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Established in 1987, the Center for Turbulence Research is devoted to fundamental studies of turbulent flows. The main elements of the Center are a research fellows program, a biennial summer program, seminars and conferences. [2] CTR is known for fundamental studies in turbulent flows along with large scale numerical investigations. [3] [4] [5]
Sign on the Trans-Canada Highway near Winnipeg, marking the longitude centre of Canada. The rural village of Taché, Mantioba, east of Winnipeg on the Trans-Canada Highway, has a sign at 96°48'35"W that proclaims it the longitudinal centre of Canada. [1] The sign was upgraded with the opening of Centre of Canada Park in 2017. [2]
The study of hydrodynamic stability aims to find out if a given flow is stable or unstable, and if so, how these instabilities will cause the development of turbulence. [1] The foundations of hydrodynamic stability, both theoretical and experimental, were laid most notably by Helmholtz, Kelvin, Rayleigh and Reynolds during the nineteenth ...
Large eddy simulation of a turbulent gas velocity field.. Large eddy simulation (LES) is a mathematical model for turbulence used in computational fluid dynamics.It was initially proposed in 1963 by Joseph Smagorinsky to simulate atmospheric air currents, [1] and first explored by Deardorff (1970). [2]
Two generic types of wave turbulence should be distinguished: statistical wave turbulence (SWT) and discrete wave turbulence (DWT). In SWT theory exact and quasi-resonances are omitted, which allows using some statistical assumptions and describing the wave system by kinetic equations and their stationary solutions – the approach developed by Vladimir E. Zakharov.
However, turbulence has long resisted detailed physical analysis, and the interactions within turbulence create a very complex phenomenon. Physicist Richard Feynman described turbulence as the most important unsolved problem in classical physics.
where ε is the average rate of dissipation of turbulence kinetic energy per unit mass, and; ν is the kinematic viscosity of the fluid.; Typical values of the Kolmogorov length scale, for atmospheric motion in which the large eddies have length scales on the order of kilometers, range from 0.1 to 10 millimeters; for smaller flows such as in laboratory systems, η may be much smaller.