Research on Inhibition Effect of Vortex-Induced Vibration of Submarine Pipeline with Horizontal Spoilers

This study discusses hydrodynamic effects of horizontal spoilers fixed on submarine pipelines. Numerical cal- culations are conducted to investigate the influences of the spoiler on flow profile, vortex shedding frequency, drag coef- ficients and lift coefficients. The calculation results demonstrate that attached horizontal spoilers could change the wake flow and enhance the self-burial of the pipeline. Moreover, the vortex-inhibition effects of different sizes of spoiler are discussed. The length of horizontal spoilers between 1.0D~1.5D has the optimal effect. The results would be promising for the application to submarine pipelines.