ZINK, Imaging Inc.
In this work we have constructed a 2D COMSOL model for the drying of Latex. It is based on a prior 1D model of Kiil, but also includes the effects of a flowing air stream, which is necessary to remove the evaporated water vapor. The model illustrates several features of drying that are not accessible to the 1D model, in particular the a profile in the air/water interface that forms near the ...
C. Anandharamakrishnan, R. Gopirajah, and N. Chhanwal
Central Food Technological Research Institute
Freeze-drying is a popular method of producing shelf stable particulate products and is of particular value for drying thermally sensitive materials (volatiles and biological based), which can be heat damaged by higher temperature methods, such as spray-drying. Porous structures are formed by the creation of ice crystals during the freezing stage, which subsequently sublime during the drying ...
G. Marinaro, A. Accardo, E. Di Fabrizio
Istituto Italiano di Tecnologia, Nanostructures Department, Genova, Italy
Evaporation of sessile droplets is associated with simple phenomena such as the ring-like spot left by a drying coffee droplet. Evaporation rate plays an important role on the convective motion inside the droplet. These fluxes are for example one of the factors responsible for amyloid fibrillation of proteins, a mechanism present in neurodegenerative diseases such as Alzheimer. In our ...
M. Liu, G. Zhao
University of Regina, Regina, SK, Canada
This study presents a oil-gas two-phase linear flow EMH model using COMSOL Multiphysics simulator. Special attention is focused on reservoirs with characteristics for which steam injection is not attractive or feasible such as low permeability, thin-zone, and extra-heavy oil reservoirs. Comparisons showed that cumulative oil production obtained by EM heating is better than what is achieved by a ...
K. J. Suthar, D. C. Mancini, M. K. Ghantasala
Advanced Photon Source, Argonne National Laboratory, Argonne, IL, USA
Physical Sciences and Engineering, Argonne National Laboratory, Argonne, IL, USA
Department of Mechanical Engineering, Western Michigan University, Kalamazoo, MI, USA
The pH-sensitive hydrogels are responsive to the pH of surrounding solution, which often resemble to biomaterials. Recently, pH-sensitive hydrogels are widely used in various devices as sensing media. We present the simulation of swelling characteristic of 3D-arbitarary-geometry, pH-sensitive hydrogel in steady state conditions. Three nonlinear partial-differential equations that are ...
D. Lahaye, L. Cheng
DIAM, EEMCS Faculty, TU Delft, The Netherlands
Tsinghua University, Beijing, China
In the production of high quality materials by a heat treatment, it is indispensable to accurately predict the temperature inside the furnaces being employed. In this work we develop a turbulent combustion model for the heat being released by gas burners inside a shaft kiln. Turbulent combustion is the strongly coupled phenomena of the chemically reacting fuel and oxygen in a turbulent flow. ...
3D COMSOL Multiphysics® Model of a Plate Heat Exchanger to Support a Laboratory Teaching Environment - new
N. Medeiros, W. Clark
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 ...
S. Kadam, A. K. Datta
Department of Biological & Environmental Engineering, Cornell University, Ithaca, NY, USA
Turgor pressure loss and pectin degradation result in texture loss during cooking of plant based materials. To simulate texture loss, a simultaneous heat and moisture transfer, pectin degradation in the cell wall material and solid mechanical model was developed at the microscale using finite elements to predict the homogenized Young’s Modulus of the carrot tissue during heating. The model ...
Stochastic Diffusion of Calcium Ions Through a Nanopore in the Cell Membrane Created by Electroporation - new
O. Henao, V. Gómez, I. De La Pava, J. Sánchez 
Grupo Fisiología Celular y Aplicada, Universidad Tecnológica de Pereira, Pereira, Risaralda, Colombia
We simulated the diffusion of calcium ions through a nanopore created in the cell membrane by electroporation, in presence and absence of the external electric field responsible of the membrane permeabilization. First we solved the set of coupled differential equations that describe the process of ionic diffusion in a 2D nanopore model using the AC/DC Module and the Transport of Diluted Species ...
E. Laurenz, G. Füldner, L. Schnabel
Fraunhofer Institute for Solar Energy Systems (ISE), Freiburg, Germany
Adsorption heat exchangers (AdHXs) are important components in adsorption heat pumps and chillers, a primary energy efficient source of heating and cooling. Due to availability and established inexpensive manufacturing fin-and-tube type heat exchangers with beds of adsorption pellets in the finned space are widely used in state of the art products (Figure 1). For design and optimization the ...