Semi-local scaling and turbulence modulation in variable property turbulent channel flows

A new scaling property of turbulent flows.

A new scaling property of turbulent flows. Abstract We discuss a possible theoretical interpretation of the self scaling property of turbulent flows (Extended Self Similarity). Our interpretation predicts that, even in cases when ESS is not observed, a generalized self scaling, must be observed. This prediction is checked on a number of laboratory experiments and direct numerical simulations.

Delft University of Technology Scalar statistics in variable property turbulent channel flows

Estimating Global and Local Scaling Exponents in Turbulent Flows using Wavelet Transformations

High frequency longitudinal velocity (u) measurements were performed in the atmospheric boundary layer to investigate the inertial subrange structure of turbulence. Global and local scaling exponent distributions and other statistical properties were derived using continuous (CWT ) and critically sampled orthonormal (OWT ) wavelet transformations. These statistical measures were contrasted to s...

Assessment of Turbulent Models in Computation of Strongly Curved Open Channel Flows

Several rigorous turbulent models have been developed in the past years and it can be seen that more research is needed to reach a better understanding of their generality and precision by verifying their applications for distinct hydraulic phenomena; under certain assumptions. This survey evaluates the performance of Standard k-ε, Realizable k-ε, RNG k-ε, k-ω and RSM models in predicting flow ...

Comparison of large-scale amplitude modulation in turbulent boundary layers, pipes, and channel flows

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