slug induced pipe vibration

[Pete17]

I was hoping someone could give me some information regarding the modelling of pipe vibration due to slug flow. It seems that there would be two main mechanisms of vibration.

Firstly simply from the momentum change of the slugs at the pipe bends etc. Secondly from the "saw-tooth" pressure profile along the pipe (ie. the pressure across a gas bubble is relatively constant, but there is a presure drop across each slug, producing a 'saw-tooth' profile along the pipe).

Does anyone have any knowledge or literature concerning this second phenomena? It seems to be relatively unknown or simply just ignored.

Any help on this or any information on slug flow vibration modelling would be greatly appreciated.

Thanks

 

[KernOily]

Are you talking about the high transient short-term nonlinear vibration set up when a slug passes (more like a reaction force from the momentum change), or are you looking for a steady-state vibration set in motion by the passing of the slug? Thanks!
Pete

 

[Pete17]

Wouldn't both be important?

If the velocity of the slugs and their length are assumed to be constant, then I was hoping to model the force due to momentum change as a short pulse over the duration of each arriving slug (ie. a force occuring at a constant time interval).

This force (at the right frequency) would induce steady-state vibrations in the pipeline. Is this right?

Please keep in mind that I'm relatively new to this area, so forgive me if I'm not making much sense.