The non-ideal gas equations and mathematical formulation developed in this work using the compressibility factor in the equation of state closely resemble the derivations used for the ideal gas mathematical formulation for a direct comparison of the differences between the ideal versus the non-ideal gas law. The local Mach number is defined for the non-ideal gas. The plenum total variables used in compressible flow are expressed in terms of the local Mach number for the polytrope and Rayleigh models. A power law relationship is derived between the thermodynamic variables that allow an analytical result for the mass flow under certain constraints.
Isentropic Compressible Flow for Non-Ideal Gas Models for a Venturi
Contributed by the Fluids Engineering Division for publication in the JOURNAL OF FLUIDS ENGINEERING. Manuscript received by the Fluids Engineering Division March 20, 2002; revised manuscript received September 15, 2003. Associate Editor: A. K. Prasad.
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Cornelius, K. C., and Srinivas, K. (May 3, 2004). "Isentropic Compressible Flow for Non-Ideal Gas Models for a Venturi ." ASME. J. Fluids Eng. March 2004; 126(2): 238–244. https://doi.org/10.1115/1.1677499
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