Two-phase Turbulent Flow Research Of Suspended Spray Particle

Two phase spray suspended turbulence flow is ubiquitous in nature and modern fluid machinery, study its motion and its role in the turbulent flow field can help to better understand many phenomena in nature and engineering, and to improve the existing theoretical knowledge as well as mechanical equipment.Spray plays an important role in the upper boundary layer of ocean, have very important influence on moisture distribution,heat flux and momentum transfer,has a significant influence on the stability of fluid machinery and other equipment.The asymmetrical momentum distribution caused by spray impact the service life and the stability of equipment.This study combines sea, typhoon wave energy power generation and the climate changes in upper ocean environment. Turbulence Couette flow is simulated via Euler-Lagrange two-way coupling numerical simulation. The finite element solver of open source finite element simulation software OpenFoam is used in this research.The aim of this study is to determine how and under what conditions particle can alter the turbulent momentum transport. In general, it is found that particles can alter small scale turbulence levels, as search by wall-normal and spanwise velocity activity,particles tend to weaken near-wall vortical activity. Analysis of the variation of velocity fluctuation and stress distribution, it is found that the spray particle on the turbulent momentum transport has great influence. When the spray particle concentration lower this effect is not very obvious, but when the concentration reaches a certain level, this effect will be very significant. In addition to spray particle will affect the turbulent momentum transport, also influence of the distribution of heat flux, changing the heat distribution of the upper boundary layer.