Characterization of velocity-gradient dynamics in incompressible turbulence using local streamline geometry
Rishita Das, Sharath S. Girimaji
Abstract
This study develops a comprehensive description of local streamline geometry and uses the resulting shape features to characterize velocity gradient ( CMTs through different topologies correlate well with the corresponding population fractions. These findings not only lead to improved understanding of non-local dynamics, but also provide an important foundation for developing Lagrangian velocity-gradient models.
Topics & Concepts
TurbulenceDynamics (music)PhysicsCompressibilityCharacterization (materials science)MechanicsClassical mechanicsIncompressible flowGeometryComputational fluid dynamicsTwo-dimensional flowFlow (mathematics)VorticityK-epsilon turbulence modelTurbulence modelingReynolds numberFluid Dynamics and Turbulent FlowsComputational Fluid Dynamics and AerodynamicsAdvanced Numerical Methods in Computational Mathematics