PhD - Laurent De Moerloose - Computational Analysis of Two-Phase Flow-Induced Vibration in Heat Exchanger and Piping Geometries

When
25-09-2020 from 17:00 to 19:00
Language
Dutch
Contact
Laurent.DeMoerloose@UGent.be
Website
https://www.ugent.be/nl/agenda/doctoraten/20200925-TW08
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PhD - Laurent De Moerloose - Computational Analysis of Two-Phase Flow-Induced Vibration in Heat Exchanger and Piping Geometries

Heat exchangers and piping are commonly used in industrial applications such as power plants, oil and gas transport or process industry. When the pipes in these
applications are subjected to a moving mixture of liquid and gas, so-called two-phase flow, they are prone to transient forces and hence vibrations which can lead to short- or long-term failure of the system. In the past decades, numerous studies have been presented trying to predict these vibrations, but it is only more recently that sufficiently accurate numerical calculations can be used to model the two-phase flow inside or around the tubes. In the current research, a number of different case studies are presented in which two-phase flow-induced forces and displacements are calculated. We can see that the underlying excitation mechanism differs from case to case, but a general method is presented which is able to predict and quantify the occurring phenomena in all cases. Furthermore, a new model of stochastic nature is presented which allows to generate a bubbly flow at the inlet of any geometry, at a fraction of the cost of classical approaches. The potential of
this new model is clearly proven in two different cases.
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