Gas-liquid downward flow is frequently encountered in hilly terrain pipelines, downcomer pipes extending from offshore production platforms to sea floors, and steam injection wells in thermal enhanced recovery operations. Since the gravitational and frictional terms in the total pressure gradient equation for downward flow have opposite signs, gas-liquid downward flow in inclined and vertical pipes may experience either pressure loss or pressure gain depending on flow rates, pipe geometry and fluid properties. A mechanistic model for the pressure loss/gain boundary of gas-liquid downward flow in inclined and vertical pipes is developed in this work. The effects of pipe inclination angle, inside diameter, wall roughness, and fluid physical properties on the pressure loss/gain boundary are presented.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Pressure loss/gain boundary of gas-liquid downward flow in inclined and vertical pipes


    Contributors:
    Chen, X.T. (author) / Zhang, H. (author) / Brill, J.P. (author)


    Publication date :

    1999


    Size :

    Seiten


    Type of media :

    Conference paper


    Type of material :

    Storage medium


    Language :

    English





    Automobile downward pressure adjusting device

    WANG TIEMIAO / WANG NAN / WANG TIEXIA et al. | European Patent Office | 2015

    Free access


    Downward pressure self-adaptive adjusting device, downward pressure self-adaptive adjusting method and automobile

    GUO ZHIWEI / ZHANG CHAO / SUN LIZHI et al. | European Patent Office | 2021

    Free access

    Investigation of three-phase gas-crude oil-water flow in inclined pipes

    Elseth, G. / Hanssen, R. / Kvandal, H. et al. | Tema Archive | 2005