Thermal Science 2011 Volume 15, Issue 2, Pages: 545-558
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Numerical and experimental aspects of thermally induced vibration in real rotors
Jevtic Milenko B., Radovanovic Ljiljana Z., Adamovic Zivoslav Z.
Temperature fields in electric energy generators may lead to mechanical
dissbalance of an already balanced rotor. The author collected information in
a number of steam power plants and confirmed the existence of the problem.
This paper is presents the specific case of thermal deformation of the rotor,
caused by an asymmetrical temperature field in scale of rotor. On the grounds
of the relevant physical aspects, we propose a mathematical model identifying
fields in a turbo generator rotor and suggest the optimum control by which
the unwanted effects are eliminated.
Keywords: turbogenerator, vibration, temperature, field, deformation, simulation
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