A mathematical model of fluid flow in a two-stage reciprocating hybrid volumetric power machine with a second compression stage profiled from two truncated cones (a diffuser and a confuser) is developed. The model uses the energy conservation equation in the form of the Bernoulli equation, written both with and without compressibility of the fluid. Head losses were determined, including head losses along the length, head losses on local resistance, and inertial head losses. The developed mathematical model can be used to calculate not only a PDRHPM, but also the booster stages of medium-and high-pressure compressors that use a liquid piston.
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Translated from Khimicheskoe i Neftegazovoe Mashinostroenie, Vol. 56, No. 10, pp. 19–23, October, 2020.
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Shcherba, V.E., Zanin, A.V. & Nosov, E.Y. Mathematical Modeling of Fluid Flow in a Positive Displacement Two-Stage Hybrid Power Reciprocating Machine with a Profiled Second Compression Stage. Chem Petrol Eng 56, 809–821 (2021). https://doi.org/10.1007/s10556-021-00846-8
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DOI: https://doi.org/10.1007/s10556-021-00846-8