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試驗測定了雷諾数Re在10~4至3×10~5范围內、水纵向流过直径为6.21毫米棒組成的棒束元件盒的摩阻系数、局部阻力系数和总压降,还測定了直径为5.83及9.81毫米的棒所組成的五种不同排列和节径比s/d的棒束摩阻系数;对棒和盒壁粗糙度的差別进行了計算修正。当棒間平均流速为2.5至4.5米/秒时,棒束元件盒的总压降为8.7至27.5米水柱。它的摩阻、网格阻力和出入口阻力約各占总压降的三分之一左右。对于两种加工較好棒数較少的棒束,摩阻系数試驗值与計算值相符,对其他四种加工較差棒数較多的棒束,試驗值分别比計算值高出17—20%。
The Reynolds number Re was measured in the range of 10 ~ 4 to 3 × 10 ~ 5. The friction coefficient, local drag coefficient and total pressure drop of the bundle element box with the diameter of 6.21 mm in the longitudinal direction of the water were measured. Diameter of 5.83 and 9.81 mm rods composed of five different arrangement and section diameter ratio s / d of the rod friction coefficient; the difference between the rod and the box wall roughness were calculated and corrected. When the average bar flow rate is 2.5 to 4.5 m / sec, the total pressure drop of the bundle element cell is 8.7 to 27.5 meters of water. Its friction resistance, mesh resistance and resistance around the entrance and exit of about one-third of the total pressure drop. For the two kinds of bundles, the friction coefficient of the two bundles with the smaller number of processing is in good agreement with the calculated value. For the other four bundles with the worse number of sticking, the test values are respectively 17-20% .