vibration in pipelines
vibration in pipelines
(OP)
Is there an equation/method for determiining the maximum velocity/flow rate of fluid in pipeline before vibration begins?
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RE: vibration in pipelines
RE: vibration in pipelines
In most cases what you have to do is to design a pipe line which has a natural frecuency higher than any spected excitation frecuency. (In other words, a system with vibration sources that would not be close to those that may produce a bad "vibrational" response).
As a rule of thumb, for a well supported steel pipe (following ASME B31 code design criteria for example, with tipical geometries on a plane), excitation frecuencies higher than 30 Hz would not be dangerous (i.e. a fatigue problem would be hardly met).
RE: vibration in pipelines
Daniel
RE: vibration in pipelines
1) bad support system
2) improper support of piping connected to recipricating equipment
3) Slug flow, also known as two phase flow
4) water hammer
Velocity by inself is not going to be a problem. If you have a system that is vibrating it can usally be traced back to one of these four.
EEG
RE: vibration in pipelines
RE: vibration in pipelines