Fluid property modelingĪn accurate description of fluid behavior is critical to correctly model the production system. The PIPESIM simulator can also model internal natural convection using a proprietary methodology shared with OLGA.
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Heat transfer models supported by the PIPESIM simulator include a flow regime dependent model for inside film coefficient, plus an analytical model for convection in buried and partially buried pipes-shown to closely match more complex finite-element methods.
The PIPESIM simulator performs comprehensive energy balance calculations that account for a variety of heat transfer mechanisms, including the following: Heat transferĪccurate prediction of heat transfer is critical for calculating temperature-dependent fluid properties, prediction of solids formation and the overall thermal design of your system.
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The PIPESIM simulator includes code templates that can assist in compiling a user-generated 2- or 3-phase flow correlation via a plug-in DLL. High-resolution flow regime maps can also be produced for any point in the system. Additionally, the comparison operation can quickly sensitize to flow correlations and help selecting the most appropriate model. The PIPESIM simulator includes a calibration feature for flow correlation, which can automatically adjust the holdup factor, friction factor, and U-value multiplier to match measured pressures and temperatures. Additionally, the PIPESIM simulator predicts the risk of severe slugging in risers. The design of pipelines and processing facilities can be optimized by predicting hydrodynamic slugs, including size and frequency, as a function of length traversed. The PIPESIM simulator produces detailed flow regime maps at points of interest. These allow calculation of flow regimes, liquid holdup, slug characteristics, and pressure loss for all nodes along production paths of all deviations-vital information for designing and operating production gathering and distribution systems. The PIPESIM simulator incorporates a wide variety of industry-standard multiphase flow correlations, as well as advanced 3-phase mechanistic models, including OLGAS, Kongsberg LedaFlow Point Model, and the TUFFP unified model.
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