TY - CONF N2 - T-junctions are commonly used in distributing two-phase flow by piping networks especially in oil and gas industries. Understanding the behavior of two-phase flow through a T-junction is very important as it has significant effect on the operation, maintenance and efficiency of the components downstream from the junction. The objective of this paper is to determine the effect of ratio of side arm to main arm diameters, initial inlet gas saturation and gas density variation on passive separation performance in T-junction. Via computational fluid dynamics tool, preliminary investigation found that separation efficiency is proportional to diameter ratio in between 0.5-0.75. Beyond diameter ratio 0.75, there is a flattening of separation efficiency. The change of fraction of gas taken off is inversely proportional to initial inlet gas saturation and the trend is almost inversely linear for diameter ratio 0.5. Beyond that, the relationship between initial inlet gas saturation and separation efficiency exhibits mild non-linearity behavior. For diameter ratios 0.75-1.0, the fraction of gas taken off is almost similar as far as the initial gas saturation is concerned. Gas density affects phase separation efficiency when the initial gas saturation is low. Interestingly, the effects of the inlet flow velocity and gravity distribution is almost negligible relative to the mass split ratio, side to main arm diameter ratio, initial gas saturation and density differential. © 2015 AIP Publishing LLC. N1 - cited By 12; Conference of International Conference on Mathematics, Engineering and Industrial Applications, ICoMEIA 2014 ; Conference Date: 28 May 2014 Through 30 May 2014; Conference Code:113203 ID - scholars5941 TI - Numerical investigation of gas separation in T-junction AV - none A1 - Pao, W. A1 - Hashim, F.M. A1 - Ming, L.H. UR - https://www.scopus.com/inward/record.uri?eid=2-s2.0-85006201934&doi=10.1063%2f1.4915719&partnerID=40&md5=1eb87989b36869f9e3c63c5532cf4d33 VL - 1660 Y1 - 2015/// PB - American Institute of Physics Inc. SN - 0094243X ER -