Abstract
The use of computational fluid dynamics (CFD) tools for modelling and analysing process systems has increased in recent years. A campaign has begun to investigate whether it is possible to simulate metering stations that include flow conditioners (FCs) and orifice meters. However, more information and validation are required in several areas before the technique can be fully exploited. This study was initiated prior to the start of full pipe simulation to investigate various grid effects, coordinate arrangements, wall boundary conditions, differencing schemes and turbulence models that can predict more accurate flow values through an orifice. The calculations were carried out in two-dimensional axisymmetric flow. The findings can be used in modelling both FCs and orifice plates.
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