73th Annual Meeting of the APS Division of Fluid Dynamics (November 22, 2020 — November 24, 2020)

V0015: Pulsating shock waves at Mach 6

  • Vaisakh Sasidharan, Indian Institute of Science
  • Subrahmanyam Duvvuri, Indian Institute of Science
DOI: https://doi.org/10.1103/APS.DFD.2020.GFM.V0015

Shock waves commonly occur in flows where fluid velocity exceeds the local sound speed, i.e. Mach number (M) goes above 1. Certain flow scenarios with M > 1 can exhibit unsteady motion of shock waves. This video demonstrates such behavior in a hypersonic flow at M = 6, where a geometrically simple object placed in a uniform flow gives rise to visually rich and scientifically interesting phenomena of pulsating/oscillating shock waves.

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