摘要
从非稳态线性离心机流场运动方程出发,利用有限体积法,采用交错网格得到离散方程。通过数值求解得到了存在温度驱动情况下,离心机内形成小扰动流场的过程。从形成小扰动流场的非稳态过程可以看出扰动流场在开始和稳定阶段的影响因素不同,从温度引起的轴向压强的不平衡引起流动逐渐过渡到压强分布不同而引起的轴向环流。数值模拟为更好地研究离心机内流场的非稳态过程提供了依据。
Unsteady flow equations for the centrifuge are solved on a staggered grid by a finite volume method. The transient process that the axial flow in the centrifuge is established under a steady thermal driving. It can be concluded that the influence which causes the perturbing fluid is different at the beginning and the end of the processing. The flow is caused hy the imbalance of temperature which turns to be caused by the imbalance of pressure. The results show that the numerical simulation is effective at the unsteady fluid in a centrifuge.
出处
《同位素》
CAS
北大核心
2006年第1期7-11,共5页
Journal of Isotopes
关键词
同位素分离
离心机流场
非稳态方程
isotope separation
flow field in a centrifuge
unsteady equation