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.

A 2D Inductively Coupled Plasma Chamber Model

Yang Xing [1], Yu Zhang [1], ShaoZhi Deng [1]
[1] State Key Lab of Optoelectronic Materials and Technologies, Guangdong Province Key Lab of Display Material and Technology, School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou, China

Inductively Coupled Plasma Chemical Vapor Deposition (ICPCVD) has been widely used for carbon-based nanomaterial synthesis because it provides high plasma densities and uniform plasma distribution and allows plasma to be generated in room temperature.[1] During the ICPCVD process, the plasma sheath and built-in electric field effectively impact the nanomaterial growth. Since plasma is a highly ...

Establishing Tolerances and Limits of Failure for Sample and Reagent Flow Using COMSOL Multiphysics® Software

S. Kumar [1], D. Dendukuri [1]
[1]Achira Labs, Bangalore, Karnataka.

Microfluidics is the science of manipulating and controlling fluids at the micron scale. Although, fluid flow in standard geometries can be determined easily by analytical methods, a more rigorous computational model is required for custom geometries. Achira’s microfluidics cartridge has a microchannel with intricate curvatures to allow the entrapment of biosensors. The number and dimensions of ...

Frequency Response Analysis of a Printed Circuit Board

S. Mathmann[1]
[1]University of Applied Sciences Bielefeld, Department of Engineering Sciences and Mathematics, Bielefeld, Germany

During a practical course the students compare the measured frequency response of an assembled PCB (Printed Circuit Board) with the simulated data out of COMSOL Multiphysics® software. For this the whole PCB with all components are feed in the simulator and afterwards an eigenfrequency-analysis is carried out. To simplify the effort to do this, a COMSOL® app was created. As result the user ...

Simulating the Effect of Groundwater Flow and Heterogeneity on Borehole Thermal Energy Storage

M. Possemiers [1], L. De Henau [1], J. Van Steenwinkel [1],
[1] AGT - Advanced Groundwater Techniques, Aartselaar, Belgium

In Borehole Thermal Energy Storage (BTES), also called closed loop ground source heat pumps (GSHP) or closed systems, the thermal energy is stored and recovered with a closed hydraulic circuit consisting of one or more boreholes with vertical heat exchangers. The heat exchangers consist of plastic tubes wherein a fluid (commonly a water-glycol mixture) is circulated and absorbs the thermal ...

Comparison of Pipe Flow vs. CFD Module for Homogeneous Liquid Delivery to a Tank in a Cooling Reactor

L. Leis [1], D. Kray [1],
[1] Institute for Energy System Technology INES, University of Applied Sciences, Offenburg, Germany

We consider the fluid dynamics problem of homogeneously filling a large tank by multiple inlets fed from a piping system. Suitable pipe geometries must be chosen so that the volume flow is constant for all inlets. In this work, we compare both for a piping system as depicted in fig. 1: A main pipe is feeding four secondary pipes that deliver the liquid to the tank. The boundary conditions are ...

±800kV 直流输电线路标称电场计算

王平 [1], 李抗 [1], 钦雨晨 [1], 赵映宇 [1],
[1] 华北电力大学

为提高长距离大容量输电的经济性,我国采用特高压直流技术。随着特高压工程的建设和民众电磁环境意识的增强,电磁环境成为影响输电线路结构和建设费用的重要因素。合成电场是特高压输电工程的电磁环境效应之一,其由导线电荷产生的标称电场和空间电荷产生的离子流场组成。标称电场的计算是合成电场计算的前提,本文采用 COMSOL 软件计算了 ±800kV 直流输电线路周围的标称电场。

Mathematical Modeling of Zig-Zag Traveling-Wave Electro-Osmotic Micropumps

J. Hrdlicka[1], P. Cervenka[1], M. Pribyl[1], and D. Snita[1]
[1]Department of Chemical Engineering, Institute of Chemical Technology Prague, Prague, Czech Republic

In this paper we present results of the mathematical modeling of AC electroosmotic micropumps. Unlike others we use the full dynamic description, instead of the linearized model. Skewed hybrid discretization meshes are employed in order to accurately capture the main features of the studied system. Also, we introduce zig-zag electrode arrangements for traveling-wave electroosmotic micropumps. ...

Microstimulation in The Brain: Does Microdialysis Inuence the Activated Volume of Tissue?

D. Krapohl[1][3], S. Loeffler[2], A. Moser[2], and U.G.Hofmann[1]

[1]Institute for Signalprocessing, University of Luebeck, Lübeck, Germany
[2]Institute for Neurology, University of Luebeck, Lübeck, Germany
[3]Department of Information Technology and Media, Mid Sweden University, Sundsvall, Sweden

Deep Brain Stimulation (DBS) has been established as an effective treatment for Parkinson's disease and other movement disorders. The stimulation is currently administered using tetrode-macroelectrodes that target the Subthalamic Nucleus (STN). This often leads to side effects which bias the surrounding areas, e.g. the speech centre. Targeting a specific brain region can better be achieved with ...

Modeling Interface Response in Cellular Adhesion

G. Megali[1], D. Pellicanò[1], M. Cacciola[1], F. Calarco[1], D. De Carlo[1], F. Laganà[1], and F.C. Morabito[1]

[1]DIMET Department, Faculty of Engineering, University “Mediterranea” of Reggio Calabria, Reggio Calabria, Italy

Constitutive properties of living cells are able to withstand physiological environment as well as mechanical stimuli occurring within and outside the body. We examined fluid flow and Neo-Hookean deformation related to the rolling effect. A mechanical model to describe the cellular adhesion with detachment is here proposed. We developed a finite element analysis, simulating blood cells attached ...

Numerical Simulation of a Building Envelope with High Performance Materials

M.H. Baghban[1], P. Jostein Hovde[1], and A. Gustavsen[2]
[1]Civil and Transport Engineering Department, Norwegian University of Science and Technology, Trondheim, Norway
[2]Department of Architectural Design, History and Technology, Norwegian University of Science and Technology, Trondheim, Norway

Simulation tools for building physics problems play an important role in design and understanding the behavior of energy efficient buildings. There are different tools available for simulation of these problems, but each simulation tool has its own advantages and limitations. In this paper, a heat transfer problem in an exterior building wall with high performance materials has been simulated in ...