Author(s):
1. Cvetko Crnojevic, Albania
2. Milan Lečić, Univeristy of Belgrade, Faculty of Mechanical Engineering, Serbia

Abstract:
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.

Thematic field:
Termotehnika i energetika

Opening paper:
Yes

Date of abstract submission:
10.03.2011.

Number of visits:
801

Conference:
11^th International Conference on Accomplishments in Mechanical and Industrial Engineering

Applied paper from author