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.

Coupled Heat and Moisture Transfer in Building Components - Implementing WUFI® Approaches in COMSOL Multiphysics

B. Nusser[1], M. Teibinger[1]
[1]Holzforschung Austria, Vienna, Austria

Calculating time-dependent heat and moisture transports trough building components are important tasks in the area of building physics. A well known and worldwide used commercial software for this is WUFI®. From the scientific point of view the restricted access to governing equations is nevertheless a drawback of this software. In the present paper it is shown how the physical approaches used ...

Capacitive Deionization for Desalinating Complex Streams - new

D. Cardoen[1,2], B. B. Sales[1], J. Helsen[1], A. Verliefde[2]
[1]VITO, Mol, Belgium
[2]Ghent University, Ghent, Belgium

Capacitive deionization (CDI) is a desalination technology which is based on the storage of ions in the electrical double layer of a pair of oppositely polarized porous carbon electrodes, which are usually assembled using activated carbon particles (Figure 1). It is efficiently deployed for desalinating water with moderate salt content (eg in domestic water softening)[1]. To broaden its ...

A Multiphase Porous Medium Transport Model with Distributed Sublimation Front to Simulate Vacuum Freeze Drying

A. Warning[1], J. M. R. Arquiza[1], A. K. Datta[1]
[1]Cornell University, Ithaca, NY, USA

A continuum, porous medium formulation with non-equilibrium sublimation was developed and validated for freeze drying without and with uniform microwave volumetric heating. The model incorporates the effect of Knudsen flow at low pressure and low permeability freeze drying. The distributed, non-equilibrium sublimation demonstrated that the sublimation front is a sharp boundary for high ice ...

Modelling Waste Water Flow in Hollow Fibre Filters

I. Borsi[1] and A. Fasano[1]
[1]Dipartimento di Matematica U. Dini, Università di Firenze, Firenze, Italy

In this paper we present a model to describe the process of waste water filtration based on hollow-fibre membrane filters. In particular, we deal with membranes whose pores diameter is in the range 0.01-0.1 µm. The main problem in these filtering systems is the membrane fouling. The mathematical model consists in two equations for the Darcy's flow through the filter, coupled with an ...

Numerical Analysis of Mass Transfer Rate in Droplet Flow at Microscopic Scales - new

S. Cito[1], T. Sikanen[1]
[1]Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, Helsinki, Finland

Droplet flow at microscopic scale is often used to enhance many pharmaceuticals and industrial processes (i.e. liquid–liquid micro-extraction, nanoparticle synthesis, slow reactions in microfluidic devices, etc.). In all these processes, the mass transfer rate, at the interface between the droplets and the surrounding fluid of diluted reactants plays a key role. This work at analyzing ...

Flow Distributor Optimization in a Tubular Reactor

J. O. R. Lizarazo [1], L. A. S. Mejía [1], M. I. J. Gutierrez [1], J. A. P. Avella [1],
[1] Grupo de Investigaciones en Minerales, Biohidrometalurgia y Ambiente - GIMBA, Universidad Industrial de Santander, Bucaramanga, Santander, Colombia

In the poster you can see a project where using computational tools like the COMSOL Multiphysics® software, hydrodynamics of a photo electrocatalytic reactor was studied. It was evident that the influential factor is the geometry of inlet and exit header. Therefore, these changes were made to reduce the effects of input/output and thus improve the hydrodynamics of the fluid in the reactor. As a ...

Modeling and Simulation of Flat Sheet Membrane with Physical and Chemical Absorption

N. Ghasem [1], M. Al-Marzouqi [2],
[1] UAE University, Al-Ain, UAE
[2] UAE University, Al-Ain, UAE

Greenhouse gases trap heat and make the planet warmer. The main greenhouse gases emitted by human activities are: Carbon dioxide (CO2). The use of fossil fuel is the primary source of CO2 [1, 2]. Accordingly, there is a need for an efficient and novel separation processes for removal of carbon dioxide from gas streams [3, 4]. Here, a flat sheet membrane contactor is used to remove carbon ...

Optimization of Product from a Segregated Reactor via a Hybrid Modeling Approach

E. Akgün [1], V. Souza [1], J. Appel [1]
Clariant Produkte (Deutschland) GmbH, Burgkirchen, Germany

In the field of chemical reaction engineering chemical kinetics and fluid dynamics are described by various mathematical approaches. Such tools help to shorten the time-to-market of novel products and processes. Thanks to the continuously improving computation power, it is possible to consider the kinetics of chemical reactions as source terms in the Navier-Stokes equations. Even a coupling with ...

Multiphysics Modeling of Swelling Gels

A. Lucantonio[1], P. Nardinocchi[1], L. Teresi[2]
[1]Università degli Studi La Sapienza, Roma, Italy
[2]LaMS - Modelling & Simulation Lab, Università degli Studi Roma Tre, Roma, Italy

Polymer gels belong to the realm of soft active materials as they are capable of responding to a non-mechanical stimulus – the permeation of a solvent – with a mechanical action – a volume change, thanks to the coupling between different physics. This mechanism of coupling can be exploited in a wide range of applications, including biomedical devices, making crucial the understanding of the ...

Simulation and Experimental Analysis of Drug Release Rates from Magnetic Nanocomposite Spheres - new

L. Saeeednia[1], H. Mehraein[2], F. Abedin[1], K. Cluff[2], R. Asmatulu[1]
[1]Department of Mechanical Engineering, Wichita State University, Wichita, KS, USA
[2]Department of Bioengineering, Wichita State University, Wichita, KS, USA

Targeted drug delivery systems have been wildly studied in cancer therapy due to the toxicity of most of chemotherapeutic drugs. Nanoparticles can be attached to the small molecules of the drugs and serve as drug carriers to deliver the drug molecules into the area of interest. In this research, polymeric microspheres containing biodegradable poly(D, L-lactide-co-glycolide) (PLGA), magnetic ...