in this paper, the accuracy of k- and k- turbulence models in super sonic boundary layer capturing of smooth/rough flat plates have been comprehensively investigated. among these investigations, some sorts of sensitivity analysis, including change in turbulence model, generated-grid density, near wall affects, c magnitude (for boundary layers generated on smooth flat plates), and change in c...

A preliminary version of this paper was presented at the AIAA Aviation 2020 forum (Paper 2020-2525).This provides an insight into grid generated turbulence for aeroacoustic studies. Several passive grids square bars were tested in open-jet facility University Bristol. The geometric properties and their position within tunnel contraction nozzle varied to quantify influence on average statistical...

The spreading of a tracer in a bubbly two-phase grid-generated turbulent flow system is studied. In this work both particle image velocimetry (PIV) and planer laser-induced <span style="font-size: 10pt...

Abstract Honeycombs are widely used to laminarize fluid streams by inhibiting the lateral components of fluctuating velocity. However, they also produce additional turbulence themselves due formation large-scale instabilities and breakup individual velocity profiles stemming from honeycomb cells. In present research, we use 2D-planar particle image velocimetry study how honeycomb-generated is a...