Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : November 11, 2020 - November 13, 2020
Direct numerical simulations are carried out to investigate the effect of shear layer thickness on jet diffusion and the pressure fluctuations emitted during diffusion by amplifying of helical modes pair in a M=2.0 supersonic jet. In the DNS, a jet is forced by a pair of unstable third helical modes at t=0. The DNS results show that when the start time of jet diffusion is the same, the pressure fluctuation level emitted during jet diffusion is almost the same regardless of the shear layer thickness.
