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.

Direct Electrohydrodynamic Simulation of Particle Mobility

A. Verschueren, and P. K. Tomaszewski
Philips Research Laboratories Eindhoven
Micro Systems & Devices group
High Tech Campus 4
Eindhoven, The Netherlands

All particles in suspension have a zeta potential, or surface potential. Its measurement is extremely important for predicting the formulation stability across a wide range of industries including food, ink and pharmaceuticals, water purification and medical devices. Zeta potential is not measurable directly but it can be calculated from an experimentally determined electrophoretic mobility. ...

Heat and Mass Transfer in Reactive Multilayer Systems (RMS)

M. Rühl[1], G. Dietrich[2], E. Pflug[1], S. Braun[2], A. Leson[2]
[1]TU Dresden, Laser and Surface Technology, Dresden, Germany
[2]IWS Dresden, Fraunhofer Institute for Material and Beam Technology, Dresden, Germany

Established joining techniques like welding, soldering or brazing typically are characterized by a large amount of heat load of the components. Especially in the case of heat sensitive structures like MEMS this often results in stress induced deformation and degradation or even damaging of the parts. A back door of this problem are Reactive Multilayer Systems (RMS). These foils consist of ...

Nondestructive Testing of Composites Using Model Based Design

E. Nesvijski[1]

There is a practical interest among composite materials manufacturers to high-speed accurate non-destructive evaluation (NDE) technology for voids inspection when these voids are natural components of such complex structures like resin insulated layer of double-sided copper-clad laminates. Model based design (MBD) of NDE system is one of principal solutions for voids inspection in such ...

Design and Optimization of Highly Sensitive Single Axis Accelerometer using COMSOL Multiphysics®

Kunal A.Kshirsagar[1], K.Govardhan[1],
[1]VIT University, Sensor System Technology, School of Electronics Engineering, Vellore, Tamil Nadu, India
[2]VIT University, MEMS & Sensor Division, School of Electronics Engineering, Vellore, Tamil Nadu, India

Accelerometers are successfully commercialized MEMS devices. COMSOL Multiphysics® has been used in the modeling, simulation and optimizing of this design. The piezoresistive accelerometer is made up of a square proof mass with flexures supporting it. The piezoresistors are placed near the proof mass and frame ends of the flexure and the springs. There is an elongation or shortening of the ...

Thermomechanical Effects of the Packaging Molding Process on the Chip in Integrated Circuits - new

N. Semmar[1], M. Fournier[1], P. S. Alleaume [2], A. Seigneurin [3], , ,
[1]GREMI-UMR7344, CNRS/University of Orléans, Orléans, France
[2]Collegium Sciences et Techniques, Orléans, France
[3]ST Microelectronics Tours SAS, Tours, France

Usually, in integrated circuits, the chip is brazed on leadframe and then, a polymer resin is molded around to create the packaging. On the first hand, the molding process at high temperatures will induce thermomechanical stress on the chip. As the leadframe, the chip and the braze have all different thermoelastic properties, these stress can be critical for the chip connections. To ...

Pulsed Power Accelerator Design with COMSOL Multiphysics® Software - new

D. Reisman[1]
[1]Sandia National Laboratories, Albuquerque, NM, USA

We have developed Thor: a pulsed power accelerator for performing dynamic material experiments. The design was aided by using the COMSOL Multiphysics® software with the AC/DC Module and RF Module. Our design process involved optimizing the impedance of the system while maintaining a good margin against electrical breakdown. By using a three-dimensional electromagnetic model of the entire power ...

Modelling of Reactive Non-Isothermal Mixture Flow and its Simulation in COMSOL Multiphysics® Software - new

V. Orava[1,2], O. Soucek[1], P. Cedula[2]
[1]Charles University in Prague, Prague, Czech Republic
[2]Zurich University of Applied Sciences, Winterthur, Switzerland

I introduce a model of fluidized reactor which, in presence of heterogeneous platinum-based catalyst, decomposes liquid formic acid producing gaseous mixture of carbon dioxide and hydrogen as the product. I treat the physical system as a (Class II) mixture of four constituents - namely formic acid (FA), Platinum micro-pellets (Pt), carbon dioxide (CO_2) and hydrogen (H_2) - which can be, without ...

Improving the Sensoring of PEM Fuel Cell by Numerical Techniques - new

S. Skoda[1], E. Robalinho[2], E. F. Cunha[1], M. Linardi[1]
[1]Instituto de Pesquisas Energéticas e Nucleares - IPEN/CNEN-SP, São Paulo, SP, Brazil
[2]Universidade Nove de Julho - UNINOVE, São Paulo, SP, Brazil

The use of numerical techniques in PEM fuel cell sensoring represents an advantage of project engineering, reducing the costs and accelerating the manufacturing of prototypes. In this work some numerical responses are shown, relating to numerical sensoring of water and oxygen mole fractions at cathode of a 5 cm² of geometric area PEM fuel cell. The need to recognize a geometric figure of merit ...

Analysis of Cost Effective Vertical Axis Wind Turbine (CEVAWT)

H. Shaikh[1], A. Arjun[1], R. Kumbhar[2]
[1]SVERI's College of Engineering, Pandharpur, Maharashtra, India
[2]WIL Walchandnagar, Pandharpur, Maharashtra, India

Wind turbines are the conventional type of energy source. The main focus of this work is the analysis and fabrication of cost effective VAWT. Cost of the turbine is reduced by low cost material and minimizing its total weight. There are two main types of the wind turbines i.e. Horizontal Axis Wind Turbine and Vertical Axis Wind Turbine. Savonious VAWT is preferable for energy generation, because ...

Micromechanical Design of Novel Thermal Composites for Temperature Dependent Thermal Conductivity - new

R. C. Thiagarajan[1],
[1]ATOA Scientific Technologies Pvt. Ltd., Bengaluru, Karnataka, India

Materials with an order variable in thermal conductivity as a function of temperature are desirable for thermoelectric heat energy recovery, building thermal insulation and solar thermal applications. Thermal Conductivity is an inherent material property. Engineering the fundamental thermal conductivity needs manipulation at thermal photon level for conventional materials. Engineering thermal ...