Effective numerical methods for calculating non-stationary heat and glaciation dynamic processes for offshore gas pipelines

Galina I. Kurbatova and Vladimir A. Klemeshev

Energy, 2020, vol. 205, issue C

Abstract: For offshore gas pipelines in the northern seas the computation of the total heat flux from ambient in every cross section of the pipeline involves solutions of various non-stationary heat problems, in particular, the one- and multidimensional single- and two-phase Stefan problems. In this paper, we have developed a novel numerical method with increased accuracy in solving one-dimensional single- and two-phase Stefan problems. Results of a comparative analysis of the various numerical techniques with respect to its effectiveness in solving to two-dimensional heat conduction problems in the absence of axial symmetry is presented. The calculation by chosen effective numerical method of the total heat flux into a gas pipeline buried in soil under different conditions presented.

Keywords: Offshore gas pipelines; Stefan problem; Frontal interval method; Heat exchange model; Numerical method with increased accuracy (search for similar items in EconPapers)
Date: 2020
References: View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:205:y:2020:i:c:s0360544220311026

DOI: 10.1016/j.energy.2020.117995

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