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单相流管道,侧向汇流局部压力降计算

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Selected 管道, 压降.
  • 管道
  • 压降
  • 管道
  • 压降
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 依据:SH/T 3035-2018
侧向汇流局部压力降计算
名称 单位 公式/来源 值
1 示意图
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14 输入
15  流体密度,ρ kg/m³ 1000
16  断面3-3内直径,di3 m 0.043
17  断面3-3流量,qv3 m³/h 26
18  断面1-1/2-2内直径,di2 m 0.08
19  断面2-2流量,qv2 m³/h 365
20 过程
21  断面3-3与断面2-2的面积比,a / a=(di3/di2)2 0.28890625
22  断面2-2处合流流速,u2 m/s / 20.17067855
23  侧流阻力因子,A / / 0.8221875
24  侧流与合流的流量比,Q / Q=qv3/qv2 0.071232877
25  直流阻力系数,K1-2 / 0.105336836
26  侧流阻力系数,K3-2 / 2.290621636
27 结果
28  断面1-1至断面2-2的直流局部压力降,ΔPff1-2 kPa 1 21.4284763
29  断面3-3至断面2-2的侧流局部压力降,ΔPff3-2 kPa 1 465.9768911
计算表
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