SIMULATION OF CRITICAL NOZZLE FLOW CONSIDERING REAL GAS EFFECTS

P. Schley, E. von Lavante, D. Zeitz, M. Jaeschke, H. Dietrich, B. Nath

Abstract

Critical nozzle flow is predicted for high pressure natural gas by way of numerical simulation. The CFD-program used was developed for simulating two- dimensional and axially symmetric, viscous flow. The thermodynamic properties significantly affecting nozzle flow of high pressure natural gas were computed using the AGA8-DC92 equation of state. To verify the present theoretical results, mass flow measurements of natural gas were made using the Pigsar high-pressure test rig. A comparison between theoretical and experimental results is presented for one test case.

Keywords

critical flow factor, critical nozzle, discharge coefficient, natural gas, numerical simulation, real gas

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IMEKO-TC9-2000-062.pdf

DOI

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IMEKO TC

TC9 - Flow Measurement

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