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Computational Simulation of Electrohydrodynamic Systems Pertaining to Micro and Nano scale Fluid Flow Phenomenon

M. Seiler[1], and B. Kirby[2]
[1]Department of Engineering Physics, Cornell
University, NY, USA
[2]Department of Mechanical Engineering, Cornell
University, NY, USA

Modeling of 3D AC electro-osmotic pumps is relevant to the creation of portable or implantable lab-on-a-chip devices for mm/s tunable fluid flows attainable with battery scale voltages. In this analysis using COMSOL Multiphysics we investigate the modeling challenges of computationally calculating systems of fluid flow phenomena governed by AC Electroosmosis in the micro and nano scale regimes.

Validation of the Acoustic Finite Element Model of a Very Light Jet Cavity Mock-up

F. Teuma Tsafack, K. Kochan, T. Kletschkowski, and D. Sachau
Helmut Schmidt University/ University of the Federal Armed Forces Hamburg, Germany

This paper presents an important step in developing a combined active noise- and audio system for a light jet. To prepare its installation both a wooden mock-up and a finite element model of the investigated cavity were created. Sensitivity analysis and key parameters selection were done in order to validate the model. Error analysis between measured and computed data closes the ...

An Electrodynamic Levitation Device

This model presents a solution to the Transient Electromagnetic Analysis Methods (TEAM) workshop problem 28, “An Electrodynamic Levitation Device”- a benchmark problem involving the dynamic coupling of electromagnetics and rigid body dynamics. An electrodynamic levitation force is produced by the induced eddy currents when a conductive disc is placed above two concentric coils carrying time ...

Modeling of the Impact of Blood Vessels Flow on the Temperature Distribution During Focused Ultrasound Exposure

K.C.P. Li, B.E. O'Neill, and E. Sassaroli
Methodist Hospital Research Institute, Houston, TX, USA

Focused ultrasound systems guided by magnetic resonance imaging (MRI) and thermometry have recently made possible the non-invasive thermal ablation of benign tumors such as uterine fibroids in clinical practice. Much more work is however required in order to make this technology available for the treatment of other forms of cancer. One of the major difficulties is associated with the presence of ...

Long Term Performance Of Borehole Heat Exchanger Fields With Groundwater Movement

S. Lazzari, A. Priarone, and E. Zanchini
DIENCA, University of Bologna, Bologna, Italy

A numerical investigation of the long-term performance of double U-tube borehole heat exchanger (BHE) fields, in the case of non-negligible effects of groundwater movement, is performed by means of COMSOL Multiphysics. Two time periodic heat loads, with a period of one year, are studied: Q1, with a partial compensation between winter heating (principal load) and summer cooling; Q2, with no ...

Modelling of Transport Phenomena and Effect of Applied Electrical Field on Heavy Metals Recovery during Application of the Electro-remediation Process

A. Mahmoud, and J. Beaugrand
Laboratoire de Thermique Energétique et Procédés, ENSGTI, Pau, France

A mathematical model for the simulation of contaminant such as heavy metals removal from soils by electric fields was performed in a 2-D geometry using COMSOL Multiphysics. Electrokinetic phenomena is the result of the coupling between hydraulic and electrical potential gradients in fine grained soils. The model describes the coupled transport of mass and charge of species subjected to an ...

Air Flow Characteristics Inside an Industrial Wood Pallet Drying Kiln

A-G. Ghiaus, M-A. Istrate, and A-M. Georgescu
Technical University of Civil Egineering, Bucharest, Romania

Analysis and optimization of air flow distribution inside drying kiln systems contribute to the improvement of the final product quality. The present study reports on the threedimensional numerical solution of air flow within a drying kiln enclosure. The air flow field is examined in different configurations and operation conditions. Depending on the off/on switched fans, we obtain various air ...

FEM Based Modeling In COMSOL Multiphysics and Design Of Control Of Distributed Parameter Systems

C. Belavý, and G. Hulkó, and K. Ondrejkovic, and D. Šišmišová
Slovak University of Technology in Bratislava, Bratislava, Slovakia

This paper presents a finite element method based modeling and design of control for distributed parameter systems. First, models of distributed parameter systems in the form of lumped-input/distributed-output systems and structure of control loop are introduced. Next, modeling of temperature fields of the casting die as distributed parameter systems in preheating process is performed in COMSOL ...

Computational Building Physics using Comsol: Research, Education and Practice

J. van Schijndel
Eindhoven University of Technology,
Eindhoven, The Netherlands

Jos van Schijndel completed his MSc in 1998 at the Department of Applied Physics at the Eindhoven University of Technology (TUe). In 2007 he obtained a PhD degree at the TUe on integrated heat, air and moisture modeling. Currently, he is assistant professor focusing on Computational Building Physics. His passion is creative computational modeling using state of art scientific software and ...

Lithium-Ion Battery Simulation for Greener Ford Vehicles

D. Bernardi
Ford Motor Company

Dr. Bernardi is a Research Engineer with Ford Motor Company in Dearborn, MI. Her research focuses on the analysis and simulation of electrochemical energy-storage and conversion systems. In particular, Dr. Bernardi develops mathematical models that predict system behavior and identify governing physicochemical processes. Experimental investigations support model development, analysis, and ...

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