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TSFP DL Home Архив Исполнительный Комитет

INFLUENCE OF AXIAL MISALIGNMENT TO A TMF DRIVEN FLOW

Kristina Koal
Institute of Fluid Mechanics, Technische Universität Dresden, Germany

Silvio Tschisgale
Institute of Fluid Mechanics Technische Universitat Dresden 01062 Dresden, Germany

Jorg Stiller
Technische Universitat Dresden Institute of Fluid Mechanics 01062 Dresden, Germany

Аннотация

The travelling magnetic field (short: TMF) is a commonly used alternating magnetic field, which is applied e.g. to tailor heat and mass transport during crystal growth processes. Numerical studies usually assume ideal configurations such as a perfectly adjusted magnetic field. However, an ideal setup can be hardly realized in "real processes". In the present work, we study the sensitivity of a TMF driven fluid flow within a cylindrical configuration, when a small offset is introduced between the container's axis and that one of the magnetic field. It will be shown, that already a small misalignment affects the flow seriously. Especially in supercritical regimes the mean flow as well as the turbulent structures changes considerably, whereas the variations in the laminar regime correlate approx-imately with the magnitude of the axes' shift.