Abstract
To understand the mechanism of the multi-scale nature of turbulent flows, the interaction between the turbulence flow and the two special multi-scale fractal shaped geometries (SF2 and SF3) with high Reynolds numbers in a pipe is investigated by detached-eddy simulation (DES). As compared to the circular orifice, more mixing structures are generated after the fractal shape orifice. The numerical mean velocity profiles along the pipe show a good agreement with the experiment values obtained by hotwire anemometry. These show the feasibility of DES to be applied to study the problem.
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Zheng, H.W., Nicolleau, F.C.G.A., Qin, N. (2010). Assessment of DES on the Flow after a Snow-Flake Orifice. In: Peng, SH., Doerffer, P., Haase, W. (eds) Progress in Hybrid RANS-LES Modelling. Notes on Numerical Fluid Mechanics and Multidisciplinary Design, vol 111. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-14168-3_13
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DOI: https://doi.org/10.1007/978-3-642-14168-3_13
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