Evaluation of Mass Fluxes and Phase Parameters to Identify the Adiabatic two Phase Flow Patterns in Vertical And Horizontal Tubes

Two phase flows arise commonly in a variety of physical, engineering and industrial applications such as filtration, lubrication, spray process, natural gas networks and nuclear reactor cooling etc. The hydrodynamic behaviour of the two phase flows such as pressure drop, void fraction or velocity distribution varies in a systematic way with the observed flow patterns just as in case of a single phase flow, whose behaviour depends upon whether the flow is in the laminar or turbulent regime. Understanding the non linear complex dynamics underlying gas ? liquid flows is a significant but challenging problem. The primary task is to characterize and quantify the various flow patterns that often appear complex. The identification of a flow regime automatically provides a picture of the phase boundaries. The location of phase boundaries in turn allows one to make various order of magnitude calculations using integrated forms of the momentum and continuity equations. Such calculations suggest what variables might be worth while investigating and what kind of behaviour is to be expected. Present study focuses on evaluation of mass fluxes and phase parameters to identify the respective flow regime in two phase flows.