E. Zinterl, and G. Jakopic
JOANNEUM RESEARCH Forschungsgesellschaft mbH,
MATERIALS-Institute for Surface Technologies and Photonics
Heating or cooling of stored fluids by thermal energy exchange with the enclosing walls may be enhanced by improving the efficiency of energy transfer; energy loss to the ambient is equalized for all simulations. Buoyancy driven internal natural convective flow is assumed to be the main energy transfer mechanism. In Newtonian fluids dynamic behaviour is described by the Navier-Stokes ...
Venkataraghavan is the Discover Category Leader, Water, working at the interface of Science, Technology and Business, for developing solutions and products for water purification at Unilever R&D, Bangalore. He joined Unilever in 2002 and earlier worked in interfacial science, materials science and electrodynamics for the Laundry Category. Venkataraghavan also had a stint with Unilever Technology ...
O. Ecin, M. Malek, B. J. Hosticka, and A. Grabmaier
Chair for Electronic Components and Circuits
University of Duisburg-Esse
In this work the authors report on a CFD simulation of a pipe flow model. Fluid mechanics are here combined with heat transfer phenomena. To create a mathematical model of a pulsed hot wire system i.e., the thermo-fluidic impulse response of a pulsed hot wire, a simulation model is going to be analyzed which describes the impulse response according to the physics from thermodynamics. The ...
R. S. Wadhwa, T. Lien, and G. Monkman
NTNU Valgrinda, Inst. for produksjons- og kvalitetstek., Trondheim, Norway
FH Regensburg, Regensburg, Germany
The magnetic field gradient produced by an electromagnet gripper head depends on its design. Stochastic Methods offer certain robustness to the design optimization process. In this paper, Improved Discrete Particle Swarm Optimization (IDPSO) searching technique is applied to the shape and magnetic field gradient optimization of an electromagnet head. The magnetic field and forces are ...
H.-E. Porteanu, and R. Gesche
ICP reactors are usually meter sized and driven at RF frequencies, for example at 13.56 MHz. We developed a miniature resonator allowing an inductive type of coupling of microwaves at 2.45 GHz to a plasma jet, flowing in ceramic tubes. Previous experiments and simulations show an efficient energy transfer of microwaves to plasma of about 80 %. The new development of our ICP structure contains ...
A. Gerisch, S. Tiburtius, Q. Grimal, and K. Raum
Technische Universität Darmstadt, Darmstadt, Germany
Laboratoire d’Imagerie Paramétrique, UPMC, Paris, France
Julius Wolff Institut & Berlin-Brandenburg School for Regenerative Therapies, Charité-Universitätsmedizin Berlin, Berlin, Germany
Musculoskeletal mineralized tissues (MMTs), e.g. bone, are hierarchical composite materials. Their effective elastic properties at different scales are of interest for computational studies of the MMT’s response to mechanical loading but also to realistically simulate implant osseointegration. We combine multi-scale and multi-modal experimental techniques with mathematical modelling of MMTs ...
Combined Analytical and Numerical Modeling of a Resonant MEMS Sensor for Viscosity and Mass Density Measurements
S. Cerimovic, R. Beigelbeck, H. Antlinger, J. Schalko, B. Jakoby, and F. Keplinger
Institute of Sensor and Actuator Systems, Vienna University of Technology, Vienna, Austria
Institute for Integrated Sensor Systems, Austrian Academy of Sciences, Wiener Neustadt, Austria
Institute for Microelectronics and Microsensors, Johannes Kepler University Linz, Linz, Austria
A resonant MEMS sensor for viscosity and mass density measurements of liquids was modeled. The device is based on Lorentz-force excitation and features an integrated piezoresistive readout. The core sensing element is a rectangular vibrating plate suspended by four beam springs. The liquid surrounding the plate influences the resonant behavior of the system. Thus, evaluating the properties of ...
E. Firat, P. Beckhaus, and A. Heinzel
Zentrum für BrennstoffzellenTechnik (ZBT)
A fuel cell stack is a setup of a number of single fuel cells which have to be mechanically compressed each other to ensure good electrical conductivities and tightness against leakage of supplying gases (e.g. hydrogen) and cooling media. In this study a 3D FEM model is developed with COMSOL Multiphysics® to analyze the mechanical design of a fuel cell stack. The material properties of the ...
A. A. Roy, V. Bojarevics, and K. Pericleous
University of Greenwich
The aim of this article is to demonstrate the capability of the software for predicting free-surface motion and internal fluid flow in an electromagnetically levitated sample of liquid metal. Multiphysics solutions which demonstrate the usefulness of Comsol as a powerful MHD simulation tool have been generated to two industrial problems using the ALE moving-mesh module in combination with the ...
S. A. Halvorsen, and N. Kleinknecht
An axially symmetric multiphysics model for industrial induction furnaces has successfully been converted from COMSOL Multiphysics version 3.5a to version 4.2. The model combines computation of magnetic fields, heat transfer and thermal stresses. The inner part of the furnace is described by a few discrete state variables. While the current in the induction coil is input in COMSOL, the model ...