为了计算和调节磁流变液孔口流量，对流场的区域进行剖分和分析，建立了磁流变液孔口出流数学模型.通过数值模拟的方法,对局部阻力系数进行了修正.通过孔口出流实验，验证了数学模型的精确性，并研究了孔口流量的影响因素.结果表明：该数学模型能够较为精准地计算孔口流量，并且在一定条件下通过改变磁流变液黏度、孔长、孔径和外加压强能有效地调节孔口流量.
In order to calculate and adjust the discharge of orifice for magnetorheological fluid, a mathematical model was established through the domain decomposition and analysis of flow field. The local resistance coefficient was revised by numerical simulation. Then, the mathematical model was verified and the influencing factor of discharge was analyzed by the experiment. The results indicate that the discharge of orifice can be calculated accurately by this mathematical model and adjusted effectively by the viscosity of magnetorheological fluid, the length of orifice, the aperture of orifice and the external pressure under certain conditions.
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