... coefficient at the end winding bars of large hydro generators. These coefficients are needed for lumped parameter thermal models in the design process. Design/methodology/approach – The computational fluid dynamics simulation in combination with conjugate heat transfer (CHT) validates the accuracy...

... – Computational fluid dynamics (CFD) has been used to include a wide range of different designs, operating conditions and cooling schemes to ensure accurate results for a wide range of possible machines. Neural networks are used to correlate the computed heat transfer coefficients to various design parameters...

...Stephan Klomberg; Ernst Farnleitner; Gebhard Kastner; Oszkár Bíró Purpose – The purpose of this paper is to present a new computational fluid dynamics model for large electrical machines to simulate the heat transfer at specific components to the appropriate ventilation method. The most...

.... The measured data for temperature and air mass flow have been used as boundary conditions for the identification of the convective heat transfer coefficient with a commercial software for computational fluid dynamics (CFD). Findings The measured data for the local convective heat transfer coefficients have...

...Andrezej Demenko; Cezary Jędryczka; Piotr Sujka; Wojciech Szeląg Purpose The purpose of this paper is to elaborate upon the mathematical model of coupled electromagnetic, fluid dynamic and motion phenomena that will allow for investigation of the magnetic hysteresis influence on the axial symmetry...

... operation. © Emerald Group Publishing Limited 2007 Electromagnetic fields Fluid dynamics Finite element analysis Magnetorheological fluids (MRF) are micron‐sized, magnetically polarized particles suspended in carrier fluid. An exposure to an external magnetic field induces a change...

...Hartmut Brauer; Marek Ziolkowski; Milko Kuilekov Purpose The interface between two conducting fluids in a magnetic fluid dynamics (MFD) problem was identified by means of external magnetic field measurements. Genetic algorithms (GA) were applied to solve the inverse problem.The principal component...

...Marek Ziolkowski; Hartmut Brauer; Milko Kuilekov Purpose To provide a new semi‐analytical procedure which is much faster than FEM and for this reason can be applied in a reconstruction of an interface between two conducting fluids (magnetic fluid dynamics problem) by means of magnetic field...

... Publishing Limited 2004 Newton‐Raphson method Fluid dynamics Finite element anaylsis The presented algorithm for solving the equations within the field model of phenomena was applied in a computer program that simulates coupled phenomena in a MR brake. The transients in the prototype...