... with overall a high amplitude whereas a larger diameter leads to an overall lower amplitude with excitation of only lower modes. Keywords: Flow-Induced-Pulsations, Vibrations 1. INTRODUCTION High amplitude pulsations can occur in pips systems due to an interaction between shear layers and the acoustic...

... Abstract Multiphase flow is a known source of vibrations in piping systems. Multiple experimental campaigns have focused on the force spectrum on horizontal bend systems. To evaluate the evolution of multiphase forces through a vertical loop, experiments have been done on an air-water, two inch...

... Abstract Piping vibrations in process plants are rarely analyzed or anticipated correctly during the ‘design Stage’. Most of the times ‘in -depth’ analysis is not carried out during ‘design stage’ except following few good engineering practices. As a result, few pipes can show excessive...

... of unacceptable fatigue stresses. Therefore, here a more detailed fatigue assessment method has been developed. It consists of in-situ vibration measurements at the tip of the thermowell and a numerical evaluation with a detailed FE model of the installed thermowell. With this approach the fatigue stress...