Two-Phase Flow Characteristics on The Extensive Expansion Channel

Latif Ngudi Wibawanto (Program Studi Teknik Mesin Fakultas Teknik, Universitas Sebelas Maret)
Budi Santoso (Lecturer– Mechanical Engineering Department–Universitas Sebelas Maret)
Wibawa Endra Juwana (Lecturer– Mechanical Engineering Department–Universitas Sebelas Maret)

Mekanika: Majalah Ilmiah Mekanika
Vol 16, No 2 (2017): MEKANIKA: Majalah Ilmiah Mekanika

This research was conducted to find out the flow characteristic of two phases through channel with sudden expansion in the form of change of flow pattern and pressure recovery. The test was conducted with variation of superficial velocity of water 0.2-1.3 m / s and superficial air velocity of 0.2-1.9 m / s resulting in pattern of three flow patterns ie bubble, plug, and slug. The expansion channel resulted in some changes to the flow pattern that originally plugs in the upstream channel into bubble in the downstream channel and the slug becomes plug. Pressure recovery experimental results were compared with the homogeneous model flow equation and Wadle correlation, the two correlations had predictions with standard deviation values of 0.32 and 0.43.