Shock oscillation in highly underexpanded jets Project supported by the National Natural Science Foundation of China (Grant No. 11602028) and the Science and Technology Project of General Administration of Quality Supervision Inspection and Quarantine of China (Grant Nos. 2017QK119 and 2017QK188). |
(color online) Radial positions of maximum value of Ω, revealing shock oscillation phenomenon for NPR = 5.60 at y/D of (a) 6 and (b) 8. The empty circles with black solid lines correspond to those in Figs. |