In questa sezione troverete i lavori presentati alle Conferenze mondiali COMSOL. Le presentazioni descrivono ricerche e prodotti innovativi progettati con COMSOL Multiphysics da colleghi di tutto il mondo. I temi delle ricerche presentate abbracciano un'ampia gamma di settori produttivi e aree applicative, in ambito elettrico, meccanico, fluidodinamico e chimico. Lo strumento di Ricerca Rapida vi permetterà di trovare le presentazioni che si riferiscono all'area di vostro interesse.

Investigation Of Bone Marrow Stem Cells In The Bone Marrow Niche In An In Vitro System

P. Lezuo, M. Stoddart, and M. Alini
AO Research Institute, Davos, Grison, Switzerland

We aim to develop an in vitro culture system to mimic the human bone marrow stem cell niche in an artificial perfusion bioreactor environment to culture human adult stem cells. State of the art human bone marrow stem cell research shows that even smallest changes in the physical, thermo dynamical or biochemical environment induce a differentiation of human bone marrow stem cells into other cell ...

Modeling the Performance of Energy Recovery Ventilators

N. Lemcoff[1], R. Pastor[2], and E. Miravete[1]
[1]Rensselaer Polytechnic Institute, Hartford, CT
[2]General Dynamics Electric Boat, Groton, CT

The objective of this study is to numerically evaluate the effectiveness of an energy recovery ventilator (ERV) during the summer and winter seasons. The energy recovery ventilator allows heat and mass transfer between two air streams separated by a membrane. The effects of varying the following parameters were examined: flows through the supply and exhaust ducts, height of the exhaust channel, ...

CFD Analysis of Argon Cell for Pyrochemical Processing

S. Agarwal[1], S. P. Ruhela[1], B. Muralidharan[1], B. P. Reddy[2], B. K. Sharma[1], K. Nagarajan[2], C. A. Babu[3], and K. K. Rajan[1]
[1]Fast Reactor Technology Group, Indira Gandhi Centre for Atomic Research
[2]Chemistry Group, Indira Gandhi Centre for Atomic Research
[3]HBNI & CDG, Indira Gandhi Centre for Atomic Research

An inactive Demonstration facility for the integrated pyroprocess, named High temperature Electrorefining (HTER) facility is in developing stage. This facility is equipped with several types of pyroprocess equipment such as electro-refiner, salt and cadmium distillation equipment, scraping equipment and tilting equipment inside an Argon cell. To operate the argon cell safely, all generated ...

Piezoelectric Transducers and Ultrasound Imaging: Impact of Materials Properties and Multiphysics Aided Design

Marco Cati graduated cum laude and encomium citation in electronic engineering in 2001 from the University of Florence, where in 2005 he also received a Ph. D. degree in electronic engineering. In 2005 he joined the Research & Development Department of Esaote where he is currently in charge of electromagnetic compatibility (EMC) design and testing activities on ultrasound and magnetic resonance ...

Laser Activated Gold Nanorods for the Photothermal Treatment of Cancer

F. Rossi[1], F. Ratto[1]
[1]CNR - Institute of Applied Physics "Nello Carrara", Sesto Fiorentino, Italy

Photothermal therapy through Gold Nanorods (GNRs) is a new approach for the minimally invasive treatment of cancerous tissue. In order to design the proper settings, it is important to study the thermal effect that are induced close to the nanoparticle (nanoscale model), in the close vicinity and in the cancerous tissue (microscale model). A temperature dependent 2D-model of this particular ...

Optimizing Fuel Cell Design with COMSOL Multiphysics

Chin-Hsien Cheng[1]
[1]Renewable Energy RD Center, Chung-Hsin Electric & Machinery, Taiwan

Proton exchange membrane fuel cells (PEMFCs) were investigated using COMSOL Multiphysics with the AC/DC Module and Chemical Engineering Module. Simulation may be used to increase the performance while decreasing the cost of the catalyst later (CL). Experimental validation of single and multi-layer CL was performed for varied PBI electrolyte content. The validated model was used to investigate ...

Analysis of Dielectrophoretic Force by Using COMSOL

Taewoo Lee[1]
[1]Department of Biomedical Engineering, Yonsei University, Seoul, South Korea

Dielectrophoresis is a phenomenon in which a force is exerted on a dielectric particle when it is subjected to a non-uniform electric field. In this research, we analyze dielectrophoretic (DEP) force using a geometry containing two electrodes, one with SiO2 and one without, with a gap between them. The relevant governing equations include the DEP force, the electrohydrodynamic and corresponding ...

Modeling Plant Morphodynamics in Predefined COMSOL Multiphysics® Interface

S. Nikolaev[1], A. Trubuil[2]
[1]Institute of cytology and genetics SB RAS, Novosibirsk, Russia
[2]Institut National de la Recherche Agronomique, Jouy-en-Josas, France

We used a predefined COMSOL Multiphysics® interface to imitate biological growth and shape change (morphodynamics). We found a set of parameters that supply observed morphodynamics for an Arabidopsis embryo during its transition from globular to heart stage.

Microfluidics based Worm Sorter

Koduri V.V.N.R.M Manohar Prasad[1], John Yan[2], Andrew A.Bettiol[2], K.C James Raju[1]
[1]University of Hyderabad, Hyderabad, Andhra Pradesh, India
[2]National University of Singapore, Singapore

The nematode Caenorhabditis elegans is a widely adopted model organism for studying various neurobiological processes at the molecular and cellular level in vivo. With a small, flexible, and continuously moving body, the manipulation of C.elegans becomes a challenging task. A lab-on-a-chip (LOC),is a device that integrates one or several laboratory functions on a single chip of only mm to a few ...

Design and Analysis of Multilayered MEMS Microphone Using COMSOL Multiphysics®

Saranya srinivasa raghavgan[1], Sowmya Srinivasa raghavan[1], Shruti Venkatesh[1]
[1]Rajalakshmi Engineering College, Chennai, India

In this project, we report a design of MEMS microphone that is based on the application of porous silicon in improving the sensitivity of bulk micro machined capacitive pressure sensors. The property of a low Young’s modulus of porous silicon and its dependence on porosity have been exploited to obtain a higher sensitivity compared to pressure sensors with single crystalline silicon membranes. ...

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