AUTHORS: Mohammed A. Abdulwahid, Hasanain J. Kareem, Mujtaba A. Almudhaffar
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ABSTRACT: This paper is provided a numerical simulation of flow patterns (bubble, slug/ Taylor bubble, churn/ stratified wave flow, annular) of air-water two phase flow. ANSYS FLUENT program with VOF homogenous model through unsteady state turbulent flow employed to study the effect of holdup, void fraction and liquid film thickness on the pressure drop through the vertical and horizontal pipes with the 90º elbow. K-ɛ (Realizable) model has been used in order to solve the turbulent flow with bubble and slug flow patterns; whereas (RNG) model with churn and annular flow patterns by depending on the values of viscosity and density of the flow mixture.
KEYWORDS: flow patterns, VOF, two phase, holdup, void fraction, numerical analysis
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