Axisymmetric three-dimensional gravity currents generated by lock exchange

• Published in: Journal of fluid mechanics Vol. 851; pp. 507 - 544
• Main Authors: Inghilesi, Roberto, Adduce, Claudia, Lombardi, Valentina, Roman, Federico, Armenio, Vincenzo
• Format: Journal Article
• Language: English
• Published: Cambridge, UK Cambridge University Press 25.09.2018
• Subjects: Approximation; Axisymmetric flow; Boussinesq approximation; Buoyancy; Computer simulation; Dimensional analysis; Exact solutions; Exchanging; Experiments; Flow rates; Fluid mechanics; Fluids; Frameworks; Froude number; Grashof number; Gravitation; Gravity; Hydrodynamics; Inflow; JFM Papers; Laboratories; Large eddy simulation; Phase transitions; R&D; Research & development; Reynolds number; Ring structures; Shallow water; Slumping; Spreading; Symmetry; Velocity distribution; turbulence simulation; shallow water flows; gravity currents

Unconfined three-dimensional gravity currents generated by lock exchange using a small dividing gate in a sufficiently large tank are investigated by means of large eddy simulations under the Boussinesq approximation, with Grashof numbers varying over five orders of magnitudes. The study shows that,...