机械科学与技术2017，Vol.36Issue(3)：329-334,6.DOI:10.13433/j.cnki.1003-8728.2017.0301
矿浆泵内转速对固液流体速度矢量分布的影响分析
Analysis on Influence of Rotational Speed on Solid-liquid Flow Velocity Vector Distribution in Slurry Pump
摘要
Abstract
With the application of Euler model,RNG κ-ε (Renormalization-group κ-ε) turbulence model and SIMPLEC algorithm,the numerical analysis of solid-liquid two phase flow of impeller and diffuser in slurry pump was carried on to investigate the internal characteristics of flow field and performance on the influence of rotational speed in slurry pump for deep-sea mining.The effects of absolute velocity distribution of impeller blades and guide vanes and performance of slurry pump were researched.The results show that:when the rotational speed increases,the boundary layer separates more easily in the impeller flow region,and the flow capacity weakens;At the outlet of impeller,the stronger the jet-wake structure is,the more serious hydraulic loss is;The more violent the impact of space guide vane inlet is,the more confused the flow of the region is,and there is a large scale two flow in the inlet of the guide vane pressure.However,with the increase of the rotational speed,the flow separation of the mixed fluid at the inlet of the guide vane suction surface is suppressed,which increases the flow capacity and reduces the hydraulic loss.关键词
深海采矿/矿浆泵/转速/固液两相流/数值模拟Key words
deep-sea mining/slurry pump/rotational speed/solid-liquid two phase flow/numerical simulation分类
机械制造引用本文复制引用
徐海良,周卓,杨放琼,陈奇..矿浆泵内转速对固液流体速度矢量分布的影响分析[J].机械科学与技术,2017,36(3):329-334,6.基金项目
国家自然科学基金项目(51375498)与教育部博士点基金项目(20130162110004)资助 （51375498）
