P. Apell, S. Hjalmarsson, T. Lindberg, I. Wernström, Y. Tarakonov, A. Erichsen Andersson, M. Karlsteen
Department of Applied Physics, Chalmers University of Technology, Göteborg, Sweden
Sahlgrenska University Hospital, Department of Anesthesia, Surgery and Intensive Care, Göteborg, Sweden
Patients undergoing surgery are sensitive to infections. The operation staff may spread 10^4 particles per person per minute, of which ten percent are presumed bacteria-carrying. We visualize the influence of the personnel on the air and particle flows for the two most common ventilation systems in Swedish hospitals using Comsol Multiphysics with particle tracing.. The Laminar Air flow ...
S. Jin, J. McReynolds, X. Li, J. Guan
Department of Biomedical Engineering, College of Engineering, University of Arkansas, Fayetteville, AR, USA
Department of Materials Science and Engineering, The Ohio State University, Columbus, OH, USA
Currently, researchers are looking for ways to mass-produce biologically functional pancreatic beta cells in vitro because of the shortage of donor tissue needed for diabetes cell therapy. The beta cells will become hypoxic if their high oxygen demands are not met. We hypothesized that the biological function of beta cells can be improved if they are cultured in a 3D collagen scaffold, which ...
L. T. Izu, Z. Coulibaly, B. Peercy
University of California-Davis, Davis, CA, USA
University of Maryland, Catonsville, MD, USA
This paper utilizes the COMSOL Multiphysics® general form PDE interface and MATLAB® to model stochastic calcium waves in a sarcomere (basic unit of a heart cell). The model we present here shows the evolution of waves generated from calcium being released stochastically from sites modeled as point sources. The release sites are distributed on z-disc (planes) in a hexagonal pattern, and their ...
M. K. Gobbert, X. Huang, S. Khuvis, S. Askarian, B. E. Peercy
University of Maryland - Baltimore County, Baltimore, MD, USA
This paper presents information on techniques needed in COMSOL Multiphysics® to enable computational studies of coupled systems of PDEs for time-dependent non-linear problems. Furthermore, we demonstrate how to use data files as input for initial conditions. To illustrate the techniques, we consider a system of two time-dependent non-linear PDEs from mathematical biology that couples an ...
E. Lacatus , G. C. Alecu , A. Tudor ,
 Politehnica University of Bucharest, București, Romania
At the forefront of a new generation of sensors graphene and graphene composite materials are intensively studied for medical and biosensing applications. The outstanding electrical, mechanical and quantum properties of graphene make them a promising material solution to overlap the existing gap between biological and non-biological systems into a continuum like-viscoelastic integrated model. ...
A Practical Method to Model Complex Three-Dimensional Geometries with Non-Uniform Material Properties Using Image-based Design and COMSOL Multiphysics®
J. Cepeda, S. Birla, J. Subbiah, H. Thippareddi
Department of Food Science & Technology, University of Nebraska, Lincoln, NE, USA
Department of Biological Systems Engineering, University of Nebraska, Lincoln, NE, USA
Geometries with heterogeneous material properties are typically defined as a set of multiple parts, each part representing a different material. However, assembling or defining the individual parts of complex geometries can be difficult. A practical method based on image-based mesh generation, a custom algorithm for labeling materials, and interpolation functions of COMSOL Multiphysics® can be ...
P. Pattnaik, S. K. Kamilla , Debi Prasad Das
MEMS Design Center, Institute of Technical Education & Research (ITER),Siksha ‘O’ Anushandhan University, Bhubaneswar-751030, Odisha,India
Process Engineering and Instrumentation Cell,Institute of Minerals and Materials Technology (IMMT),Bhubaneswar, Odisha,India
To prevent further complications in diabetes, proper management of blood glucose levels is essential. By using ultrasonic transceivers (both transmit and receive) the glucose level of human blood can be determined. By using this ultrasonic technique miniaturized sensors for non-invasive monitoring blood glucose levels. In this paper Barium Titanate (BT) thin film was used as a transmitter and ...
C. Gavrila, A. Ghiaus, and I. Gruia
Technical University of Civil Engineering Bucharest, Faculty of Building Services, Bucharest, Romania
University of Bucharest, Faculty of Physics, Bucharest, Romania
A dynamic mathematical model, based on physical and transport properties and mass and energy balances, was developed for the simulation of unsteady convective drying of agricultural products (fruits and vegetables) in static bed conditions. The model utilizes water sorption isotherm equations and the change in solid density due to the shrinkage phenomenon. The aim of this article is to describe ...
D. Iber, D. Menshykau, P. Germann, L. Lermuzeaux[2,3]
D-BSSE, ETH Zurich, Switzerland, SIB, Basel, Switzerland
D-BSSE, ETH Zurich, Basel, Switzerland
Department of Bioengineering, University of Nice-Sophia Antipolis, Nice, France
Morphogenesis is a tightly regulated process that has been studied for decades. Previously we developed data-based mechanistic models for a range of developmental processes with a view to integrate the available knowledge and to better understand the underlying regulatory logic. In our previous papers on simulating organogenesis in COMSOL Multiphysics® we discussed methods to efficiently solve ...
B. Granula, K. Porzig, H. Toepfer, M. Gacanovic
University of Banja Luka, Banja Luka, Bosnia-Herzegovina
Technische Universität Ilmenau, Ilmenau, Germany
The prediction of the exact location and intensity of the electric field induced in the human brain during Transcranial magnetic stimulation is a nontrivial computational task. Numerical simulations of the procedure can be used to acquire first approximations in a safe and controlled environment. In order to make this approach more accessible, it is necessary to reduce computation time as much ...