Molecular diffusion and viscous effects on concentration statistics in grid turbulence

DOI10.1017/S0022112096007823zbMath0885.76039MaRDI QIDQ4354040

Brian L. Sawford, M. S. Borgas

Publication date: 22 April 1998

Published in: Journal of Fluid Mechanics (Search for Journal in Brave)

zbMATH Keywords

concentration-fluctuation measurementsdecaying wind-tunnel turbulenceThomson's formulationtwo-particle Lagrangian models

Mathematics Subject Classification ID

Diffusion (76R50) Isotropic turbulence; homogeneous turbulence (76F05)

Related Items (6)

Anomalous diffusion originated by two Markovian hopping-trap mechanisms ⋮ Turbulent dispersion from line sources in grid turbulence ⋮ Kinematic simulation of fully developed turbulent channel flow ⋮ Turbulent dispersion with broken reflectional symmetry ⋮ Dependence on the initial conditions of scalar mixing in the turbulent wake of a circular cylinder ⋮ Lagrangian statistics in uniform shear flow: Direct numerical simulation and Lagrangian stochastic models

Cites Work

• On the continuity of stochastic models for the Lagrangian velocity in turbulence
• A three-dimensional stochastic model for concentration fluctuation statistics in isotropic homogeneous turbulence
• On the effect of the molecular diffusivity in turbulent diffusion
• Structure of the temperature field downwind of a line source in grid turbulence
• Effects of turbulence structure, molecular diffusion and source size on scalar fluctuations in homogeneous turbulence
• Criteria for the selection of stochastic models of particle trajectories in turbulent flows
• A stochastic model of two-particle dispersion and concentration fluctuations in homogeneous turbulence
• Analysis of the decay of temperature fluctuations in isotropic turbulence
• A stochastic model for the motion of particle pairs in isotropic high-Reynolds-number turbulence, and its application to the problem of concentration variance
• Stochastic equations with multifractal random increments for modeling turbulent dispersion

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