【摘要】 本文从水力学基本原理出发,分析、推导了阶梯式浇注系统各部位的局部阻力系数计算公式。在水力学模型上,利用高速摄影和压力传感器分别连续测定了各典型部位的流速和压力,进而运用这些数据计算了这些部位的局部阻力系数。更多还原

【Abstract】 Calculational formulae of various junctions.in the step-gate system were pr-esented by the hydrodnamical principle. BY water model experiment, the localresist ances ta Various junctions of the step-gate system were calculated from the values of flow rates and pressures measured by the high speed camera and pressure capsule respectively.更多还原