78th Annual Meeting of the APS Division of Fluid Dynamics (Nov 23 — 25, 2025)

P017: Decompression of a granular solid being suddenly released from an elastic membrane.

Authors
  • Ayax Torres-Victoria, SEPI ESIME Azcapotzalco, Instituto Politénico Nacional.
  • Juan M. Casillas Navarrete , SEPI, ESIME Azcapotzalco, Instituto Politécnico Nacional
  • Salomon Peralta Lopez , SEPI ESIME Azcapotzalco Instituto Politecnico Nacional.
  • Abraham Medina Ovando , SEPI ESIME Azcapotzalco, Instituto Politecnico Nacional.
  • Abel López Villa , SEPI ESIME Azcapotzalco Instituto Politecnico Nacional

At an initial state, a latex balloon is half-filled with photo-luminiscent granules. While at rest, as the particles are being compressed by the membrane, they conform into a granular solid, and then they are suddenly released after a laser beam causes the membrane to rupture. Upon release, the granules are radially ejected, forming a crown of suspended particles that gradually separates from the vanishing granular solid left behind.

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