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Simulation of Gas Mixture Dynamics in a Pipeline Network using Explicit Staggered-Grid Discretization by Brodskyi, Yan; Gyrya, Vitaliy; Zlotnik, Anatoly is a scholarly article available to read on EtoBox.

What is Simulation of Gas Mixture Dynamics in a Pipeline Network using Explicit Staggered-Grid Discretization about?

We develop an explicit second order staggered finite difference discretization scheme for simulating the transport of highly heterogeneous gas mixtures through pipeline networks. This study is motivated by the proposed blending of hydrogen into natural gas pipelines to reduce end use carbon emissions while using existing pipeline systems throughout their planned lifetimes. Our computational method accommodates an arbitrary number of constituent gases with very different physical properties that may be injected into a network with significant spatiotemporal variation. In this setting, the gas flow physics are highly location- and time- dependent, so that local composition and nodal mixing must be accounted for. The resulting conservation laws are formulated in terms of pressure, partial densities and flows, and volumetric and mass fractions of the constituents. We include non-ideal equations of state that employ linear approximations of gas compressibility factors, so that the pressure dynamics propagate locally according to a variable wave speed that depends on mixture composition and density. We derive compatibility relationships for network edge domain boundary values that are si

Author

Brodskyi, Yan; Gyrya, Vitaliy; Zlotnik, Anatoly

Published

2024

Language

EN