A.G. Gumerov, Doctor of Technical Sciences (Institute of Ehergy Resources Transportation GUP), R.G. Shagiev, Candidate of Technical Sciences

(Center of Pipeline Transport Hydraulics of Republic Bashkortostan

Academy of Sciences), N.Kh. Khallyyev, Doctor of Technical Sciences

(Russian State University of Oil and Gas named for I.M. Gubkin)

 

OUTFLOW FROM RUPTURED INCLINED SEGMENTS   

OF LIQUEFIED HYDROCARBON GAS PIPELINES

 

Background

The main factor for integrity enhancement of the liquefied hydrocarbon gas pipelines is determination of outflow intensity from ruptured pipelines.

Aims and Objectives

Simulation of outflow of liquefied hydrocarbon gas from inclined pipelines.

Methods

Methods used are based on simulation of hydrodynamics equations of multiphase flow in quasistationary homogeneous equilibrium approximation.

Results

It follows from the calculated data, that in the initial moments of time outflow from the full bore pipeline rupture in the horizontal section of the pipeline is more intense than in the full bore pipeline rupture at the bottom of the inclined one. The outflow from the top of inclined section takes an intermediate position.

Conclusion

There is developed a method of calculation of outflow from the orifice of ruptured sections of liquefied hydrocarbon gas pipelines.

 

Key words: inclined pipeline, liquefied natural gas, full bore rupture, outflow intensity, cumulative mass outflow.

 

Literature

1. Nigmatulin R.I. Dinamika mnogofaznykh sred (Multi-Phase Media Dynamics). Moscow: Nauka, 1987. Ch. 1: 464 p.;  Ch. 2: 360 p.

2. Gubaydullin  D.A.,  Ivandaev  A.I.  Nestatsionarnoye  istecheniye szhizhennykh uglevodorodov pri razryve truboprovodov // Teplofizika vysokikh temperatur (Unsteady Outflow of Liquefied Hydrocarbons Following Pipeline Breaking // Thermal Physics of High Temperatures). 1986. T. 24. No. 3. P. 295-300.

3. Shagiev R.G. Istecheniye nestabilynykh zhidkostey pri obryve truboprovoda  // Problemy sbora, podgotovki i transporta nefti i nefteproduktov. Sb. nauchn. tr. (Unstable Liquid Outflow Following Pipeline Breaking // Problems of Gathering, Treatment and Transportation of Oil and Oil Products. Sym. Scient. Works) / IPTER. Ufa, 1995. P. 90-93.

4. Nigmatulin R.I., Shagapov V.Sh., Galeeva G.Ya., Shagiev R.G. O vzryvnom istechenii vskipayushchey zhidkosti iz kanalov // Doklady RAN (About Explosive Outflow of the Boiling-up Liquid from the Channels // RAS Papers). 1998. T. 359. No. 4. P. 481-485.

5. Shagapov V.Sh., Galeeva G.Ya., Shagiev R.G. Ob istechenii vskipayushchey zhidkosti iz trubchatykh kanalov // Teplofizika vysokikh temperature (About Boiling-up Liquid Outflow from the Tubular Channels // Thermal Physics of High Temperatures). 1998.
T. 36. No. 1. P. 106-112.

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9. Taylor G.I. The Dispersion of Matter in Turbulent Flow Through a Pipe // Proceedings of the Royal Society, Series A. 1954. Vol. 223. No. 1155. R. 446-468.

10. Babenko Yu.V. Teplomassoobmen: Metod rascheta teplovykh i diffuzionnykh potokov (Heat and Mass Exchange: Method of Heat/Diffusion Flow Calculation). Leningrad: Khimiya, 1986. 144 p.

11. Webber D.M., Fannelop T.K., Witlox H.W.M. Source Terms for Two-Phase Flow in Long Pipelines Following an Accidental Breach // International Conference and Workshop on Modeling the Consequences of Accidental Releases of Hazardous Materials, September 28 – October 1. San Francisco, California. 1999. P. 145-168.

 

The authors

• Gumerov Asgat G., Doctor of Technical Sciences, Professor

Institute of Energy Resources Transportation GUP

General Director

Russian Federation, 450055, Ufa, pr. Oktyabrya, 144/3

tel: (347) 284-37-58

e-mail: ipter@anrb.ru

 

• Shagiev Rustam G., Candidate of Technical Sciences

Center of Pipeline Transport Hydraulics

of Republic Bashkortostan Academy of Sciences

Leading Researcher

Russian Federation, 450055, Ufa, pr. Oktyabrya, 144/3

̣el: (347) 284-36-95

e-mail: rggchag@mail.ru

• Khallyyev Nazar Kh., Doctor of Technical Sciences, Professor

Russian State University

of Oil and Gas named for I.M. Gubkin

Deputy Head of Affiliate of Chair in Orgenergogaz OAO

Russian Federation, 115304, Moscow, ul. Luganskaya, 11

̣el: (499) 580-07-98

e-mail: Khallyev@oeg.gazprom.ru