«Equipment and technologies for oil and gas complex»

Software module for calculation of non-isothermal liquid flow in complex pipeline systems

UDC: 621.644.01
DOI: -

Authors:

¹ National University of Oil and Gas "Gubkin University", Moscow, Russia

Keywords: pipeline fluid flow calculation, pipe networks, nodal pressure method, non-isothermal flow

Annotation:

The authors of the article study a nodal pressure method – one of the techniques of complex pipeline networks calculation. The basic hydraulic laws that model the liquid flow in a pipeline are presented in the article. The classical method of nodal pressures is described as well as its modification is proposed, allowing to generalize the proposed algorithm for performing hydraulic calculations in cases of non-isothermal liquid flow. An example of calculation with a demonstration of the values obtained at each step of the algorithm is presented. The numerical convergence of the method with a demonstration of graphs of the iterations number dependence on the initial approximations is analyzed. Besides, the authors of the article propose a program code, written by them, that allows carrying out calculations of pipeline systems by the modified nodal pressure method.

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