Open AccessPressure Drop dan Pola Aliran Dua Fase (Air-Udara) Melewati Pipa Groove Vertikal
Author(s) -
Supa Kusuma Aji,
Denny Widhiyanuriyawan,
Lilis Yuliati
Publication year - 2020
Publication title -
rekayasa mesin
Language(s) - English
Resource type - Journals
eISSN - 2477-6041
pISSN - 2338-1663
DOI - 10.21776/ub.jrm.2020.011.03.7
Subject(s) - pressure drop , inlet , groove (engineering) , materials science , mechanics , pressure sensor , hydrostatic test , pressure gradient , water flow , optics , composite material , geology , physics , geotechnical engineering , mechanical engineering , engineering , thermodynamics , metallurgy
This research was conducted to observe the effect of adding grooves in the two-phase flow of water-air in the same direction through a vertical pipe to changes in pressure and fluid flow patterns. Test section in the form of pipes with grooves made of acrylic material with a length of 100 cm and an internal diameter of 2.54 cm. The geometric shape of the acrylic pipe is modified by giving a groove in the direction of the pipe along the test section. Grooves used amounted to 4 and 16 and pipes without grooves used as a comparison. Tests are carried out by flowing water and air that has been mixed through the inlet side upward. The ratio of air velocity to water velocity (VG / VL ) is 0.24-1.13. The method used in this study is experimental. Retrieval of pressure drops data is done by using a differential pressure transmitter. Visual observations are also made using a DSLR camera equipped with a flash and video observations using a smartphone with slow-motion mode. The results showed changes in flow patterns and pressure drop values. Slugs in pipes with grooves disappear faster and pressure drops are lower than pipes without grooves.