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A Completely Parallel Scheme for Simulation of Transients in Large Gas Transmission Networks

  • Rudolf Maier
  • Günther Schmidt
Part of the Applied Information Technology book series (AITE)

Abstract

A new method for digital simulation of transient pressure and flow in large gas transmission networks is presented. The method is also applicable to other processes with similar system’s properties. Our simulation method is based on a network-oriented partitioning of a large set of nonlinear equations, which has to be solved at every time step. By multiple utilization of certain (coupling)-equations a simple parallel block-iteration scheme can be formulated for the solution of the nonlinear equations. The block-iteration is based on the Newton/Raphson method combined with a linear block-iteration of the Jacobi type. All blocks of equations can be treated concurrently, while the amount of data exchange between the blocks remains comparatively low.

The new numerical scheme is ideally suited for efficient implementation on a parallel computing facility of MIMD-type. The assumptions that assure its applicability are discussed in detail. Rate of convergence and overall expense of computing power for the solution scheme are demonstrated by results from the simulation of a medium-sized gas transmission network.

Keywords

Iteration Step Parallel Method Newton Step Coupling Variable Parallel Computer System 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Plenum Press, New York 1986

Authors and Affiliations

  • Rudolf Maier
    • 1
  • Günther Schmidt
    • 1
  1. 1.Lehrstuhl und Laboratorium fur Steuerungs- und RegelungstechnikTechnische Universität MünchenMünchen 2Germany

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