Flow and heat transfer characteristics of ice crystals in polar vessel pipelines under vibration conditions

Abstract

Due to the influence of the ship mechanical vibration on the pipeline flow in the Arctic channel, the Euler-Euler model, wall function model in computational fluid dynamics (CFD), and interphase mass transfer model loaded by CFD are used to perform numerical simulations on ice crystals in the horizontal pipeline. The effects of amplitude, frequency, inlet ice content, and velocity on the flow and heat transfer characteristics of ice crystals are studied. The results show that the increase in the pressure drop follows a quadratic trend when the velocity changes under vibration conditions. The frequency and amplitude of vibration strengthen the disturbances in pipelines and promote the increase of temperature and mass transfer rate. The increase of vibration and vibration frequency can reduce the concentration of ice particles with the largest volume, which tend to gather on both sides at 40 and 50 Hz.