Compressible Gas-Liquid Flow through Pipeline Restrictions

Abstract A method is presented for estimating the mass flow rate-pressure drop characteristics of compressible gas-liquid mixtures flowing through pipeline restrictions. The method can be applied for all two-phase Mach numbers Ma tp ⩽ 1. Predictions of the method are compared with a number of experimental data sets for air-water flows through nozzles and air-water and air-oil flows through orifice plates. The agreement is typically within ±8% for nozzles and within ±12% for orifice plates. Application of the method to flow through rupture discs and pressure relief valves is discussed.