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.

Simulation and Verification of Bionic Heat Exchangers with COMSOL Multiphysics® Software

A. Kremers [1], M. Pieper [1]
[1] Applied University Aachen, Aachen, Germany

Bionics is the scientific discipline between biology and technology. The aim of bionics is to recognize natural design principles and derive technical solutions. Natural structures have been optimized over generations by evolution. In most cases the minimization of the energy demand is a major intend of natural optimization. There are different designs of heat exchangers, e.g. parallel or ...

Numerical Simulation of Auto-Propulsion Mechanism of Microorganism Inside a Microchannel

S. Patra [1], A. Dalal [1], G. Biswas [1], S. Shah [2]
[1] Indian Institute of Technology Guwahati, Guwahati, Assam, India
[2] Indian Institute of Technology Bhubaneswar, Bhubaneswar, Odisha, India

The present study manifests the several ground breaking flow phenomena arising out of hydrodynamic interactions between two microorganisms swimming inside a microchannel with close proximity. The results theorized in the present investigation scrutinizes the varying behavior of the bacteria while moving inside a micro-capillary at different Reynolds number (Re). At high Re, the two swimming ...

2D Axisymmetric Temperature Profile Modeling of a Delayed Coking Drum During Pre-Run Warm Up

P. H. A. Valenca [1], A. Waturuocha [1], K. Wisecarver [1],
[1] Russell School of Chemical Engineering, University of Tulsa, Tulsa, OK, USA

Delayed Coking is a refining process, which takes heavy petroleum residue as a feed. A 2D axisymmetric stationary model was created to simulate this pre-run condition with nitrogen gas, as an attempt to calibrate the model before simulating with an oil residue. The single-phase laminar flow and the heat transfer in fluids modules were used simultaneously. The results show that the model ...

Multiphysical Modelling of Keyhole Formation during Dissimilar Laser Welding

I. Tomashchuk [1], I. Bendaoud [1], P. Sallamand [1], E. Cicala [1], S. Lafaye [2], M. Almuneau [2],
[1] Laboratoire Interdisciplinaire Carnot de Bourgogne (ICB), UMR 6303 CNRS - Université de Bourgogne – Franche Comté, France
[2] Laser Rhône-Alpes, Le Fontanil (Grenoble), France

Time-dependent multiphysical simulation of pulsed and continuous laser welding of dissimilar metals, based on Moving Mesh (ALE) approach, is proposed. Strong coupling between heat transfer, laminar compressible flow and ALE is used. The model was validated for a case of single material (Ti6Al4V alloy) and then applied for studying of keyhole dynamics and melted zone development in a case of ...

Modeling of the Reduction Stage during the Continuous Refining of Copper in a Packed Bed Reactor

F. Mansilla[1], L. Voisin [2]
[1]Advanced Mining Technology Center, Chile University, Santiago, Chile
[2]Department of Mining Engineering, Advanced Mining Technology Center, Chile University, Santiago, Chile

Throughout history, the copper pyrometallurgical processes have been carried out mostly in discontinuous or batch systems. In recent decades new continuous technologies have been developed but focused only on Smelting and Converting stages leaving aside the Refining one. In 2002 a novel technology was proposed by the Department of Mining Engineering of Chile University which consists in two ...

Studying Magnetohydrodynamic Effects in Liquid Metal Flow Under Transverse Magnetic Field Using COMSOL Multiphysics®

S. Sahu[1], R. Bhattacharyay[1], E. Rajendrakumar[1]
[1]Institute for Plasma Research, Bhat, Gandhinagar, India

Liquid metals are foreseen as a multipurpose coolant in fusion blanket systems. However, the strongly magnetic environment of the fusion reactor hinders the regular flow of the liquid metal. It interacts with transverse magnetic field and produces a Lorentz force opposing the flow, modifying the regular flow profile in the circular pipe or rectangular ducts. Complex geometry and lack of ...

Modeling of Kinetic Interface Sensitive Tracers for Two Phase Immiscible Flow in Porous Media with COMSOL Multiphysics® Software - new

A.-B. Tatomir[1], F. Maier[1], A. Jyoti[1], M. Sauter[1]
[1]Geoscience Centre of the University of Göttingen, Göttingen, Germany

The understanding of the tracer migration in two-phase porous media systems and its reaction over the fluid-fluid interfaces is a challenging task important for a number of engineering applications, e.g. oil recovery, carbon capture and storage in geological reservoirs, remediation groundwater contaminations, etc. The goal of this work is to implement in COMSOL Multiphysics® an immiscible two ...

Effect of Substrate Contact Angle on Ink Transfer in Flexographic Printing - new

F. E. Hizir[1], D. E. Hardt[1]
[1]Massachusetts Institute of Technology, Cambridge, MA, USA

Flexography is a roll-based mass printing process used in manufacture of printed products such as sensors, self-cleaning surfaces, and flexible electronics. Flexography involves inking of a stamp wrapped around a roller, and the transfer of ink on the stamp surface to a printing substrate as the roller rotates against it. Ink transfer ratio from the stamp surface to the printing substrate is ...

Cooling and Hardening during Injection Molding of Field Joint Coatings for Deep Sea Pipelines

L. Van Lokeren [1], R. Verhelle [1], S. Loulidi [1], H. Boyd [2], G. Ridolfi [2], G. Van Assche [1]
[1] Vrije Universiteit Brussel, Brussels, Belgium
[2] Heerema Marine Contractors, Leiden, The Netherlands

A multilayer polymer coating is applied to carbon steel pipelines installed in the sea to protect against corrosion and to insulate to maintain the temperature. For field joint coatings, both thermosets (like polyurethane) and semi-crystalline thermoplastics (like polypropylene) are commonly used. To predict the temperature and crystallinity or conversion of the polymer during the cooling ...

A Plasma Torch Model

B. Chiné [1],
[1] Costa Rica Institute of Technology, School of Materials Science and Engineering, Cartago, Costa Rica

Plasma torches are used in processing of materials and in energy industry for producing plasma. In this work we use the Equilibrium DC Discharge physics interface of COMSOL Multiphysics® to model a DC non- transferred arc plasma torch, under hypothesis of local thermodynamic equilibrium. However, to exploit the capability of the software, the model of the DC arc plasma torch is implemented by ...