Mengmeng Zhang

TL;DR: In this paper, an experimental study of VIV for a flexible pipe fitted with helical strakes was conducted in an oscillatory flow with the Keulegan-Carpenter (KC) number varying from 21 to 165 and maximum reduced velocities ranging from 4 to 12.

TL;DR: In this article, a time domain prediction method from experimental data is proposed for vortex-induced vibration (VIV) of flexible risers, where the nonlinear factors, couplings among axial tension, VIV response in cross flow (CF) direction and the hydrodynamic force, have been taken into account in this method, with a simplified tension variation model and empirical hydrodynamynamic force model.

TL;DR: In this article, a finite element model estimating mechanics of unbonded flexible risers' bending is proposed, where couplings between bending moment and axial stress as well as contact interaction among layers and tendons have been considered.

TL;DR: In this paper, the authors investigated the drag force coefficients of a flexible riser undergoing vortex-induced vibration (VIV) in sheared flow for Reynolds numbers (Re) up to 1.2×105.

TL;DR: In this paper, an efficient time-domain prediction model is developed to predict unsteady flow vortex-induced vibrations (VIV) of flexible risers, based on the spatial and temporal variations of reduced velocity.