K. C. Koppenhoefer, J. Thomas, J. S. Crompton
AltaSim Technologies, LLC., Columbus, OH, USA
Computational tools based on the finite element method have been used extensively to develop solutions for elastic and elastic-plastic fracture mechanics problems. This work uses a small-scale yielding model to compare results developed from COMSOL Multiphysics® with another finite element modeling package and analytical solutions. Analysis are conducted for elastic, and elastic-plastic ...
S. Gorelick, M. Leivo, U. Kantojärvi
VTT Technical Research Centre of Finland, Espoo, Finland
Excessive air damping can be detrimental to the performance of oscillating MEMS components. Complex systems, such as structures in pre-etched cavities or angular comb-drive scanning mirrors, typically require simulations to reliably evaluate the air damping. The simulated and experimental performance of the following systems was evaluated and compared: two types of out-of-plane cantilevers, in ...
K.-H. Leitz , P. Singer , A. Plankensteiner , B. Tabernig , H. Kestler , L. S. Sigl ,
 Plansee SE, Reutte, Austria
Selective Laser Melting (SLM) offers great potential for future manufacturing technology. In order to extend its applicability for the processing of high melting materials like molybdenum fundamental process understanding is required. This can be obtained by multiphysical simulations that allow a look into the process. In this contribution a thermo-fluiddynamical simulation model for laser beam ...
D. Nguemalieu. Kouetcha , H. Ramezani , N. Cohaut ,
 Université d’ Orléans, ICMN, UMR CNRS, Orléans France
 Ecole Polytechnique de l' Université d’ Orléans, Orléans, France
The accurate atomic potential determination is an essential task in the molecular simulations, e.g. Grand Canonical Monte Carlo (GCMC). The ab initio simulations using the quantum mechanics would of great interest in the computational physical chemistry. The numerical simulation of the adsorption phenomenon requires knowing the interactions parameters between the atoms that make up the systems ...
V. Runkana, S. Maheshwari, S. Cherlo, RSR Thavva
Tata Research Development and Design Centre, Tata Consultancy Services Ltd., Pune, Maharashtra, India
Polymer hydrogels are commonly used as carriers or vehicles for the controlled release of drugs, primarily because of their bio-compatibility and because rates of drug release can be controlled by manipulating polymer properties like molecular weight, cross linking ratio, etc. Drugs can be released for prolonged periods of time through polymer hydrogels [1, 2]. Sustained drug release may ...
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. H. K. Haertel , K. Engelbrecht , B. S. Lazarov , O. Sigmund ,
 Technical University of Denmark, Roskilde, Denmark
 Technical University of Denmark, Kgs. Lynby, Denmark
1. Introduction The topology optimization method is becoming increasingly popular as a design tool for multiphysics systems [1,2]. Topology optimization of fluid-thermal systems has been presented for example in  for forced convective heat transfer and in  for natural convection problems. In this work, topology optimization including density filtering and projection is applied to ...
A. M. Melcher , C. Ziebert , B. Lei , M. Rohde , H. J. Seifert 
 Karlsruhe Institute of Technology, IAM-AWP, Karlsruhe, Germany
 Karlsruhe Institute of Technology, Karlsruhe, Germany
In this work the coupled electrochemical-thermal model for a lithium-ion battery (LIB) based on porous electrode theory has been extended with contributions coming from exothermic side reactions based on an Arrhenius law to model abuse mechanisms, which could lead to a thermal runaway. These extensions have been modeled with a constant fuel model and for specified current profiles and exterior ...
H. Assi , R. S. C. Cobbold ,
 University of Toronto, Toronto, ON, Canada
INTRODUCTION: Perfectly matched layers (PML) have been widely used for simulating wave propagation in unbounded media to effectively avoid spurious wave reflections from the computational domain boundaries. Time-domain PML formulations, especially for elastic waves, usually use a complex system of first-order equations. Compact second-order time-domain formulations are particularly desired ...
A. Kermani ,
 Veryst Engineering LLC, Needham, MA, USA
Indoor ventilation with good air quality control prevents infection with minimizing the spread of airborne respiratory and other infections in hospitals. CFD can be utilized to optimize flow pattern in clean rooms especially hospital clean rooms. More than two million people in Europe are infected due to Health-care Associated Infection (HAI) (Pittet et al., 2005). It is believed that transfer ...