A Model for the flow of natural gas through a pipeline in two-dimensional cylindrical coordinates

Effiong, E.E., Orga, A.C., Ibe, E.C., Ekeke I. C. and Nzebuka, C. G.

A model for predicting flow properties in a natural gas pipeline is presented in this paper. The method involves a two-dimensional gas pipeline model in axisymmetric cylindrical coordinates. The flow is assumed compressible and steady. Steady compressible natural gas flow through a pipeline was studied by the use of a finite volume method. First, the standard k-ε turbulence equations were modeled together with the Navier Stokes System of equations via the Reynolds-Averaged method. The Soave-Redlich-Kwong equation of state was also included as an auxiliary equation. Finally the Pressure Implicit with Splitting of Operators (PISO) applied on a staggered grid was used as method of solution. Computer simulation was then carried out to determine pressure, density, velocity, temperature, eddy viscosity, turbulence eddy dissipation and turbulence kinetic energy variation within the pipeline system. Parametric analysis was also carried out.

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