Investigation of the effect of passive vortex inserts of different geometrical shapes on the vibrations reduction efficiency in pipelines with two-phase flowVladimir I. Velkin, Sergey E. Shcheklein, Hossain Ismail, A. Nikitin and G. ChikansevMATEC Web Conf., 115 (2017) 05012DOI: https://doi.org/10.1051/matecconf/201711505012