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.

Simulating Organogenesis with COMSOL Multiphysics® software: Phase-Field Based Simulations of Embryonic Lung Branching Morphogenesis

L. D. Wittwer [1], R. Croce [1], D. Iber [1],
[1] ETH Zürich, Zurich, Switzerland

While many biological details in organogenesis have been uncovered, fundamental questions regarding the control of growth and shape during lung and kidney morphogenesis remain unsolved. Using mathematical models, we recently showed that only ligand-receptor based Turing models successfully reproduce the experimentally determined growth fields of the embryonic lung and thus provide a mechanism ...

Heat Transfer in Adsorption Heat Exchangers between Pellets and Fins - new

E. Laurenz[1], G. Füldner[1], L. Schnabel[1]
[1]Fraunhofer Institute for Solar Energy Systems (ISE), Freiburg, Germany

Adsorption heat exchangers (AdHXs) are important components in adsorption heat pumps and chillers, a primary energy efficient source of heating and cooling. Due to availability and established inexpensive manufacturing fin-and-tube type heat exchangers with beds of adsorption pellets in the finned space are widely used in state of the art products (Figure 1). For design and optimization the ...

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 ...

Modeling of the Electrochemical Reduction of CO2 to Methanol in a Micro Flow Cell

Y. Kotb [1], S. K. Fateen [2], J. Albo [3], I. Ismail [1],
[1] Renewable Energy Engineering Program, University of Science and Technology, Zewail City, Giza, Egypt
[2] Department of Chemical Engineering, Cairo University, Giza, Egypt
[3] Department of Chemical Engineering, University of the Basque Country, Apdo. 644, Bilbao, Spain

Carbon dioxide levels are increasing faster than in hundreds of thousands of years due to fossil fuels burning. A serious worldwide interest is growing towards the field of CO2 valorization as a step in transitioning away from fossil fuel economy at the same time of decreasing CO2 spiking concentrations. One attractive option is the CO2 electrochemical reduction into fuels, especially methanol ...

Determination of the Load-dependent Thermal Conductivity of Porous Adsorbents

O. Kraft [1], J. Gaiser [1], M. Stripf [1],
[1] University of Applied Sciences, Karlsruhe, Baden-Würtemberg, Germany

Standard measuring techniques for thermal conductivity cannot be readily applied to determine the load-dependent thermal conductivity of porous adsorbents, because the local ad- and desorption inside the specimen and the thickness of the specimen are not considered. Hence, in this work a new measuring procedure combining the transient hot bridge (THB) with a three dimensional finite element ...

Numerical Simulation of Kinetic Interface Sensitive Tracer in Experiment with COMSOL Multiphysics® Software

F. Sun [1], A. Tatomir [1], F. Maier [2], M. Sauter [1]
[1] University of Goettingen, Goettingen, Lower Saxony, Germany
[2] Comsol Multiphysics GmbH, Goettingen, Lower Saxony, Germany

The kinetic interface-sensitive tracers (KIS tracers) are used to give a partial picture of the spreading, mixing and plume migration of supercritical carbon dioxide (scCO2) in the deep saline aquifer by estimating the interfacial areas between scCO2 and brine during the injection of scCO2. To get a better understanding of the KIS tracer reaction and transport processes in the two-phase flow ...

A COMSOL Multiphysics® Software Interface with GEMS3K for Modeling Reactive Transport (Geo)Chemical Processes

O. B. Isgor [1], V. J. Azad [1],
[1] Oregon State University, Corvallis, OR, USA

This paper presents a generic interface for reactive transport process modeling that was developed between the COMSOL Multiphysics® software Java API (transport model) and GEMS3K (reaction model). While the transport of different species, kinetics of dissolution/precipitation, system potentials, fluid and gas flow, etc. can be modeled in a complex chemical system with COMSOL® software, the ...

Simulation of a Supercritical Fluid Extraction Process Using COMSOL Multiphysics® Software

B. Suryawansi [1], B. Mohanty [1],
[1] Indian Institute of Technology Roorkee, Uttarakhand, India.

In the present work, COMSOL Multiphysics® software was used to solve a mass transfer based mathematical model (Stastova et al., 1996) which is a modified form of Sovova H.,1994 model. The modification has been brought about by introducing the term ‘Grinding efficiency’ in the model and the results of the this model has been compared with the theoretical results obtained by Duba and Fiori, 2015 ...

Steps for the Optimization of Pipe and Tubing Extrusion Dies

J.R. Puentes[1], T.A. Osswald[1], S. Schick[2], J. Berg[2]
[1]Polymer Engineering Center, University of Wisconsin, Madison, WI, USA
[2]TEEL Plastics, Baraboo, WI, USA

The extrusion of polyolefin pipes suffers degradation due to mechanical design problems of the extrusion die that is commonly used. This study uses numerical and computational approaches to detect problematic areas in the die geometry. Simulations show that in the conventional die there are areas of stagnation and recirculation of the melt flow, resulting in greater residence times, one of the ...

Mechanistic Modeling of Non-Spherical Bacterial Attachment on Plant Surface Structures

A. Warning [1], A. K. Datta [1],
[1] Cornell University, Ithaca, NY, USA

The particle tracking model provided a deeper understanding to the experimental results. The model showed good agreement with experimental data for rotation, transport and attachment. In the attachment model, protrusions create low velocity, low shear regions increasing attachment while holes pull cells toward the surface and increase residence time on the surface increasing attachment rate.