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 FEM Study of Displacement Sensor Based on Magnetostrictive/Piezoelectric Composite Material

Qingwei Liu [1], Hangjie Mo [1]
[1] Shanghai Jiao Tong University, Shanghai, China

This paper studies the application of laminate magnetoelectric (ME) material in displacement sensor. We studied the L-L block composite thanks to designed structure by coupling displacement signal with the displacement potential of ME composite. A nonlinear approximation is adapted to modeling magnetostrictive phase and implemented in COMSOL Multiphysics® software. The simulation results ...

Modelling Heat and Mass Transfer in Microreactor for Methanol to Hydrocarbons

P. A. Delou [1,3], V. Degirmenci [2,3],
[1] Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
[2] University of Warwick, Coventry, United Kingdom
[3] Queen’s University Belfast, Belfast, United Kingdom

Recently, increasing availability of natural gas, due to the shale gas, raises the attention to the conversion of methane. Methanol-to-Hydrocarbons reaction (MTH) plays an important role in this route where methanol synthesized through syngas is converted into hydrocarbons, such as Gasoline. In this study heat and mass transfer for MTH reaction over ZSM-5 as catalyst for an specific microreactor ...

Simulation and Experimental Characterizations of a Thin Touch Mode Capacitive Pressure Sensor

A.-M. El Guamra [1], D. Bühlmann [1], F. Moreillon [1], L. Vansteenkiste [1], P. Büchler [2], A. Stahel [3], P. Passeraub [1],
[1] HES-SO University of Applied Sciences Western Switzerland, Delémont, Switzerland
[2] Institute for Surgical Technology & Biomechanics, University of Bern, Bern, Switzerland
[3] Bern University of Applied Sciences Engineering and Information Technology, Bern, Switzerland

Introduction: This study describes a thin and low-cost capacitive pressure sensor in touch mode (TM) for monitoring fluid pressure from 0 to 40kPa in fluidic chambers with Luer fittings for medical applications. TM provides good linearity, large measuring range and large overload protection [1]. The choice of a thin polymer membrane as sensitive element with printed circular electrodes reduces ...

A Computational Acoustic Interrogation of Damage to Wind Turbine Blades

R. Canturk [1], M. Inalpolat [1],
[1] University of Massachusetts - Lowell, Lowell, MA, USA

Modern wind turbine blades consist of composite airfoil shaped structures that form a hollow acoustic cavity. Because of continually varying aerodynamic forces, gravitational loads, lightning strikes, and weather conditions, all blades will experience leading and trailing edge splits, cracks, or holes. Acoustic sources (speakers and wind flow) excite this dynamic cavity structure. The blade ...

Non-isothermal Flow of CO2 in Injection Wells: Evaluation of Different Injection Modes

O. Silva [1],
[1] Amphos 21 Consulting S.L., Barcelona, Spain

Injection conditions of CO2 at the wellhead may play a major role on the flow behavior through the wellbore. The density and the injection rate reached at the bottomhole are key factors affecting the performance and efficiency of CO2 geological storage. In this work, a model of non-isothermal flow of CO2 in injection wells is developed using COMSOL Multiphysics® software and used to assess ...

M4B, a Tool for the Analysis of THQM Behavior of Soils and Its Interaction with Building Foundations

J. Alonso [1], V. Navarro [1], M. Moya [1],
[1] Universidad de Castilla la Mancha, Ciudad Real, Spain

The Geoenvironmental Engineering Group of the University of Castilla-La Mancha is developing a computational tool, M4B, for describing the influence of environmental loads on the deformation behavior of soils and its interaction with building foundations. This tool comprises a set of algorithmic files in text format which can be implemented in COMSOL Multiphysics®. To illustrate the M4B scope, ...

Evaluation of Efficiency Factors of Commercial Thermoelectric Materials Using COMSOL Multiphysics® Software

K. Cadien [1], S. Seif [1], T. Thundat [1],
[1] Department of Chemical & Materials Engineering, University of Alberta, Edmonton, AB, Canada

We have developed single leg model using COMSOL Multiphysics® software to compute Φ of TE materials without using conventional ZT parameters. The Φ were calculated using parametric programming in PDE by using special probe to capture change in power (∆P), ΔT, and area (A), thus (Φ = ∆P/A*ΔT 2). The obtained results showed that the TE material with highest Φ when the temperatures are between 375 ...

Simulation of a Dual Axis MEMS Seismometer For Building Monitoring System

M. A. Shah [1], F. Iqbal [1], B. L. Lee [1],
[1] Korea University of Technology and Education, Cheonan, Chungcheong, South Korea

A dual axis MEMS seismometer targeted for building monitoring system has been simulated for a full scale of ±5g acceleration. The design uses the capacitive effect for vibration sensing. This comb drive capacitive MEMS seismometer consists of 8 springs with two proof masses. The device is very low cross axis sensitive (almost negligible cross axis error). The cross axis sensitivity of x-axis is ...

Simulation and Validation of Pan Evaporation Rates Using COMSOL Multiphysics® Software

L. J. Matel [1]
[1] Green Streets Infrastructure LLC, Seattle, WA, USA

The four foot diameter class A evaporation pan is used by the scientific community as the standard for determining evaporation rates for a number of purposes. The COMSOL Multiphysics® software provides the necessary tools to adequately develop synthetic estimates of evaporation values for input into hydrologic simulation models and other earth science applications. This paper presents ...

Optimization of Carbon Nanotube Field Emission Arrays

B. L. Crossley[1], M. Kossler[1], P.J. Collins[1], R. A. Coutu Jr.[1], and L. A. Starman[1]

[1]Air Force Institute of Technology, Wright-Patterson AFB, Ohio, USA

Carbon nanotubes (CNTs) have been proven experimentally to be well suited for field emission applications. An optimized triode configured CNT field emission array is developed using the COMSOL Multiphysics Electrostatics Application to adjust five key physical dimensions to investigate the effects on the enhanced electric field at the CNT emitter tips. The five dimensions studied are CNT ...