摘要
用有限元法求解二维搅拌流动的Navier-Stokes方程。采用极坐标系,引用罚函数法处理流体不可压缩条件,并消去压力项,成功地计算了锚式桨搅拌槽二维流场的速度分布、流型以及剪切率分布。计算的流型与实验拍摄的结果符合良好,还对不同Re数下的搅拌流场进行了数值模拟,并描述了典型Re数下的计算结果及Re数对流场的影响。
The Navier-Stokes equations for two-dimensional agitated flow in the polar coordinates are solved with the finite element method. The penalty function and integration reduction techniques were used in the finite element formulation to treat the incompressibility constraint of fluids and eliminate the pressure term in the momentum equation. The velocity distribution, flow patterns and shear - rate distributions were successfully calculated for the 2-D agitated flow field induced by an anchor impeller. The good agreement of the calculated flow patterns with those obtained experimentally indicated the reasonableness of the present treatment. Numerical simulation was further carried on for various values of Reynolds number, and the influence of Reynolds number on the agitated flow fields was discribed.
出处
《化工学报》
EI
CAS
CSCD
北大核心
1994年第1期10-16,共7页
CIESC Journal
基金
国家自然科学基金
化学工程联合实验室聚合反应工程实验室开放基金
关键词
锚式桨叶
搅拌器
搅拌流场
流体
agitated flow, anchor impeller, finite element method, penalty function, flow pattern
