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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.

Virtual Prototype Evolution by COMSOL Multiphysics® of a Continuous Flow Animal By-Products ABP Ohmic Sterilization Unit - new

R. Heslop[1]
[1]C-Tech Innovation Ltd., Capenhurst, Cheshire, UK

Ohmic heating (Joule 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) ...

Wall Effects in Convective Heat Transfer from a Sphere to Power Law Fluids in Tubes

D. Song[1], R. Gupta[1], and Chhabra[2]

[1]West Virginia University, Morgantown, West Virginia, USA
[2]Indian Institute of Technology, Kanpur, India

Heat transfer from a sphere having a uniform temperature and falling axially in a cylindrical tube filled with an incompressible power-law liquid is numerically investigated. The governing equations for simultaneous flow around a confined sphere and heat transfer to power-law fluids were solved numerically using COMSOL Multiphysics. It was found that the wall effects on the mean Nusselt number ...

Objects in a Windtunnel Simulated With COMSOL

H. van Halewijn
Fontys Hogeschool
Applied Physics
Eindhoven, The Netherlands

For the educational program of Fluid Dynamics at the Fontys Hogeshool of Applied Physics, a wind tunnel was developed for tests of flow profiles of objects, such as a ball, cube or plate. Students are expected to measure the air resistance of a variety of objects, and verify the measurements with the turbulent CFD module of COMSOL. The measurements and the COMSOL simulations match nicely, and ...

Application of COMSOL Multiphysics in the Simulation of Magnesium Refining and Production

X. Guan[1], E. Gratz[1], U. Pal[1]
[1]Division of Materials Science and Engineering, Boston University, Brookline, MA, USA

Computational fluid dynamics (CFD) modeling is a useful tool to gain an insight into various high temperature metallurgical processes such as the magnesium refining and the magnesium solid oxide membrane (SOM) electrolysis. In both processes, argon gas was used to stir the molten salt (flux) in order to improve the transport of magnesium vapor out of the flux and achieve chemical homogeneity in ...

Thermal Natural Convection Simulations with COMSOL Multiphysics® in Comparison with Measurements - new

H. van Halewijn[1]
[1]Fontys University of Applied Physics, Eindhoven, The Netherlands

In a laboratory setup a horizontal rod is heated on one side. By natural convection a stable temperature pattern is developed. Using the Nusselt formulation of the natural convection of cylindrical rods, the temperature distribution can be calculated. Only a good match of the simulations and the measurements can be reached when taking into account all the non-linear physics in the system. In this ...

Prediction of Temperature and Thermal Stress in Plasma Sprayed Coatings - new

M. Raja[1] , G. Hiremath[1], K. Ramachandran[1], P.V.A. Padmanabhan[2], T.K. Thiyagarajan[2]
[1]Karunya University, Coimbatore, Tamil Nadu, India
[2]Bhabha Atomic Research Centre, Mumbai, Maharashtra, India

Plasma spraying is one of the prominent technologies for wear, corrosion and high temperature resistant coatings. The coating quality is very important to increase the performance of the components as well as to protect the outer surface of the component from external environment. The coating quality characteristics depend on many plasma process parameters. Among these parameters, distribution of ...

CFD Analysis of Loss Of Vacuum Accident for Safety Application in Experimental Fusion Reactor Facility

C. Bellecci[1], P. Gaudio[1], I. Lupelli[1], A. Malizia[1], M.T. Porfiri[2], R. Quaranta[1], and M. Richetta[1]

[1]EURATOM, Faculty of Engineering, University of Rome “Tor Vergata”, Roma, Italy
[2]ENEA Nuclear Fusion Tecnologies, Frascati, Roma, Italy

In an experimental nuclear fusion facility dust is generated both during normal machine operations and by macroscopic erosion of the plasma facing materials due to intense thermal loads. This dust can be mobilized by air ingress in case of LOVA (Loss of Vacuum Accident) threaten safety of workers and public. A small facility, Small Tank for Aerosol Removal and Dust (STARDUST), was set up in order ...

Coupled Heat and Mass Transfer Processes in Enclosed Environments

J.L.Wilson[1], and R. Dwivedi[1]

[1]New Mexico Institute of Mining and Technology, Socorro, New Mexico, USA

Geothermally driven natural convection in enclosures is a ubiquitous process occurring in many physical environments such as caves, mines, etc. We have numerically simulated laminar and turbulent natural convection in isolated air-filled cavities, buried in a more conductive rock mass. We have modeled heat transfer using COMSOL's Convection and Conduction mode. To better understand the convective ...

Formation Of Porosities During Spot Laser Welding : Case Of Tantalum Joining

C. Touvrey
CEA Valduc, France

During the welding of tantalum with a ND: YAG pulsed laser, a deep and narrow cavity, called the keyhole, is formed. At the end of the process, surface tension forces provoke the collapse of the keyhole. For important interface deformations, gas bubbles can be trapped into the melting pool. If the solidification time is insufficient, these bubbles give birth to residual porosities. The aim of the ...

Inverse Estimation of the Flow Resistivity Tensor of Open-Cell Foams from Experimental Data and Darcy’s Flow Simulations

C. Van der Kelen, P. Göransson, and N-E.Hörlin
Marcus Wallenberg Laboratory for sound and vibration research, KTH Aeronautical and Vehicle Engineering, Stockholm, Sweden

The flow resistivity tensor, which is the inverse of the viscous permeability tensor, is one of the most important material properties for the acoustic performance of open cell foams, used in acoustic treatments. Due to the manufacturing processes, these foams are most often geometrically anisotropic. This paper discusses the estimation of the flow resistivity tensor using an improvement of a ...