Most of the current Eulerian vortex identification criteria, including the Q criterion and the λ ci
criterion, are exclusively determined by the eigenvalues of the velocity gradient tensor or the …

This study derives and compares vortex identification methods for detecting vortices in
planar velocity fields. Two-dimensional (2D) forms of the commonly used Δ, Q, λ ci, and λ 2 …

New experimental research is presented on the characteristics of interfaces and internal
shear layers that are present in a turbulent boundary layer (TBL). The turbulent/non …

Six core issues for vortex definition and identification concern with (1) the absolute
strength,(2) the relative strength,(3) the rotational axis,(4) the vortex core center,(5) the …

The study of flow and heat transfer through porous media or randomly packed beds is
important as these configurations are widely used in many engineering applications, for …

Recently, a vector named Rortex was proposed to represent the local fluid rotation [C. Liu et
al.,“Rortex—A new vortex vector definition and vorticity tensor and vector decompositions,” …

To further interpret the control mechanisms of leading-edge micro-cylinders for flow
separation in a Wells turbine, the residual circulation budget was performed through an …

Direct numerical simulations of temporally evolving compressible mixing layers are
performed to study the baroclinic vorticity generation due to the interaction between the …

The relation between shearing motions and the turbulent/non-turbulent interfacial (TNTI)
layer is studied with direct numerical simulation of a temporally evolving planar jet. Small …

The study of flow and heat transfer through a bundle of rods is important, as this type of
configuration is widely used in many engineering applications, for example, in heat …