N. Elabbasi, J. Bergstrom, and S. Brown
Veryst Engineering, LLC.
Peristaltic pumping is an inherently nonlinear multiphysics problem where the deformation of the tube and the pumped fluid are strongly coupled. We used COMSOL Multiphysics to investigate the performance of a 180 degree rotary peristaltic pump with two metallic rollers, and an elastomeric tube pumping a viscous Newtonian fluid. The model captures the peristaltic flow, the flow fluctuations ...
J. Knox ,
 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 ...
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 ...
Comparison Between Phase Field and ALE Methods to Model the Keyhole Digging During Spot Laser Welding
V. Bruyere, C. Touvrey, P. Namy
CEA-DAM, Is-sur-Tille, France
SIMTEC, Grenoble, France
Nowadays, spot laser welding is a full-fledged part of industrial manufacturing and is routinely used due to its advantages. It generates very located temperature gradients, and therefore, induces small distortions in the pieces. The COMSOL Multiphysics® software is used to model the interaction stage of an isolated impact made with a Nd:YAG pulsed laser. The free surface evolution has been ...
2D Axisymmetric Simulation of Pulsed Electrochemical Machining (PECM) of Internal Precision Geometries
M. Hackert-Oschätzchen , M. Kowalick , R. Paul , M. Zinecker , D. Kuhn , G. Meichsner , A. Schubert ,
 Professorship Micromanufacturing Technology, Technische Universität Chemnitz, Chemnitz, Germany
 Fraunhofer Institute for Machine Tools and Forming Technology, Chemnitz, Germany
 Professorship Micromanufacturing Technology, Technische Universität Chemnitz, Chemnitz, Germany; Fraunhofer Institute for Machine Tools and Forming Technology, Chemnitz, Germany
This study presents investigations on a developed process design for manufacturing internal precision geometries by pulsed electrochemical machining (PECM) with help of multiphysics simulations. Therefore, a 2D axisymmetric transient model was created. The considered physical phenomena are fluid dynamics, thermodynamics, electrodynamics, the formation and transport of hydrogen as well as ...
A. Nagaraj , P. L. Mills ,
 Texas A&M University - Kingsville, Kingsville, TX, USA
H2SO4 is a very important chemical commodity, and indeed, a nation’s H2SO4 production has been a reasonably good indicator of its industrial strength for the last century or so1,2. Nearly 350 MM tons of H2SO4 was produced in 20143.The demand for H2SO4 in United States exceeds the supply and hence to increase production, recycling and innovative clean technologies must be explored. From ...
COMSOL Multiphysics® Software and PV: A Unified Platform for Numerical Simulation of Solar Cells and Modules
M. Nardone ,
 Bowling Green State University, Bowling Green, OH, USA
Introduction: Existing solar cell (photovoltaic, PV) device simulation software is either open source with limited capabilities (1D only) [1,2] or extremely expensive with obscure functionality . PV researchers need an accessible and versatile simulation tool to optimize existing technologies and to reduce the time from concept to prototype for new technologies. This work demonstrates how ...
Y. T. Habtemichael, R. T. Kiflemariam, H. R. Fuentes
Department of Civil & Environmental Engineering, Florida International University, Miami, FL, USA
Department of Mechanical & Materials Engineering, Florida International University, Miami, FL, USA
Seawater intrusion into coastal aquifers is usually modeled by using transport models that include account for the effect of variable-density on flow. Variable-density models can be validated with the Henry and Elder benchmark problems. However, when mixed convective flow is simulated under variable density conditions, it is susceptible to physical and numerical instabilities. The purpose of ...
Z. Zheng, R. Zhang
Corning Incorporated, Corning, NY, USA
Introduction: Glass relaxation occurs in a range of temperature during transition from equilibrium to super-cooled liquid. Viscoelastic material model can be applied to simulate glass behavior during the glass transition regime and to predict the glass deformation and stress evolution. Viscoelasticity is the property of materials that exhibit both viscous and elastic characteristics when ...
A. K. Reddy, T. Satyanarayana
Lakireddy Balireddy Autonomous College of Engineering, Mylavaram, A.P., India
The present work reports the fabrication process of micro lens for pinhole cameras, modeled using COMSOL Multiphysics®, by satisfying the wetting properties. Wetting is a change in contact angle between the liquid and solid surface area. The wetting properties are clearly understood in terms of forces. The two immiscible fluids were taken for the formation of fluid-fluid and wall-fluid ...