Numerical Simulation of Velocity Attenuation of Aerated Jet Flows
Mixture RaNG k-e double-equation turbulence model is applied to study the velocity characteristics of aerated jet flow.The velocities of aerated jet flow under different air concentration are calculated.The results show that improving air concentration of jet flow can accelerate velocity attenuation of jet flow along the axial way.The reason that aeration influenced velocity attenuation of jet flow in this article is that improving air concentration of jet flow can reduce the core length and then accelerate attenuation of axial velocity.The distribution of velocity at specially appointed section is nearly Gaussian distribution and was not influenced by air entrainment prominently.The calculated results of velocity attenuation are in good agreement with those obtained by semi-empirical relationship.It indicates that the numerical simulation can effectively be used to study aerated jet flows.
Velocity Numerical simulation Air concentration Jet flow
Wangru Wei Jun Deng
State Key Laboratory of Hydraulics and Mountain River Engineering,Sichuan University,Chengdu,610065,P.R.China
国际会议
上海
英文
2292-2298
2012-10-19（万方平台首次上网日期，不代表论文的发表时间）