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渣浆泵内固相颗粒冲蚀特性的数值模拟
引用本文:吴波,严宏志,徐海良,谭援强.渣浆泵内固相颗粒冲蚀特性的数值模拟[J].中南大学学报(自然科学版),2012,43(1):124-129.
作者姓名:吴波  严宏志  徐海良  谭援强
作者单位:1. 中南大学机电工程学院,湖南长沙,410083
2. 湘潭大学复杂轨迹加工工艺及装备教育部工程研究中心,湖南湘潭,411105
基金项目:国家自然科学基金资助项目(50975290);湖南省自然科学基金资助项目(11JJ5028);中南大学中央高校基本科研业务费专项资金资助项目(2011QNZT057);湘潭大学复杂轨迹加工工艺及装备教育部工程研究中心资助项目(2010)
摘    要:应用雷诺涡粘模型(液相)、离散相流动模型(固相)和压力耦合流场计算法,对渣浆泵全流道内固液两相湍流场的固相颗粒的冲蚀行为进行数值模拟.研究泵转速、固相粒径和叶片参数对颗粒冲蚀特性的影响.研究结果表明:随着泵转速的提高或者粒径的增大,颗粒冲击叶片表面的位置逐步移向叶片的头部,颗粒的冲击速度和冲击角度随之增大;不同叶片参数的叶轮对固相颗粒的冲蚀行为影响明显;数值模拟的研究成果可应用于抗冲蚀磨损叶轮的设计.

关 键 词:渣浆泵  全流道  离散相模型  固相颗粒  冲蚀特性  数值模拟

Numerical simulation about erosion characteristics of solid particle in slurry pump
WU Bo , YAN Hong-zhi , XU Hai-liang , TAN Yuan-qiang.Numerical simulation about erosion characteristics of solid particle in slurry pump[J].Journal of Central South University:Science and Technology,2012,43(1):124-129.
Authors:WU Bo  YAN Hong-zhi  XU Hai-liang  TAN Yuan-qiang
Institution:1.School of Mechanical and Electrical Engineering,Central South University,Changsha 410083,China; 2.Engineering Research Center for Complex Track Processing Technology and Equipment,Ministry of Education,Xiangtan University,Xiangtan 411105,China)
Abstract:With the application of Reynolds eddy viscosity model,Discrete-phase flow model and the SIMPLE(Semi-implicit method for pressure-linked equations) algorithm,the numerical simulation about solid-liquid two-phase turbulence in the full passage field of centrifugal slurry pump was carried on.The effects of pump speed,solid-phase particle size and parameter of blade impact on characteristics of particle erosion were researched.The results show that with the increase of pump speed or particle size,particle impact on the location of the blade surface gradually move towards the start side of blade,and particle impact velocity and impact angle also increase.Impellers with different blade parameters significantly affect the erosion behavior of solid-phase particles.Numerical simulation results can be applied to anti-erosion wear impeller design optimization.
Keywords:slurry pump  full passage  discrete phase model  solid-phase particle  erosion characteristics  numerical simulation
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