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PIPE FLOW MEASUREMENTS

?????????????????? ??????????????????????????. ????????????????????????????????????????????? (Differential Head Meters)?????????????????????????????????????????????????????????????????????????????????????????????? (Mechanical Meters)????????????????????????????????????????????????????????????????

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PIPE FLOW MEASUREMENTS

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    3. ?????????????????????????????????????????????? 1 ???2 ????????

    6. ??????????????????????????? ?????????????????????????????????? ???????????????????(1) ?????(2)

    7. ??? Q = ??????????????????? c = ??????????????????????? (discharge coefficient) A1 = ?????????????????????????????????????? ??????????????? ?????? A2 = ????????????????????????????????????????,??????????????? ?????????????????????????????????(Vena Contracta) A0 = ??????????????????????????????

    11. ??????????(W.M. Lansford) ????????????????????????????????????? ?????? ??? c = ??????????????????????????? A = ???????????????????????? P0 = ?????????????????? Pi = ?????????????????

    12. ??????????? (90-Flanged Elbow) ??? c ?????????????

    25. ??? QA ??? ?????????????????????????????????????? Qc ??? ?????????????????????????????????????????? ?a ??? ??????????????????????????????????????????? ?c ??? ?????????????????????????????????????????????????????

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