Commenced in January 2007
Paper Count: 30011
Numerical Analysis on Rapid Decompression in Conventional Dry Gases using One- Dimensional Mathematical Modeling
Authors: Evgeniy Burlutskiy
Abstract:The paper presents a one-dimensional transient mathematical model of compressible thermal multi-component gas mixture flows in pipes. The set of the mass, momentum and enthalpy conservation equations for gas phase is solved. Thermo-physical properties of multi-component gas mixture are calculated by solving the Equation of State (EOS) model. The Soave-Redlich-Kwong (SRK-EOS) model is chosen. Gas mixture viscosity is calculated on the basis of the Lee-Gonzales-Eakin (LGE) correlation. Numerical analysis on rapid decompression in conventional dry gases is performed by using the proposed mathematical model. The model is validated on measured values of the decompression wave speed in dry natural gas mixtures. All predictions show excellent agreement with the experimental data at high and low pressure. The presented model predicts the decompression in dry natural gas mixtures much better than GASDECOM and OLGA codes, which are the most frequently-used codes in oil and gas pipeline transport service.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1331385Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF
 R.J. Eiber, T.A. Bubenik, W.A. Maxey, "GADECOM, Computer code for the calculation of gas decompression speed. Fracture control for natural gas pipelines," PRCI Report, N L51691, 1993.
 R.J. Eiber, L. Carlson, B. Leis, "Fracture control requirements for gas transmission pipelines," Proceedings of the Fourth International Conference on Pipeline Technology, p. 437, 2004.
 K.K. Botros, W. Studzinski, J. Geerligs, A. Glover, "Measurement of decompression wave speed in rich gas mixtures using a decompression tube," American Gas Association Proceedings -(AGA-2003), 2003.
 K.K. Botros, W. Studzinski, J. Geerligs, A. Glover, "Determination of decompression wave speed in rich gas mixtures," The Canadian Journal of Chemical Engineering, vol. 82, pp. 880-891, 2004.
 K.K. Botros, J. Geerligs, J. Zhou, A. Glover, "Measurements of flow parameters and decompression wave speed follow rapture of rich gas pipelines, and comparison with GASDECOM," International Journal of Pressure Vessels and Piping, vol. 84, pp. 358-367, 2007.
 K.K. Botros, J. Geerligs, R.J. Eiber, "Measurement of decompression wave speed in rich gas mixtures at high pressures (370 bars) using a specialized rupture tube," Journal of Pressure Vessel Technology, vol. 132, 051303-15, 2010.
 K.K. Botros, J. Geerligs, B. Rothwell, L. Carlson, L. Fletcher, P. Venton, "Transferability of decompression wave speed measured by a small-diameter shock tube to full size pipelines and implications for determining required fracture propagation resistance," International Journal of Pressure Vessels and Piping, vol. 87, pp. 681-695, 2010.
 K.H. Bendiksen, D. Maines, R. Moe, S. Nuland, "The dynamic two-fluid model OLGA: theory and application," SPE Production Engineering, vol 6, N 2, pp.171-180, 1991.
 G.B. Wallis, "One-dimensional two-phase flows," McGraw Hill, New York, 1969.
 P.R.H. Blasius, "Das Aehnlichkeitsgesetz bei Reibungsvorgangen in Fluessigkeiten," Forschungsheft, vol. 131, pp. 1-41, 1913.
 G. Soave, "Equilibrium constants from a modified Redlich-Kwong equation of state," Chemical Engineering Science, vol. 27, pp. 1197- 1203, 1979.
 A.L. Lee, M.N. Gonzales, B.E. Eakin, "The viscosity of natural gases," Journal of Petroleum Technology, pp. 997-1000, 2010.
 S. Patankar, "Numerical heat transfer and fluid flow," Hemisphere Publishing, New York, 1980.
 E. Burlutskiy, "Mathematical modelling of non-isothermal multicomponent fluid flow in pipes applying to rapid gas decompression in rich and base natural gases," Proceedings of the Int. Conference on Fluid Mechanics, Heat Transfer and Thermodynamics -ICFMHTT-2012 (15-17 Jan 2012), Zurich, Switzerland, 61, pp. 156-161, 2012.