Abstract
Two parallel pipe jets of 20 mm diameter were placed 1.2 mm diameter apart and were connected by a 4 mm wide channel all along the central plane of the jets. The mean velocity flow field of the jets was investigated for three Reynolds number 16300, 34400 and 49200. The Reynolds number was based on the exit velocity of the jets and jet diameter. The experiment was performed in an air jet facility and yaw meter was used for measurement of mean velocity and its direction. Their variations along the longitudinal, transverse, and lateral directions have been analyzed. A significant change of the jet flow field is observed near the exit of the jet. The combined effect of the jets diminishes the presence of recirculation region at the immediate exit rather enhances the energy and momentum transfer between their individual flow fields. Static pressure and kinetic energy distribution are also studied and a momentous variations have been noticed with varying Reynolds number.
Highlights
Experimental Study of Twin Connected Pipe JetsThe mean velocity flow field of the jets was investigated for three Reynolds number 16300, 34400 and 49200
Jet flow is one of the most significant phenomena in the field of engineering due to its numerous applications
Effect of connecting twin jets at a smaller space ratio of S/D=1.2 is investigated in this experiment at three different Reynolds number (Re=16300, 34400 and 49200)
Summary
The mean velocity flow field of the jets was investigated for three Reynolds number 16300, 34400 and 49200. The experiment was performed in an air jet facility and yaw meter was used for measurement of mean velocity and its direction Their variations along the longitudinal, transverse, and lateral directions have been analyzed. The interaction of two plane parallel jets was experimentally observed by Elbana et al [10], where they found that mean velocity distribution of the parallel jets resembles the behavior of single jet after the combined point. Experimentally investigated the flowfield of dual, parallel planar turbulent jet. Their results show that decay rates of mean velocity for the twin jet tend to a single jet result in the far flow field. Hamaili et al [16] examined the influence of weak jet on strong jet numerically and found that weak jet attracts strong jet which tends to expand upto 30D to 40D where jet presents similar properties like single jet
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