Waves Propagating Over Marine Structures On A Porous Seabed

D-S. Jeng, X. Luo, and J. Zhang
Division of Civil Engineering, University of Dundee, Dundee, Scotland, UK

In this paper, an integrated model for ocean waves propagating over a submerged coastal structure, based on COMSOL Multiphysics, is presented. In the model, Navier-Stoke Equation is solved for the wave propagation and Biot’s poro-elastic model is solved for the porous seabed. The new ... Read More

The Soil as Bioreactor: Reaction-diffusion Processes and Biofilms

M. Richter[1], S. Moenickes[2], O. Richter[2], T. Schröder[1]
[1]BASF SE, Agricultural Center, Limburgerhof, Germany
[2]Institute of Geoecology, TU Braunschweig, Braunschweig, Germany

In a soil pore, water flows through the biofilm, where the density of the latter was assumed to represent a flow resistance. This mechanism was implemented as a local change of fluid viscosity proportional to local biofilm density. It was assumed that diffusive substrate transport is ... Read More

Coupling Heat Transfer in Heat Pipe Arrays with Subsurface Porous Media Flow for Long Time Predictions of Solar Rechargeable Geothermal Systems

P. Oberdorfer[1], R. Hu[1], M. Azizur Rahman[1], E. Holzbecher[1], M. Sauter[1], P. Pärisch[2]
[1]Applied Geology, Geoscience Centre, University of Göttingen, Göttingen, Germany
[2]Institute for Solar Energy Research Hameln/Emmerthal (ISFH), Emmerthal, Germany

An increased share of renewable energies is regarded as an integral part of a strategy towards a sustainable future. With regard to the heat supply sector this may be achieved using solar thermal collectors or heat pump systems with borehole heat exchangers. During the last years solar ... Read More

Modeling of Usage of Air Injection Well in a Geothermal System

X. Ma[1] and J. Grabe[1]

[1]Institude for Geotechnics and Construction Management, Hamburg University of Technology, Hamburg, Germany

Natural groundwater flow can increase the efficiency of geothermal system. But groundwater flow is not available everywhere. A patented new idea is to use air injection well to create artificial flow in sandy or gritty soils. The governing equations of fluid flow and heat transfer ... Read More

COMSOL Implementation for Upscaling of Two-Phase Immiscible Flows in Communicating Layered Reservoirs

X. Zhang, A. Shapiro, and E.H. Stenby
Center for Energy Resources Engineering, Technical University of Denmark, Lyngby, Denmark

Waterflooding is widely used in secondary oil recovery. The physics is described by the model of two-phase flow in porous media. The aim of the present work is to implement this model in COMSOL Multiphysics and to simulate the process of waterflooding. It is analyzed in two dimensions. ... Read More

Modeling Horizontal Ground Heat Exchangers in Geothermal Heat Pump Systems

A. Chiasson
University of Dayton, Dayton, OH, USA

Geothermal heat pumps use the earth as a heat source and sink via a ground heat exchanger (GHX) that consists of a network of buried heat exchange pipes, which can either be installed in vertical boreholes or in shallow horizontal trenches or excavations. The main goal in GHX design is ... Read More

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