LOW-DIMENSIONAL MODELING AND NUMERICAL SIMULATION OF TRANSITION IN SIMPLE SHEAR FLOWS
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摘要: 回顾了过去10年在壁湍流和自由剪切流转捩问题的数值研究中取得的重要进展, 介绍了数值方法和模式研究方面的进展, 以及由此带来的关于转捩理论认识上的进展. 对于壁面流动, 文中主要介绍了渐进稳定流动中``跨越(bypass)转捩''研究中的各种观点. 本文也简要介绍了对感受性和转捩控制方面的研究.Abstract: This review describes someof the important developments in the numerical investigation oftransition to turbulence in wall-bounded and free shear flows during thepast decade. The evolution of numerical techniques and models as wellas the advances in our theoretical understanding of the physics oflaminar-turbulent transition that were achieved using these tools aredescribed. For wall-bounded flows, particular emphasis is placed oninvestigations studying various scenarios of ``bypass transition'' inflows that are asymptotically stable. A brief review of investigationsinto receptivity and control of transitional flows is included.
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Key words:
- transition to turbulence /
- flow simulation /
- numerical methods /
- flow instability
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