Non-equilibrium turbulent phenomena in the flow over a backward-facing ramp
Applied Mathematics and Mechanics (English Edition), ISSN: 1573-2754, Vol: 40, Issue: 2, Page: 215-236
2019
- 8Citations
- 5Captures
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Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
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Metrics Details
- Citations8
- Citation Indexes8
- CrossRef2
- Captures5
- Readers5
Article Description
Non-equilibrium turbulence phenomena have raised great interests in recent years. Significant efforts have been devoted to non-equilibrium turbulence properties in canonical flows, e.g., grid turbulence, turbulent wakes, and homogeneous isotropic turbulence (HIT). The non-equilibrium turbulence in non-canonical flows, however, has rarely been studied due to the complexity of the flows. In the present contribution, a directnumerical simulation (DNS) database of a turbulent flow is analyzed over a backwardfacing ramp, the flow near the boundary is demonstrated, and the non-equilibrium turbulent properties of the flow in the wake of the ramp are presented by using the characteristic parameters such as the dissipation coefficient C and the skewness of longitudinal velocity gradient S, but with opposite underlying turbulent energy transfer properties. The equation of Lagrangian velocity gradient correlation is examined, and the results show that non-equilibrium turbulence is the result of phase de-coherence phenomena, which is not taken into account in the modeling of non-equilibrium turbulence. These findings are expected to inspire deeper investigation of different non-equilibrium turbulence phenomena in different flow conditions and the improvement of turbulence modeling.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85060242380&origin=inward; http://dx.doi.org/10.1007/s10483-019-2428-6; http://link.springer.com/10.1007/s10483-019-2428-6; http://link.springer.com/content/pdf/10.1007/s10483-019-2428-6.pdf; http://link.springer.com/article/10.1007/s10483-019-2428-6/fulltext.html; http://sciencechina.cn/gw.jsp?action=cited_outline.jsp&type=1&id=6424559&internal_id=6424559&from=elsevier; https://dx.doi.org/10.1007/s10483-019-2428-6; https://link.springer.com/article/10.1007/s10483-019-2428-6
Springer Science and Business Media LLC
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