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Hello I'm looking for information about stiffness modeling of the rotor in the area of large diameter changes. The rotor model I am using is diveded in elements and every element is defined with its iner/outer mass and stiffness diameters. The mass diameters follow the contour of the rotor and...

So that means that I need to know how a magnetic field B change within airgap. When I know the generator data (rated power, terminal voltage, phase current, power factor, field current, field voltage, etc) can I estimate magnetic field within air gap. Sorry for such basic questions, I am not...

There are two different cases: The first is when the rotor is radially shifted constantly. This gives an excitation force acting with twice the rotating frequency. However in reality the misalignment is so small, that this force can be neglected. (???) The second case is more complicated. Due...

I have understand that the peak occurs during the start up of the turbine just when the turbine have reached nominal speed and after a 10-20 min period reduces to normal running conditions. Is this correct? I agree with DAVELEO that this is due to thermal gradients that "blend out&quot...

For internal flow analysis I have used FlowMaster2 and myself-made tools in Excel. I have found Excel is very good tool for simple steady state incompressible analysis within the piping systems, but also for simple compressible analysis.

Electicpete, I am just currently working on large gear/gearbox vibration monitoring procedure. I had also problems finding the appropriete standards and literature about it. According to "The Vibration Monitoring Handbook" from Charles W. Reeves, externally mounted accelometers...