OOFELIE ElectroTechnics - SAMTECH - #1

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ANALYSES Oofelie::ElectroTechnics allows specific static, harmonic and transient analyses for systems in which conductive currents and their effects have to be taken into account. Concerning the electromagnetic aspects, two class of applications can be envisaged: • Magnetostatic applications are problems in which magnetic fields are constant in time. These kinds of fields can be generated either by constant currents or by permanent magnets. In such problems, the magnetic field is then influenced by the electric field but the electrical field is not influenced by the magnetic field. • Magneto-dynamic applications are problems in which magnetic fields are variable in time. These kinds of fields are usually generated by variable currents. In such problems, the magnetic field is influenced by the electric field (it’s often its source) and the electric field by the magnetic field. For example, in a conductor carrying an alternative current, this current tends to concentrate at the periphery of the conductor as the frequency increases; this phenomenon, associated with magnetism, is called “skin effect”. Also, the computation of electromotive force or eddy currents inside a conductor located in a variable magnetic field is also possible. The methods implemented in Oofelie for the resolution of magneto-dynamic problems are based on the electro-technical approximation. This approximation consists in assuming that the dimensions of the modeled devices are negligible compared to the wavelength associated to the studied phenomena. For example, at 50Hz, the wavelength is 6.000 km, which is much larger than the dimensions of any usual device. MODELING ENVIRONMENT Oofelie::ElectroTechnics is driven by a user-friendly integrated graphicaluser interface, SAMCEF Field, for the modeling, the analysis and the post-processing of electrotechnic systems. SAMCEF Field, a complete and interactive user environment providing all the tools necessary to design, simulate and analyze a range of configurations, has been tailored to approach efficiently the field of electrotechnics Its visual and hierarchically arranged layout will guide you through all the steps of model preparation, resolution procedure and analysis. A CAD modeler, as well as import capabilities from other leading CAD providers, is integrated for modeling and data preparation. As data are directly defined on the geometry, users can easily switch system components modeling level from idealized rigid representation to full Finite Element description. Parameterized data entry is easily done using contextual pull-down menus and pop up boxes using a wide selection of preprogrammed functions for the definition of time and frequency varying properties and boundary conditions. As soon as the analysis is completed, the results are easily accessible from a simple click in the navigator. Results may be displayed in different forms over the whole model or through user’s defined cross-sections to study detailed behavior. In addition to all the state-of-the-art standard graphic outputs (i.e. X-Y plots, isovalues, animations, etc.), results may also be inserted in tabular forms in the analysis report. SAMCEF Field is common to all the solutions provided by Open Engineering, allowing other analyses to be performed on the same model as for electrotechnic simulations. PLATFORMS OOFELIE::ElectroTechnics, driven by SAMCEF Field, is available on Windows and Linux platforms. Oofelie Multiphysics 2010 Oofelie::ElectroTechnics driven by SAMCEF Field, provides engineers and analysts with unique capabilities to analyze electrotechnic systems, such as induction heating, magnetic shielding, multi-phase inductors. With OOFELIE ElectroTechnics, driven by SAMCEF Field, you are getting at the core of the physics in one conveniently integrated simulation package. Oofelie::ElectroTechnics is a Virtual Prototyping tool for the analysis and design of electrotechnic systems, taking into account Joule Heating effects and induced deformations. Through the use of its modeling capabilities, it becomes possible to start simulating the performance of such systems even before a single physical prototype is built. Design changes can be evaluated faster and in a more affordable manner, reducing the number of actual prototypes needed to achieve a required design maturity, thus accelerating significantly product development. Thanks to such a tool, the engineers acquire a capability to isolate and analyze the effect of each parameter. With such insight available at their fingertips, information can be quickly gained to correct or improve previous designs efficiently, knowing which are the influent factors. Reduced design time, improved quality and reduced costs are some of the benefits one can now obtain from using Oofelie::ElectroTechnics. Oofelie::ElectroTechnics Bearings induction heater