Lock-in in the vortex-induced vibrations of a long tensioned riser in internal fluid flow and external uniform and shear flows: A prediction based on models

•A model for VIV of a long tensioned riser in internal fluid flow and external uniform and shear flows is developed.•The parameters are calibrated.•The numerical simulations are performed.•The influences of the oncoming velocity, conveying velocity and tension on the lock-in frequency and distribution are discussed.