THERMAL SCIENCE

International Scientific Journal

NUMERICAL SIMULATION OF WALL TEMPERATURE ON GAS PIPELINE DUE TO RADIATION OF NATURAL GAS DURING COMBUSTION

ABSTRACT
This paper presents one of the possible hazardous situations during transportation of gas through the international pipeline. It describes the case when at high-pressure gas pipeline, due to mechanical or chemical effect, cracks and a gas leakage appears and the gas is somehow triggered to burn. As a consequence of heat impingement on the pipe surface, change of material properties (decreasing of strength) at high temperatures will occur. In order to avoid greater rapture a reasonable pressure relief rate needs to be applied. Standards in this particular domain of depressurizing procedure are not so exact (DIN EN ISO 23251; API 521). This paper was a part of the project to make initial contribution in defining the appropriate procedure of gas operator behaving during the rare gas leakage and burning situations on pipeline network. The main part of the work consists of two calculations. The first is the numerical simulation of heat radiation of combustible gas, which affects the pipeline, done in the FLUENT software. The second is the implementation of obtained results as a boundary condition in an additional calculation of time resolved wall temperature of the pipe under consideration this temperature depending on the incident flux as well as a number of other heat flow rates, using the Matlab. Simulations were done with the help of the “E.ON Ruhrgas AG” in Essen.
KEYWORDS
PAPER SUBMITTED: 2012-05-03
PAPER REVISED: 2012-07-25
PAPER ACCEPTED: 2012-08-08
DOI REFERENCE: https://doi.org/10.2298/TSCI120503192I
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2012, VOLUME 16, ISSUE Supplement 2, PAGES [S567 - S576]
REFERENCES
  1. API 521, Guide for Pressure-Relieving and Depressuring Systems, American Petroleum Institute, 1997.
  2. EN ISO 23251, Petroleum, petrochemical and natural gas industries-Pressure-relieving and depressuring systems, EUROPEAN COMMITTEE FOR STANDARDIZATION, 2007.
  3. Dr. rer. nat W. Keiser et al., Ermittlung und Berechnung von Störfallblaufszenarien nach Massgabe der 3. Störfallverwaltungsvorschrift Band 1, Technische Universität Berlin, 2006
  4. User's guide, FLUENT 6.3, 2006.
  5. Ouellette, P., Pressure Injection of Natural Gas for Diesel Engine Fueling, M.Sc. thesis, The University of British Columbia, Vancouver, Canada, 1992
  6. Birch, A.D. et al., The Structure and Concentration Decay of High Pressure Jets of Natural Gas. Combustion Science and Technology, 36 (1984), pp. 249-261
  7. Davenport J. N.: Thermal response of vessels and pipe work exposed to fire, Imperial College for The Steel Construction Institute-HMSO, 1992
  8. Patankar S. V.: Numerical Heat Transfer and Fluid Flow, Hemisphere P.C., 1980.
  9. Ilić, G., Radojković, N, Stojanović, I., Thermodynamics II - Basics of heat distribution (in Serbian), Vranje, Yugoslavia, 1996.

© 2019 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence