Scaling of the puffing Strouhal number for buoyant jets and plumes

Optimal mixing of buoyant jets and plumes in stratified fluids: theory and experiments

Complete List of Authors: Camassa, Roberto; The University of North Carolina at Chapel Hill, Department of Mathematics Lin, Zhi; Zhejiang University, Department of Mathematics McLaughlin, Richard; University of North Carolina at Chapel Hill, Department of Mathematics Mertens, Keith; University of North Carolina at Chapel Hill, Department of Mathematics Tzou, Chung-Nan; The University of North C...

A finite-difference analysis of turbulent, axisymmetric, buoyant jets and plumes

Strouhal-Reynolds number relationship for vortex streets.

A rationale for the empirically observed Strouhal-Reynolds number relation for vortex shedding in the wake of a cylinder is provided. This rationale derives from a mechanism of vortex formation observed in numerical simulations of two-dimensional vortex shedding coupled with an order of magnitude estimate of the terms in the vorticity transport equation based on this mechanism.

Large-eddy simulation of starting buoyant jets

Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. Abstract A series of Large Eddy Simulations (LES) are performed to investigate the penetration of starting buoyant ...

Experiments on stability and oscillatory behavior of planar buoyant plumes

Experiments on the onset of buoyant instabilities leading to periodic formation of vortical structures in planar buoyant plumes of helium and helium/air mixtures injected into quiescent air are reported for a range of nozzle widths (w520– 70 mm), plume fluid densities ~pure helium to that approaching air!, and velocities at the nozzle exit. First, the plume parameters corresponding to the onset...