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13:02
Three-dimensional Particle Tracking Velocimetry for Turbulence Applications: Case of a Jet Flow
Published on: February 27, 2016
Lagrangian turbulence in nonstationary 2-D flows
A. A. Chernikov1, A. I. Neishtadt, A. V. Rogal'sky
1Space Research Institute, Profsoyuznaya 84/32, Moscow 117810, USSRInstitute of Physics, Krasnoyarsk 660036, USSR.
Chaos (Woodbury, N.Y.)
|August 1, 1991
Summary
This study explores Lagrangian particle transport in 2-D flows. Analytical and numerical methods confirm theoretical diffusion coefficients in the adiabatic regime.
Area of Science:
- Fluid dynamics
- Plasma physics
- Geophysics
Background:
- Understanding particle transport is crucial in various scientific fields.
- Nonstationary flows present complex challenges for predicting particle trajectories.
- Lagrangian analysis offers a detailed perspective on particle movement.
Purpose of the Study:
- To investigate Lagrangian particle transport in two-dimensional (2-D) nonstationary flows.
- To derive analytical expressions for diffusion coefficients.
- To validate theoretical findings through numerical simulations.
Main Methods:
- Analytical derivation of diffusion coefficients.
- Numerical estimation of particle diffusion.
- Comparison of analytical and numerical results.
Main Results:
- Obtained analytic expressions for diffusion coefficients under adiabatic conditions.
- Numerical estimates of diffusion coefficients align with theoretical predictions.
- Demonstrated the validity of the analytical approach.
Conclusions:
- The study successfully models Lagrangian particle transport in 2-D nonstationary flows.
- Analytical results for diffusion coefficients are robust, particularly in the adiabatic regime.
- Numerical simulations confirm the accuracy of the derived theoretical expressions.
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