Open AccessFenomena Hydraulic Jump Look Like Dan Onset Of Flooding Dalam Pipa Vetikal
Author(s) -
Mahmuddin Mahmuddin,
Samsul Kamal,
Indarto Indarto,
Purnomo Purnomo
Publication year - 2012
Publication title -
jurnal teknik industri
Language(s) - English
Resource type - Journals
eISSN - 2527-4112
pISSN - 1978-1431
DOI - 10.22219/jtiumm.vol12.no2.182-191
Subject(s) - hydraulic jump , inlet , countercurrent exchange , reynolds number , mechanics , pressure gradient , jump , materials science , flow (mathematics) , hydrology (agriculture) , geology , geotechnical engineering , physics , thermodynamics , turbulence , geomorphology , quantum mechanics
Experiments have been conducted on countercurrent flow of air and water in pipe of 24 mm diameter. Flow patterns observations, measurement of the pressure gradient and film thickness conducted at water Reynolds numbers (ReL) are varied 322, 465, 630 and 709 combined to injectedair with velocity from 1.845 m/s to 6.148 m/s at a distance of 400 mm, 1600 mm and 2200 mm from the water inlet. The data showed that the pressure gradient and film thicknessdid not increase appreciably until just before the onset of flooding. Otherwise, when flooding conditions wave propagation in surface the film flow from the bottom of air inlet, increasing film thickness gradually and pressure gradient also increase quickly. Increasing film thikcness gradually indicated as phenomenon hydraulic jump look like.