Investigation on two-phase flow-induced vibrations of a piping structure with an elbow

Abstract The dynamic behaviors of a horizontal piping structure with an elbow due to the two-phase flow excitation are experimentally investigated. effects patterns and superficial velocities on pressure pulsations vibration responses evaluated in detail. A strong partition coupling algorithm is used calculate flow-induced (FIV) pipe, theoretical values agree well experimental results. It found that lateral axial bend pipe related momentum flux flow, amplitudes increase liquid mass flux. vertical strongly affected by pattern, maximum response occurs transition region from slug bubbly flow. Moreover, standard deviation (STD) three directions gas for both flows. blockage slugs at section strengthen amplitude water-blocking phenomenon disappears as velocity increases.