Numerical simulation of the flicking characteristics of flexible pressure pipes
Article
Figures
Metrics
Preview PDF
Reference
Related
Cited by
Materials
Abstract:
As an important fluid transportation equipment, flexible pressure pipeline is widely used in temporary or mobile engineering due to its applicability. However, as its pressure level and flow rate continue to increase, the vibration of the pipeline becomes more and more prominent, and slamming accidents often occur. In this paper, the ANSYS Workbench platform was used to numerically simulate the flicking behavior of flexible pressure pipeline tripping. Based on this, the effects of pipeline flow rate, fluid physical parameters, pipe bending length and bending radius, and restraint position on the flicking motion were studied. The results show that the slamming motion of the pipeline has strong nonlinear characteristics, the deformation displacement and slamming speed at the tripping end are the largest, and the equivalent stress at the fixed end is the largest. With the increase of the flow velocity, the deformation displacement, the slamming speed and the equivalent stress of the pipe slamming increase, and the strain energy changes at a high power. With the increase of fluid density, the main parameters of the pipeline slamming movement increase linearly and the viscosity of the fluid increases, resulting in more intense slamming of the pipeline. The longer the pipeline length, the longer the motion cycle. With the increase of the bending radius, the main parameters of the pipeline slamming movement are reduced. The constrained position of the pipeline safety buckle mainly affects the length of the pipeline and the bending radius, thus affecting the slamming movement. The shock vibration of pipeline is dominated by the second order mode.
