D. Groulx, and R. Murray
COMSOL Multiphysics can be used to model a latent heat energy storage system. A 2D numerical study was performed to simulate melting of a PCM including both conduction and convective heat transfer. The heat transfer in fluids and laminar flow physics interfaces were used. To model natural convection, proper volume force was applied to the PCM. The viscosity was input as a piecewise, continuous ...
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 ...
Modeling of Ultrasonic Transducers and Ultrasonic Wave Propagation for Commercial Applications Using Finite Elements with Experimental Visualization of Waves for Validation - new
D. R. Andrews
Cambridge Ultrasonics, Over, UK
Finite element (FE) modelling of ultrasonic propagation using COMSOL Multiphysics® simulations can be used to create images of waves. Unfortunately, in time-stepping solutions, it is possible for numerical instabilities to grow large and dominate the solution adversely. Any design of transducer that is based upon poorly-configured FE models is unlikely to perform as expected and will almost ...
University of Manchester, Manchester, UK
This report mainly discusses the implementation and results of a project proposal, “Modelling using Finite Element Methods”. The report is devoted to implementation, which is a model of an electromagnet. The software tool that is used to model the electromagnet is COMSOL Multiphysics®, a commercial FEA package provided by the University of Manchester, Computer Science School. Additionally, the ...
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 ...
E. Varadarajan, M. Bhanusri,
Research and Innovation Centre (RIC), IITM Research Park, Chennai, Tamil Nadu, India
Department of Physics, Indian Institute of Technology (IIT) Madras, Chennai, Tamil Nadu, India
In this paper we made an attempt to maximize the power output in the different piezoelectric materials in a unimorph cantilever beam configuration. In this research, a macro scale unimorph piezoelectric power generator prototypes consists of an active piezoelectric layer, stainless steel substrate and titanium proof mass was designed for frequencies 60 Hz - 200 Hz. An analytical model of a micro ...
S. Gupta, T. Pahwa, R. Bansal, V. Bansal, B. Prasad, D. Kumar
Electronic Science Department Kurukshetra University, Kurukshetra, Haryana
A new design of electrostatic comb drive actuator is presented in this paper by using different spring designs and with different folded beam lengths. An increased displacement of lateral comb drive actuator will subsequently be accomplished with the same actuation voltage. Stress distribution over different spring designs are simulated by COMSOL 3.5a using a standard comb drive with 4 movable ...
Sameer Kolte, David Neihguk, Abhinav Prasad
Mahindra and Mahindra Ltd., Vehicle Integration COE, Mahindra Research Valley, Mahindra World City, Chengalpattu, Tamil Nadu, India
Structural analysis is performed to check the durability of Engine mounts for a given load and support conditions. The engine mount bracket is subjected to loads primarily due to weight of the powertrain and the unbalanced torque. In this analysis, the component is optimized such that stresses generated do not exceed the endurance strength of the material. In this paper, structural mechanics ...