Scalings and decay of homogeneous, nearly isotropic turbulence behind a jet array
Shiyong Tan, Xu Xu, Yinghe Qi, Rui Ni
Abstract
In the study of dispersed multiphase turbulence, using a jet array has shown promise in creating intense homogeneous, nearly isotropic turbulence with high dissipation rates in water and wind tunnels. However, the scaling of turbulent characteristics with jet nozzle diameter, velocity, and downstream location has not been fully explored. Our research, combined with previous experiments focusing on near-field measurements, offers a comprehensive understanding of the decay of kinetic energy and energy dissipation rate, as well as the flow inhomogeneity and anisotropy generated by a jet array.
Topics & Concepts
TurbulenceDissipationIsotropyTurbulence kinetic energyJet (fluid)PhysicsMechanicsScalingAnisotropyNozzleKinetic energyHomogeneousHomogeneous isotropic turbulenceComputational physicsClassical mechanicsOpticsStatistical physicsThermodynamicsReynolds numberDirect numerical simulationGeometryMathematicsAerodynamics and Acoustics in Jet FlowsFluid Dynamics and Turbulent FlowsWind and Air Flow Studies