Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : November 29, 2018 - November 30, 2018
Side jets are radial ejections formed at the initial region of a jet. It is known that the side jets are generated in a sufficiently low density jet. However, it was recently found that the side jets are formed in the initial region of a round jet when the density ratio is unity. A relationship between the side-jets formation and the non-dimensional velocity gradient is experimentally examined in isothermal air jets. The value of non-dimensional velocity gradient at the nozzle exit has lower and upper limits for the side-jets formation. Also, there is hysteresis in the values of the lower and upper limits.
