Aqui você encontrará apresentações realizadas nas Conferências de Usuários COMSOL de todo o mundo. As apresentações englobam pesquisas e produtos inovadores feitas por engenheiros e cientistas usando o COMSOL Multiphysics. Os tópicos abrangem uma grande gama de indústrias e aplicações, como elétrica, mecânica, escoamento e química. Use a função de busca "Quick Search" para encontrar apresentações na sua área de interesse.

3D COMSOL Multiphysics® Model of a Plate Heat Exchanger to Support a Laboratory Teaching Environment - new

N. Medeiros[1], W. Clark[1]
[1]Worcester Polytechnic Institute, Worcester, MA, USA

Chemical engineering students and practitioners need an understanding of fluid flow and heat transfer inside heat exchangers. Because the flow within plate heat exchangers is difficult to visualize, we developed COMSOL Multiphysics® simulations of plate heat exchangers for students to study alongside a physical heat exchanger in a laboratory setting. Simulative experiments allow students to ...

Simulation of Acoustical Transfer Paths for Active Noise Control

L. Fromme [1], J. Waßmuth [1], D. Wehmeier [1],
[1] Bielefeld University of Applied Sciences, Bielefeld, Germany

The knowledge of the acoustical transfer paths in active noise control systems is very important for the performance of the system. Unfortunately, simulation is challenging since even simple configurations require comprehensive experience in physics and modeling. Two test setups were chosen for basic investigations on modeling, simulation and validation. The first results presented here are ...

Determination of the Load-dependent Thermal Conductivity of Porous Adsorbents

O. Kraft [1], J. Gaiser [1], M. Stripf [1],
[1] University of Applied Sciences, Karlsruhe, Baden-Würtemberg, Germany

Standard measuring techniques for thermal conductivity cannot be readily applied to determine the load-dependent thermal conductivity of porous adsorbents, because the local ad- and desorption inside the specimen and the thickness of the specimen are not considered. Hence, in this work a new measuring procedure combining the transient hot bridge (THB) with a three dimensional finite element ...

Modeling and Characterization of Piezoelectric Structures: From Bulk Material to Thin Film

M. Bavencoffe [1], N. Tembhurnikar [1], B. Negulescu [2], J. Wolfman [2], G. Feuillard [1]
[1] INSA Centre Val de Loire, GREMAN, UMR CNRS 7347, 3 rue de la Chocolaterie, 41034 Blois, France
[2] François Rabelais University, GREMAN, UMR CNRS 7347, Parc de Grandmont, 37200 Tours, France

With the development of micro and nanotechnologies, integrated structures based on piezoelectric thin films are widely investigated and their characterization become a crucial issue for the development of new applications. A laser interferometry is here used to assess the mechanical response in quasistatic regime of a piezoelectric sample. To complete this experimental approach, a numerical ...

A Model to Simulate Laser Ablation in Tumor Using Dynamic Photothermal Coupling Interaction Model

Zhifang Li [1], Xiyang Zhang [1],
[1] College of Photonic and Electronic Engineering, Fujian Normal University, Fuzhou, China

Laser immunotherapy (LIT) was developed to treat late-stage, metastatic cancers through local laser irradiation and immunological stimulation. In ILIT, the photothermal effect induces immune responses by destroying and interrupting tumor cells through temperature elevation in target tissue. Tumor is rich in vascularture, and plays a critical part in photothermal effect. Vascularized tumour ...

Keep it Simple and Learn More - On a Stationary Study of a Time-Dependent Problem

B. Baumann [1], J. Schwieger [1, 2], U. Stein [1], M. Wolff [1],
[1] Hamburg University of Applied Sciences, Hamburg, Germany
[2] University of the West of Scotland, Paisley Campus, United Kingdom

Today’s driver hardware for High-intensity discharge (HID) lamps is bulky, expensive and not particularly energy-efficient. A downscaling of the devices seems possible by increasing the operation frequency from typically 400 Hz to some hundred kilohertz. However, efforts to design high-frequency lamp-driver systems were not successful, since the periodic Joule-heating generates sound waves, ...

How Apps Can Support COMSOL Multiphysics® Users?

G. Petrone [1], C. Barbagallo [1],
[1] BE CAE & Test, Catania, Italy

Disposing of easy-to-use COMSOL Multiphysics® app to exploit FE-based simulations represents an important opportunity for people working in several industrial areas – from the electronics to the process engineering. In supplying consultancy services, Engineers at BE CAE & Test propose their Customers to use COMSOL Multiphysics® apps to run parametric models and carry-out predictive analyses ...

Thermoviscous Acoustics – Piezoelectric Modeling and Simulation of Surface Acoustic Wave Devices

V. M. Dhagat [1], P. Dufilie [2],
[1] University of Connecticut, Mansfield, CT, USA
[2] Phonon Corporation, Simsbury, CT, USA

New drug discovery and development is costly; of all compounds investigated for use in humans, only a small fraction is approved for treatments around the world. The pharmaceutical industry has started switching from molecular drugs to protein-based drugs due to high specificity, enhanced efficacy, affinity, solubility, and low toxicity. The estimated market growth of protein-based drugs is ...

Thermal Analysis of a Latent Heat Storage Based Battery Thermal Cooling Wrap - new

Chiew Hay King Joel [1],
[1] Temasek Polytechnic, Singapore

The most common cause of lithium ion battery failure is high temperature. Improper thermal management strategies can contribute to the temperature related premature battery failure. Excessive heat significantly impacts the performance, safety and cycle lifetime of the lithium ion battery. Therefore, maintaining a lithium-ion battery cell within a safe operating temperature range is crucial for ...

Current Density Simulations in the Electrodeposition from Ionic Liquids: Effects of the Conductivity

I. Perissi[1], C. Borri[1], S. Caporali[1], and A. Lavacchi[1]
[1]Department of Chemistry, University of Firenze, Sesto Fiorentino, FI, Italy

The overall goal of this work is the use of COMSOL Multiphysics® in the modeling of the current density distributions for the electrodeposition of aluminum coatings from ionic liquids. The local current distribution is strongly dependant on the conductivity and on the geometry of the galvanic cell and can only be computed by the numerical solution of the partial differential equations ...