We propose a simplified numerical method to model the flow field downstream of an axial impeller. The method can be used for any axial hydraulic machinery for which, one is less interested by the flow between the blades, than by the flow... COMSOL Conference 2012, Milan A.-M. Georgescu1 , S.-C. Georgescu2 1 Hydraulics and Environmental Protection Department, Technical University of Civil Engineering, Bucharest, Romania 2 Hydraulics Department, University “Politehnica”, Bucharest, Romania
This paper proposes a framework for an efficient integration between geometric modeling program and analysis tool for a coming automated aerodynamic design optimization mission. This demand can be addressed by using both in-house codes... COMSOL Conference 2012, Milan A. Safari1 , H. Lemu G.1 , H. Severson1 1 University of Stavanger, Stavanger, Norway
Modular orthopaedic devices are a feature of total joint replacements today. These modular orthopaedic devices allowing surgeons to choose from a variety of available implant sizes, designs & material options for the procedure required... COMSOL Conference 2012, Milan M.S. Yeoman1 , A. Cizinauskas1 , D. Rangaswamy1 1 Continuum Blue, Tredomen, Ystrad Mynach, United Kingdom
COMSOL Multiphysics along with its LiveLink™ for MATLAB® is used to investigate the needed number of elements and the required order of Lagrangean p element for a number of different simulation models. For this task, convergence study,... COMSOL Conference 2012, Boston H. Pourzand1 , A.H. Aziz1 , A. Singh1 1 Pennsylvania State University, State College, PA, USA
Use of COMSOL Multiphysics: In operation, the piston ring is surrounded by gas acting on it, using effect of chamfer design has been considered using Love’s equation in conjunction with Stone’s equation for force ad Miler’s equation... COMSOL Conference 2012, Milan M. Dickinson1 , N. Renevier2 , W. Ahmed3 1 Racing to Research team, School of Computing, Engineering and Physical Sciences, University of Central Lancashire, Preston, United Kingdom 2 The Jost Institute, School of Computing, Engineering and Physical Sciences, University of Central Lancashire, Preston, United Kingdom 3 Institute of Nanotechnology and Bioengineering, School of Computing, Engineering and Physical Sciences, University of Central Lancashire, Preston, United Kingdom
Several undergraduate programs include the “Heat transfer” subject and, in our experience, it is hard for the students to grasp the concepts that are presented in the course. With this in mind, we designed and constructed an apparatus... COMSOL Conference 2012, Boston R. López1 , J. Morales*1 , M. Vaca1 , A. Lizardi1 , H. Terres1 , G. Bautista1 , A. Lara1 1 Universidad Autonoma Metropolitana, Tlalpan, Distrito Federal, Mexico
Drying of porous materials is characterized by the invasion of a gaseous phase replacing the evaporating liquid phase. Vacuum drying is an advanced method applied to oakwood to diminish discoloration, so understand its physics is a very... COMSOL Conference 2012, Milan S. Sandoval Torres1 1 Instituto Politécnico Nacional, CIIDIR, Oaxaca, Mexico
The prediction of concrete materials service life is not easy, because the complex heterogeneous microstructure and the random nature of concrete materials. Study the presence of cracks in concrete and their effect on coupled reaction and... COMSOL Conference 2012, Boston Y. Lu1 , E. Garboczi1 , D. Bentz1 1 National Institute of Standards and Technology, Gaithersburg, MD, USA
An experimental program has been developed, with the purpose of evaluating the reliability in building diagnosis and characterization of an integrated analysis of several parameters related to heat transfer process through the building... COMSOL Conference 2012, Milan S. Carcangiu1 , B. Cannas1 , G. Concu2 , N. Trulli3 1 Department of Electric and Electronic Engineering, University of Cagliari, Cagliari, Italy 2 Department of Civil Engineering, Environmental and Architecture, University of Cagliari, Cagliari, Italy 3 Department of Architecture and Planning, University of Sassari, Alghero, Italy
COMSOL Multiphysics was used to design a binocular load cell. A three-dimensional linear solid model of the load cell spring element was studied to quantify the high-strain regions under loading conditions. The load cell was fabricated... COMSOL Conference 2012, Boston A. Marchidan1 , T. Sullivan1 , J. Palladino1 1 Trinity College, Hartford, CT, USA
With the ever changing energy requirements & demand for better communication links across the planet, subsea umbilical & cable requirements are becoming more stringent. Where longer service life at a lower cost is now expected from... COMSOL Conference 2012, Milan M.S. Yeoman1 , V. Sivasailam1 , T. Poole3 , S. Ingham3 1 Continuum Blue, Tredomen, Ystrad Mynach, United Kingdom 3 JDR Cable Systems, Littleport, Cambridgeshire, United Kingdom
Developers of numerical models who address the title problem face several hurdles, such as: (1), the need to formulate boundary conditions applicable in an unbounded region; (2), The need to specify conditions suitable to ensure a unique... COMSOL Conference 2012, Boston J. Russell1 1 Florida Institute of Technology, Melbourne, FL, USA
This study demonstrates that a multiphysics model of a LiFePO4/Li half-cell can be applied to simulate the impedance results from an EIS. However, it implies that the double layer capacitance has to be taken into account, since it is... COMSOL Conference 2012, Milan M. Cugnet1 , I. Baghdadi1 , M. Perrin1 1 INES - CEA, Grenoble, France
Spondylolysis (SL) is a defect of the spinal vertebra, and is typically caused by stress fracture of the pars interarticularis bone of the vertebral arch. It is especially common in adolescents who over train in sporting activities. Spina... COMSOL Conference 2012, Milan M.S. Yeoman1 , C. Quah2 , A. Cizinauskas1 , K. Cooper1 , D. McNally5 , B. Boszczyk2 1 Continuum Blue, Tredomen, Ystrad Mynach, United Kingdom 2 The Centre for Spinal Studies and Surgery, Queen’s Medical Centre, Nottingham, United Kingdom 5 Bioengineering Research Group, Faculty of Engineering, The University of Nottingham, Nottingham, United Kingdom
The Gas Electron Multiplier (GEM) technology has been proven to tolerate rate larger than 50 MHz/cm² without noticeable aging and to provide the sub-millimeter resolution on working chambers up to 45x45 cm² [1]. A new GEM tracker is... COMSOL Conference 2012, Boston F. Noto1 , E. Cisbani2 , F. Librizzi1 , F. Mammoliti3 , C.M. Sutera1 1 Istituto Nazionale Fisica Nucleare - Sezione di Catania, Catania, Italy; Dipartimento di Fisica ed Astronomia, Università di Catania, Catania, Italy 2 Istituto Nazionale Fisica Nucleare - Sezione di Roma, Roma, Italy; Istituto Superiore di Sanità, Roma, Italy 3 Istituto Nazionale Fisica Nucleare - Sezione di Catania, Catania, Italy; Dipartimento di Fisica ed Astronomia, Università di Catania, Catania, Italy
Experiments have been conducted with water at velocities from ~0.015-0.77 m/s to determine the permeability of 50 mm thick commercially available 30, 40, 50 and 80 Pores Per Inch (PPI) Ceramic Foam Filters (CFF) used for liquid metal... COMSOL Conference 2012, Milan M.W. Kennedy1 , K. Zhang1 , J.A. Bakken1 , R.E. Aune1 1 Norwegian University of Science and Technology, Trondheim, Norway
A novel numerical method characterizing groundwater flow in unconfined aquifer is demonstrated. In contrast to the conventional method (Dupuit approach considering horizontal flow only), hydraulic head is simulated in horizontal and... COMSOL Conference 2012, Milan Y. Jin1 , E. Holzbecher1 , S. Ebneth2 1 Department of Applied Geology, Georg-August-University, Göttingen, Germany 2 Hoelscher Dewatering, Haren, Germany
In this work, a MEMS based condenser microphone [1,2] using Polyimide as the diaphragm has been designed. The microphone structure has a backplate placed on top of the diaphragm. The backplate and the diaphragm are made up of polyimide.... COMSOL Conference 2012, Bangalore V. S. Nagaraja1 , Ramanuja H. S.1 , Deepak K1 , S. L. Pinjare1 1 Electronics and Communication Engineering, Nitte Meenakshi Institute of Technology, Bangalore, Karnataka, India
Organogenesis is a tightly regulated process that has been studied experimentally for decades. We are developing mechanistic models for the morphogenesis of limbs, lungs, and kidneys with a view to integrate available knowledge and to... COMSOL Conference 2012, Milan D. Iber1 , D. Menshykau1 1 D-BSSE, ETH Zurich, Basel, Switzerland
The modeling of light propagation through multiple layers of biological tissue are assessed & compared to the theoretical predictions by Perelman at al. [94 & 95] of the most-favorable-path (MFP). The MFP on which photons will be found... COMSOL Conference 2012, Milan M.S. Yeoman1 , E. Sultan2 1 Continuum Blue, Tredomen, Ystrad Mynach, United Kingdom 2 College of Technological Studies, PAAET, Adailiyah, Kuwait
