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Upstream pressure P1
Permanent pressure loss across orifice ΔPpermanent
Fluid density ρ
Fluid viscosity μ
Ratio of specific heats k
Flow rate Q
Pipe internal diameter dpipe
Orifice velocity head loss coefficient Kpermanent 15.048
Beta ratio β
Reynolds number Re 805064
Flow coefficient C 0.641
Pressure difference across orifice ΔPorifice 2.983
Orifice flow area Aorifice 0.00017
Pressure ratio r 0.40
Net expansion factor Y 0.79
Calculated orifice diameter dorifice 14.8

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