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.

Modelling of the Wool Textile Finishing Processes

M. Giansetti[1], A. Pezzin[1], S. Sicardi[1], G. Rovero[1]
[1]Politecnico di Torino, Torino, Italy

Within wool textile industries, a very important role is played by the so-called finishing processes, in which the textile substrate undergoes steam treatments to achieve the desired level of stabilisation and appearance. Process parameters, namely temperature and moisture content, are known only at the beginning of the process but not in the textile material being treated, where the actual ...

CO2 Storage Trapping Mechanisms Quantification

A. Nardi[1], E. Abarca[1], F. Grandia[1], J. Molinero[1]
[1]Amphos 21, Barcelona, Spain

The capture and storage of CO2 in deep geological formations is one of the proposed solutions to reduce CO2 emissions to the atmosphere. CO2 is injected as a supercritical fluid deep below a confining geological formation that prevents its return to the atmosphere. In general, four trapping mechanisms are expected, which are of increasing importance through time: (1) structural, (2) residual ...

Cellular Convection in Vertical Annuli at roof slab of Fast Breeder Reactor

M. G. Hemanath[1], C. Meikandamurthy[1], G. Padmakumar[1], C. A. Babu[1], P. Kalyanasundaram[1], and G. Vaidyanathan[1]
[1] Fast Reactor Technology Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, Tamil Nadu, India

In the pool type Fast Breeder Reactors the roof structure is penetrated by a number of pumps and heat exchangers which are cylindrical in shape. Argon gas in reactor is sandwiched between the free surface of sodium and the roof structure and can flow in the annular space between the components and roof structure forming a thermosyphon. These hermosyphons not only transport heat from sodium to ...

Numerical Simulation of Granular Solids’ Rheology: Comparison with Experimental Results

A. Zugliano[1], R. Artoni[2], A. Santomaso[2], A. Primavera[1], M. Pavlicevic[1]
[1]Danieli & C. Officine Meccaniche, Italy
[2]DIPIC - Universita di Padova, Italy

A simulation of the behavior of bulk solids continuously flowing through a silo with internal flow feeders has been performed by means of a dissipative hydrodynamic model. The results obtained by these calculations and those found experimentally agree, not only with regard to the velocity profiles, but also relative to the pressure on the silo walls. The dissipative hydrodynamic model represents ...

Flow of Dry Foam in a Pipe

M. Divakaran[1], S. K. Gupta[1]
[1]Department of Chemical Engineering, Indian Institute of Science, Bangalore, Karnataka, India

Due to the coupling of foam flow with foam generation step, the earlier studies on foam flow have not led to consistent results. An increase in flow rate to obtain ?P vs. Q data changes the foam under investigation itself. The controlled experiments carried out earlier in our group show that ?P increases with flow rate as Q^2/3, a weaker dependence than that known for laminar flow or plug flow ...

Development of a Multiphase, Multispecies Droplet Evaporation Model for Optimization of Desiccation Preservation Techniques

A. Sinkevich[1], S. Bhowmick [1], M. Raessi[1]
[1]University of Massachusetts Dartmouth, North Dartmouth, MA, USA

Biopreservation deals with the protection and storage of complex biologics such as proteins, lipids, and recently, mammalian cells. One preservation method, known as lyopreservation, involves placing a biologic inside a water droplet with some type of sugar excipient (sucrose, trehalose, etc.) and drying the solution convectively. We are currently developing a model that couples the two-phase ...

Coupled Palaehydrogeological Microbial and Geochemical Reactive Transport Model of the Olkiluoto Site (Finland)

P. Trinchero[1], M. Luna[1], J. Molinero[1], G. Román-Ross[1], F. Maia[1], A. Nardi[1], J. Löfman[2], P. Pitkänen[3], L. Koskinen[3]
[1]Amphos 21 Consulting, Barcelona, Spain
[2]VTT Energy, Finland
[3]Posiva Oy, Olkiluoto, Finland

Olkiluoto at Eurajoki has been selected as the final repository site for spent nuclear waste in Finland. This area has been affected, at regional scale, by land-uplift processes related to the ice withdrawal. These events have resulted in a complex and stratified heterogeneous hydrochemical system. The objective of this work was to develop a robust paleohydrogeological reactive transport (PRT) ...

Modeling Maillard Reaction and Thermal Transformations During Bread Baking

D. Papasidero[1], F. Manenti[1]
[1]Politecnico di Milano, Dipartimento di Chimica, Materiali e Ingegneria Chimica “Giulio Natta”, Milano, Italy

One big challenge for the food industry is to predict and optimize flavors. The Maillard reaction occurs in food matrices containing carbohydrates and proteins under specific operating conditions. The presented research couples thermal and kinetic modeling to the bread baking process, an ideal field to study this complex set of reactions responsible for many bread flavors. The thermal model ...

Numerical Investigation for the Effect of Guide Panel on Heat Transfer from Steel Containment

Priyanshu Goyal[1], I. Thangamani[1], V. Verma[1], V.M. Shanware[1], R. K. Singh[1]
[1]Bhabha Atomic Research Centre, Mumbai, India

In a nuclear reactor, the containment is the last barrier for the release of radioactivity during severe accident conditions. Containment material can be concrete or steel or steel-lined concrete. Steel containments have a high load bearing capacity and a high degree of leak tightness at higher pressures. In case of a severe accident, heat can be removed from the containment by a guide panel, ...

Near-Wall Dynamics of Microbubbles in an Acoustical Trap - new

L. Wright[1], G. Memoli[1], P. Jones[2], E. Stride[3]
[1]National Physical Laboratory, Teddington, UK
[2]University College London, London, UK
[3]University of Oxford, Oxford, UK

Understanding the interactions between microbubbles and surfaces is key to the successful deployment of microbubbles in a range of applications. Two important examples are their use as a drug delivery mechanism, and their potential use of acoustically-driven bubbles as microscale sensors. Drug delivery with bubbles involves sonication at high frequency close to a boundary, and sensing with ...