Technical Papers and Presentations

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.

Assessment of Anterior Spinal Artery Blood Flow following Spinal Cord Injury

M. Alshareef[1], A. Alshareef[2], V. Krishna[3], M. Kindy[3], T. Shazly[4]
[1]College of Medicine, Medical University of South Carolina, Charleston, SC, USA
[2]Department of Biomedical Engineering, Duke University, Durham, NC, USA
[3]Department of Neurosurgery, Medical University of South Carolina, Charleston, SC, USA
[4]Department of Mechanical Engineering, University of South Carolina, Columbia, SC, USA

The incidence of spinal cord injury (SCI) in the US is approximately 12,000 individuals annually, due to various forms of trauma and disease. Diminished flow over a prolonged period of time can cause permanent spinal damage. We constructed a 3D finite element model of the spinal cord to examine the role of compressive loading on spinal blood flow. It was found that the type of forces on the ...

Modeling of Energy Efficient Continuous Sterilisation of ABP from Food Wastes

S. Dalrymple[1], R. Heslop[1]
[1]C-Tech Innovation Ltd. , Capenhurst, United Kingdom

Ohmic heating is a volumetric heating technology which can effectively process almost any pumpable fluid with extremely high energy efficiency (>95%). This is particularly useful for very thick fluids, those that burn on to hot surfaces and those with high solids content which would cause difficulties for conventional heating techniques. Processing of animal by-products (ABP) faces all these ...

Annealing Furnaces Modelisation for Photovoltaïc Applications

J. Givernaud[1]
[1]EMIX, St Maurice La Souterraine, France

The optimisation of dimensions, materials choice of heaters in annealing furnaces are done with COMSOL Multiphysics® in 2D-axisymetry. Heat losses sources are identified and corrective actions can be taken in function of simulation results. A power saving of more than 50% is achieved thanks to simulations.

Improvements on Liquid Cyclotron Target Loading/Unloading System Using COMSOL Multiphysics®

F. Alrumayan[1], A. Alghaith[1], J. Schneider, [1], M. Ahmed [1], M. Al-Qahtani[1]
[1]King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia

A 3D model was developed using COMSOL Multiphysics® to study the flow dynamics of the water inside the geometry of the [13N] Ammonia target for medical application . The image attached shows a 3D model of the target. A significant improvement was noted after modifying the geometry as suggested by the model and delivery time of radioactive solution was dramatically reduced. Water and aluminum ...

2-Dimensional Incompressible and Compressible Mantle Convection - new

Changyeol Lee[1]
[1]Faculty of Earth and Environmental Sciences, Chonnam National University, Gwangju, Republic of Korea

COMSOL Multiphysics® software has been used in computational geodynamics for years. Because very high pressure in the mantle even significantly compressed the mantle up to ~40%, it is crucial to consider the mantle compressibility in computational geodynamics. COMSOL Multiphysics allows consideration of mantle compressibility using the CFD Module and I benchmarked COMSOL Multiphysics using ...

Thermo-fluid Dynamics Modelling of Hydrogen Absorption and Desorption in a LaNi4.8Al0.2 Hydride Bed

D. Baldissin[1] and D. Lombardo[1]
[1]Compumat S.r.l., Torino, Italy

A two-dimensional mathematical model for the absorption and desorption of H2 in LaNi4.8Al0.2 was developed and experimentally validated. The model is composed of an energy balance, a mass balance and a momentum balance. These differential equations are numerically solved by means of the finite element method using the software COMSOL Multiphysics®. From a comparison between theoretical ...

Bio-Effluents Tracing in Ventilated Aircraft Cabins

G. Petrone[1], L. Cammarata[1], and G. Cammarata[1]
[1]Department of Industrial and Mechanical Engineering, University of Catania, Catania, Italy

Ventilation and Indoor Air Quality (IAQ) are issues of very high interest, determining comfortable conditions for occupants and no-contaminated local atmosphere. The aircraft cabins are more confined and have a higher occupant density than other indoor environments such as offices or residential houses. The passengers and the crew share a closed and ventilated cabin, which brings potential risk ...

Modeling an Oscillating Water Foil for Hydro-kinetic Power Generator Using COMSOL 3.5a

R. Kallenberg[1], R. Han[2], and J. Cherry[2]
[1]Kallenberg Enterprises, Fairbanks, AK, USA
[2]University of Alaska Fairbanks, Fairbanks, AK, USA

The research team has devised and patented an oscillating, hydro-kinetic power-generating device for use in river and tidal environments. The interaction of water and the designed foil in a straight rectangular turbulent channel is modeled explicitly using two conservation laws: conservation of momentum and conservation of mass. The incompressible Navier-Stokes application mode in COMSOL 3.5a is ...

Early Breast Cancer Detection using Patient Symptomatic Breast Images by Finite Element Analysis Aided by COMSOL

Tan Ming Sien[1]
Devendran Perumal[1]
Sri Pooveyninthran[1]
Samavedham Lakshminarayanan[2]
Balu Ranganathan[3]

[1]Department of Chemical and Natural Resources Engineering, University of Malaysia Pahang, Pahang, Malaysia
[2]Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, Singapore
[3]Center for Excellence for Fluid Flow Research, University of Malaysia Pahang, Pahang, Malaysia

In this project, we attempted to determine the drug concentration in a breast cancer tumor after a drug has been delivered. We created a COMSOL Multiphysics® finite element model. We investigated the relationship between drug delivery efficiency and parameters such as diffusivity, deepness of the tumor, and the temporal and spatial placement of the transdermal patch that delivers the drug. We ...

Evaporation Induced Convection Under a Gas Channel

H. Machrafi[1], A. Rednikov[2], P. Colinet[2], P.C. Dauby[1]
[1]University of Liège, Thermodynamics of Irreversible Phenomena, Institut de Physique, Liège, Belgium
[2]Universite Libre de Bruxelles, TIPs - Fluid Physics, Bruxelles, Belgium

This work falls into the framework of an ESA experiment, which consists of observing the behavior of patterns and structures that can be formed after instability onset in a HFE7100 liquid layer, evaporating into a nitrogen gas flow. This study is performed by a three-dimensional numerical simulation of the transient temperature and fluid motion. The results show that first several small rolls are ...

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