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Numerical Modelling of Fluidelastic Instability in a Normal Triangle Tube Array

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dc.contributor.advisor Hassan, Marwan
dc.contributor.author El Bouzidi, Salim
dc.date.accessioned 2014-04-29T19:05:04Z
dc.date.available 2014-04-29T19:05:04Z
dc.date.copyright 2014-04
dc.date.created 2014-04-23
dc.date.issued 2014-04-29
dc.identifier.uri http://hdl.handle.net/10214/8028
dc.description.abstract Flow Induced Vibrations (FIV) are a significant threat to the life of major power plant components such as heat exchangers. The most dangerous of these excitation sources is fluidelastic instability (FEI). Early FEI models focused on predicting the stability threshold of heat exchanger tubes subjected to fluidelastic forces based on empirical data, but the inability of empirical predictions to account for the variability in tube array geometry, pitch, and single or two phase flow limited the usefulness of these models. This thesis investigates the properties of unsteady flow in a normal triangle tube array with a pitch-to-diameter ratio of 1.5. Stability simulations are conducted over a mass damping parameter range 9--200, using a reduced order model of the moving tube. This investigation provides a direct observation of the channel area. When implemented into the time domain model the new parameters provide better agreement with the experimental stability threshold data available. en_US
dc.language.iso en en_US
dc.subject vibrations en_US
dc.subject flow induced vibration en_US
dc.subject steam generators en_US
dc.subject fluidelastic instability en_US
dc.subject numerical modelling en_US
dc.subject time delay en_US
dc.subject flow cell model en_US
dc.title Numerical Modelling of Fluidelastic Instability in a Normal Triangle Tube Array en_US
dc.type Thesis en_US
dc.degree.programme Engineering en_US
dc.degree.name Master of Applied Science en_US
dc.degree.department School of Engineering en_US
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