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Fluid Property Calculator. International Units English Units. This complimentary calculator is provided for all to use but it receives minimal support. We recommend that you DO NOT use it: As a resource called by other software for property data. In any critical application.
By taking into account units of measurement, the proportionality relationship previously mentioned, energy losses due to friction and turbulence, and varying discharge coeficients for various types of orifices (or valve bodies), a basic liquid sizing equation can be written as follows. Q = C.
To use this online calculator for Critical Pressure, enter Specific Heat Ratio (γ) & Stagnation Pressure (P0) and hit the calculate button. Here is how the Critical Pressure calculation can be explained with given input values -> 2.7E-5 = (2/ (1.4+1))^ (1.4/ (1.4-1))*490332.5.
4 lis 2012 · The flow coefficient can be calculated as: C v = C v_ saturated (0.95) 1/2 = 0.97 C v_saturated. Flow Coefficient - C v - Air and other Gases. Note! - there is a difference between critical and non critical pressure drops. Critical pressure drop is approximately 47% of inlet p i absolute pressure.
For critical flow, the following formula can be used to calculate the volumetric flow through a valve of coefficient Cv : Qv=F L *Cv/1.156.√(ΔP s /d) Q v =Flow rate (m3/h) F L = critical flow factor
Cv Value Calculator for Fluids. The Cv value for fluids can be found using the following formula: Where: Cv = Valve flow coefficient. Q = Volumetric flow rate (Gallons per minute, GPM) P1 = Inlet Pressure (psia) P2 = Outlet Pressure (psia) SG = Specific Gravity of the fluid. Calculate the minimum Cv value of your valve below.
Based on M = 0.96, the critical pressure coefficient was found to be −0.0697. A pressure coefficient below this critical pressure coefficient constitutes the supercritical region or the region of supersonic flow on the surface of the wing.
