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Calibration of a Bio-Kinetic Model to Simulate Microalgae Growth - new

A. Solimeno[1], J. Garcia[2]
[1]Department of Hydraulic, Maritime and Environmental Engineering, Universitat Politècnica de Catalunya, Barcelona, Spain
[2]Universitat Politecnica de Catalunya, Barcelona, Spain

The aim of present work is to present and calibrate a new mechanistic model that includes physical and biokinetic processes to reproduce the algae growth in photobioreactor or ponds during long-term scenarios. A COMSOL Multiphysics® model is used to implement the microalgae processes mainly based on River Water Quality Model 1 (RWQM1) (Reichert et al., 2011). The main innovation of the model is ...

Implementation of Immersed Finite Element Method for Fluid-Structure Interaction Applications

N. Nama [1], T. J. Huang [1], F. Costanzo [1],
[1] Department of Engineering Science and Mechanics, Pennsylvania State University, PA, USA

Fluid-structure interaction (FSI) refers to a class of problems in which the motions of fluid and solid are coupled. FSI is of great significance in many applications such as aero-elasticity, biomechanics, and design of various engineering systems. Typically, the multiphysics involved in the FSI problems render them too complex to solve analytically, necessitating the use of numerical ...

Electrowetting and Droplet Transport in Digital Microfluidic Chips for Mixing Applications

S. F. Azam[1]
[1]IIT Hyderabad, Hyderabad, Telangana, India

Over the last decade, electrowetting-on-dielectric (EWOD) has become one of the most blistering and versatile tool in digital microfluidics. It enables control over fluid shape and flow by electrical signals alone, which is viable by effective utilization of the excess charge accumulation at the interface between the droplet and the dielectric surface, also by polarization of line tension at the ...

On the Limitations of Breakthrough Curve Analysis in Fixed-Bed Adsorption

J. Knox [1],
[1] Marshall Space Flight Center - NASA, Huntsville, AL, USA

This work examined in detail the a priori prediction of the axial dispersion coefficient from available correlations versus obtaining it and also mass transfer information from experimental breakthrough data and the consequences that may arise when doing so based on using a 1-D axially dispersed plug flow model in COMSOL Multiphysics® software and its associated Danckwerts outlet boundary ...

Developing Solutions to Tonal Noise from Wind Turbines Using COMSOL Multiphysics® Software

J. M. Stauber [1], B. A. Marmo [1],
[1] Xi Engineering Ltd, Edinburgh, United Kingdom

Tonal noise from wind turbines can have effects on neighboring residences and its emission can result in strong regulatory penalties that can include the closure of wind farms. The authors present a model of a new broadband damping approach where containers filled with EniDamp™, an Advance Particle Damping (APD) material. The containers, so-called APD pods, are magnetically fixed to wind ...

Implementation of a Modified Anisotropic Creep Model for Clays with Use of the Physics Builder

M. Karlsson [1], J. Yannie [1],
[1] Chalmers University of Technology, Gothenburg, Sweden

In this work a modified anisotropic creep model with structure for soft soils was implemented by using the Physics Builder. The model is validated against boundary value laboratory test such as undrained tri-axial tests and CRS (constant rate of strain) tests. The implemented user-defined MAC-s constitutive model seems to capture many of the important behaviors seen in soft soils.

Voltage and Capacitance analysis of EWOD system using COMSOL

D. Das[1], S. Sohail[1], S. Das[2], and K. Biswas[1]
[1]Electrical Engineering Department, IIT Kharagpur, India
[2]School of Medical Science and Technology, IIT Kharagpur, India

Electrowetting on Dielectrics (EWOD)systems is widely practiced digital microfluidic technique, used in Lab-on-a-Chip (LoC) system for biomedical application. In EWOD, with applied potential, the droplet minimizes its surface energy by transiting towards the actuated electrode. The problems with EWOD device for biological sample are that it will damage the cells if applied voltage across it ...

Numerical Analysis of the Phase Change in High Power Latent Heat Storages with 3D Wire Structures

A. Schlott [1], J. Hörstmann [2], O. Andersen [1], J. Meinert [1],
[1] Fraunhofer Institute for Manufacturing Technology and Advanced Materials IFAM, Branch Lab Dresden, Dresden, Germany
[2] Denso Automotive Deutschland GmbH, Department Heat Exchanger Application, Eching, Germany

Latent heat storage devices use the melting enthalpy of a so-called phase change material (PCM) to store thermal energy. Open porous metals, such as 3D wire structures, allow the design of systems with tailored storage capacity and power. A geometric unit cell was identified, modelled and COMSOL Multiphysics® was used to investigate the transient behavior of the PCM melting front. By choosing ...

Simulation of Heating Sol-Gel Thin Film By Laser Pulse Train

J. Zhang[1], Y. Mizuyama[1], W. Xiong[2], Y. Zhou [2], and Y. Lu[2]
[1]Panasonic Boston Laboratory, Newton, MA, USA
[2]University of Nebraska, Lincoln, NE, USA

Simulation of laser pulse-train (25ns, 60 kHz and 3000 pulses) heating Sol-Gel thin film using COMSOL Multiphysics software is investigated. The results show two kinds of temperatures formed on film surface by laser pulse-train heating. One is a single pulse induced transient peak-temperature, which is up to ~1635oC on both Si and glass substrates. The other is the accumulated ...

Finite Element Analysis of Transient Ballistic-Diffusive Heat Transfer in Two-Dimensional Structures - new

S. Hamian[1], T. Yamada[2], M. Faghri[3], K. Park[1]
[1]University of Utah, Salt Lake City, UT, USA
[2]Lund University, Lund, Sweden
[3]University of Rhode Island, Kingston, RI, USA

For the last two centuries, the conventional Fourier heat conduction equation has been used for modeling a diffusive nature of macroscale heat conduction by considering the energy conservation and Fourier's linear approximation of heat flux. However, it cannot accurately predict heat transport when the length scale is comparable to or smaller than the mean free path of thermal energy carriers or ...