摘要
由于滤芯折褶结构过于微小,再加上温度和环境等因素的存在,运用试验测试这种方法来研究折褶滤芯的过滤阻力有一定弊端。采用CFD技术对过滤器进行数值模拟,观察流体在过滤器内腔中的水流现象,分析其通过滤网时的流动状态,找到了二维数值模拟方法误差大的原因,并采集十个折褶滤芯的样本点,拟合出理论计算与数值模拟的相对误差曲线。结果表明,对于折褶滤芯而言,采用三维数值模拟方法得出来的过滤阻力误差不到5%,这对滤芯的设计和选型具有指导意义。
Because of the flexure structure of the filter element is too small, together with the influence of the factors such as temperature and environment, there are certain disadvantages to study the flexure filter filtration resistance using experimental tests. The numerical simulation of the filter was carried out by CFD technology in this paper, the fluid flow in the cavity was ob- served and the flow state of fluid through the filter screen was analyzed, the reason for the large error of the two-dimensional numerical simulation method was found. Ten sample points of flexure filter were collected, the relative error curves of the theo- retical calculation and numerical simulation were fitted. Results showed that for the flexure filter, the filtration resistance error obtained by three-dimensional numerical simulation method was less than 5%, which had guiding significance for design and type selection of filter element.
出处
《过滤与分离》
CAS
2017年第2期14-19,共6页
Journal of Filtration & Separation
关键词
折褶结构
过滤阻力
CFD技术
数值模拟
误差曲线
flexure structure
filtration resistance
CFD technology
numerical simulation
error curve
