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eKonferencije.com: DETERMINATION OF PRESSURE DROP TWO-PHASE FLOW OIL AND GAS FOR ISOTHERMAL FLOW IN HORIZONTAL PIPELINE

DETERMINATION OF PRESSURE DROP TWO-PHASE FLOW OIL AND GAS FOR ISOTHERMAL FLOW IN HORIZONTAL PIPELINE

1. Cvetko Crnojevic, Albania
2. Milan Lečić, Univeristy of Belgrade, Faculty of Mechanical Engineering, Serbia

For determination pressure drop in the straight circular horizontal pipes through which the two-phase mixture flow of liquid and gas is commonly used well-known Lockhart-Martinelli method for incompressible flow involves mixture of both phases. Considering that the transport of oil, natural gas or two-phase mixture of oil and natural gas flow at high pressure to the existing model of Lockhart-Martinelli need to be corrected by taking into account the compressibility of gas. In this paper we analyze one-dimensional isothermal flow of two-phase mixture of oil and gas in the straight horizontal pipeline. On that occasion, two-phase flow mixture is decomposed into two single-phase flow and it is one incompressible flow of oil and other compressible gas flow. Both of these flows are treated as one-dimensional, isothermal, and for each of them determined by the change of pressure in the pipe, but it is used and equal pressure drop two-phase mixtures and individual single-phase flow pressure drop. As a result of this analysis, a new formula for pressure drop was obtained for flow in hydraulically smooth pipes. The new formula shows that the pressure drop two-phase mixture is a complex function of flow regime, density and viscosity of oil and gas, the mass concentration of components and the parameter X which appears in the method of Lockhart-Martinelli.

Тематска област: Термотехника и енергетика

Уводни рад: Да

Датум: 10.03.2011.

Бр. отварања: 801

11th International Conference on Accomplishments in Mechanical and Industrial Engineering

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