燕山大学学报Issue(6)：513-521,9.DOI:10.3969/j.issn.1007-791X.2013.06.007
环冷机磁流变液密封研究
Research on magnetorheological fluid seal of circular cooler
摘要
Abstract
A new magnetorheological fluid seal technique is developed to deal with the air leakage of circular cooler by considering the serious air leakage of circular cooler based on the adjustable rheological property and controllable yield stress of ma-gnetorheological fluid under external magnetic field. The magnetorheological fluid is regarded as Bingham fluid. Its mathematical functions of magnetic force and yield stress are established. Its flow and yield characteristics in nonmagnetic seal groove under magnetic field is studied using finite element method. The simulation results show that 1. the magnetorheological fluid with good sealing performance presents certain pressure resistance under magnetic field, which can equilibrate the internal-external pressure difference of circular cooler; 2. the yield stress of magnetorheological fluid at the boundaries of nonmagnetic separator decreases with the increasing of sealing gap. Meanwhile, the linear fit method is proposed to obtain the yield stress expressions according to which the pulling force values The experimental results also prove the accuracy of numerical results with finite element method, It implies that the air leakage of circular cooler can be solved effectively using the developed technique.关键词
环冷机/磁流变液密封/磁场力/屈服应力Key words
circular cooler/magnetorheological fluid seal/magnetic force/yield stress分类
矿业与冶金引用本文复制引用
周洪亮,白明华..环冷机磁流变液密封研究[J].燕山大学学报,2013,(6):513-521,9.基金项目
国家自然科学基金资助项目 （）
