- Kolmogorov time scale
- 科莫时间尺度
Atmospheric Sciences (English-Chinese) dictionary. 2014.
Atmospheric Sciences (English-Chinese) dictionary. 2014.
Kolmogorov microscales — are the smallest scales in turbulent flow. They are defined bywhere epsilon is the average rate of energy dissipation per unit mass, and u is the kinematic viscosity of the fluid.In his 1941 theory, A. N. Kolmogorov introduced the idea that the… … Wikipedia
First-hitting-time model — In statistics, first hitting time models are a sub class of survival models. The first hitting time, also called first passage time, of a set A with respect to an instance of a stochastic process is the time until the stochastic process first… … Wikipedia
Turbulence — In fluid dynamics, turbulence or turbulent flow is a fluid regime characterized by chaotic, stochastic property changes. This includes low momentum diffusion, high momentum convection, and rapid variation of pressure and velocity in space and… … Wikipedia
Magnetohydrodynamic turbulence — Magnetohydrodynamics (MHD) deals with what is a quasi neutral fluid with very high conductivity. The fluid approximation implies that the we focus at macro length and time scales which are much larger than the collision length and collision time… … Wikipedia
Astronomical seeing — Schematic diagram illustrating how optical wavefronts from a distant star may be perturbed by a layer of turbulent mixing in the atmosphere. The vertical scale of the wavefronts plotted is highly exaggerated. Astronomical seeing refers to the… … Wikipedia
Direct numerical simulation — A direct numerical simulation (DNS)[1] is a simulation in computational fluid dynamics in which the Navier Stokes equations are numerically solved without any turbulence model. This means that the whole range of spatial and temporal scales of the … Wikipedia
probability theory — Math., Statistics. the theory of analyzing and making statements concerning the probability of the occurrence of uncertain events. Cf. probability (def. 4). [1830 40] * * * Branch of mathematics that deals with analysis of random events.… … Universalium
Multiverse — For other uses, see Multiverse (disambiguation). Physical cosmology … Wikipedia
Control theory — For control theory in psychology and sociology, see control theory (sociology) and Perceptual Control Theory. The concept of the feedback loop to control the dynamic behavior of the system: this is negative feedback, because the sensed value is… … Wikipedia
Dynamical system — This article is about the general aspects of dynamical systems. For technical details, see Dynamical system (definition). For the study, see Dynamical systems theory. Dynamical redirects here. For other uses, see Dynamics (disambiguation). The… … Wikipedia
Integral — This article is about the concept of integrals in calculus. For the set of numbers, see integer. For other uses, see Integral (disambiguation). A definite integral of a function can be represented as the signed area of the region bounded by its… … Wikipedia