日期: 2024年2月2日，星期五，4:00 PM（伦敦时间）
2024年2月3日，星期六，12:00 AM（北京时间）
Experiments and numerical simulations have shown that turbulence in transitional wall-bounded shear flows such as plane Couette and Poiseuille flow frequently takes the form of long oblique bands, if the domains are sufficiently large to accommodate them. At their upper Reynolds-number threshold, laminar regions carve out gaps in otherwise uniform turbulence, thereby forming regular oblique turbulent-laminar patterns with a large spatial wavelength. At the lower threshold, isolated turbulent bands sparsely populate otherwise laminar domains and complete laminarization takes place via their disappearance characterized by the 2D directed percolation scenario.
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Speaker
Laurette Tuckerman
Laurette Tuckerman is a senior researcher at PMMH (Physique et Mecanique des Milieux Heterogenes), an institute affiliated with the CNRS (Centre National de la Recherche Scientifique), ESPCI and Sorbonne University. Prior to this, she was at the University of Texas at Austin and she obtained her bachelors and PhD degrees from Princeton and MIT. She studies hydrodynamic instabilities (such as those in Couette flows, thermal convection, and Faraday waves) using the methods of computational fluid dynamics and of bifurcation theory. She also studies the laminar-turbulent patterns which occur during transition to turbulence in wall-bounded shear flows. She is a Fellow of the American Physical Society and of Euromech.
Host
Journal of Fluid Mechanics
Flow: Applications of Fluid Mechanics
Leeds Institute for Fluid Dynamics
Department of Applied Mathematics and Theoretical Physics
UK Fluids Network
*本文由剑桥大学出版社北京办公室编译，中文内容仅供参考，请以原文为准。如需转载，请联系FLM_Flow@cambridge.org。
JFM&Flow
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