摘要
利用ProE软件对血泵的不同结构进行三维建模,应用计算流体力学(Computational fluid dynamics,CFD)中非定常三维N-S方程,基于非结构网格的有限体积法以及k-ε湍流模型方法数值模拟血泵的全三维内流场。着重计算和分析旋转叶轮转速和锥度变化对血泵流场的影响。仿真试验表明,锥形螺旋轴流血泵转速和锥度都不应过大,否则将会使得流场变得紊乱。转速过大,泵的性能会降低;锥度不应过大,否则不能保证流场平稳。
ProE software is utilized to build the 3D model of the blood pump. Unsteady state 3D N-S equations, finite volume method based on non-structure grids and k-ε turbulent model of computational fluid dynamic （CFD） technology are used to simulate the full three dimensional flow field of the blood pump numerically. The work of simulation and analysis focuses on the effects of the variation of the rotation speed and the angle of the rotating impeller on the flow field of blood pump. The simulation results show that the rotation speed and the angle of the rotating impeller of the blood pump should not exceed certain value. Otherwise, the flow field will be too turbulent. If the rotating speed is too great, the characteristics of the pump will debase. The angle of the rotating impeller should be within certain value, otherwise the flow field can not keep steady.
出处
《机械工程学报》
EI
CAS
CSCD
北大核心
2007年第9期47-50,共4页
Journal of Mechanical Engineering
基金
国家自然科学基金(50575195)
河北省2006年度留学回国人员科技活动资助项目。
关键词
锥形螺旋叶轮
血泵
流场
计算流体力学
Conical spiral impeller Blood pump Flow field Computational fluid dynamics
