The Taylor microscale, which is sometimes called the turbulence length scale, is a length scale used to characterize a turbulent fluid flow. This microscale is named after Geoffrey Ingram Taylor. The Taylor microscale is the intermediate length scale at which fluid viscosity significantly affects the dynamics of turbulent eddies in the flow. This length scale is traditionally applied to turbulent flow which can be characterized by a Kolmogorov spectrum of velocity fluctuations. In such a flow, length scales which are larger than the Taylor microscale are not strongly affected by viscosity. These larger length scales in the flow are generally referred to as the . Below the Taylor microscale the turbulent motions are subject to strong viscous forces and kinetic energy is dissipated into heat
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| - Taylor microscale (en)
- Microescala de Taylor (pt)
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| - The Taylor microscale, which is sometimes called the turbulence length scale, is a length scale used to characterize a turbulent fluid flow. This microscale is named after Geoffrey Ingram Taylor. The Taylor microscale is the intermediate length scale at which fluid viscosity significantly affects the dynamics of turbulent eddies in the flow. This length scale is traditionally applied to turbulent flow which can be characterized by a Kolmogorov spectrum of velocity fluctuations. In such a flow, length scales which are larger than the Taylor microscale are not strongly affected by viscosity. These larger length scales in the flow are generally referred to as the . Below the Taylor microscale the turbulent motions are subject to strong viscous forces and kinetic energy is dissipated into heat (en)
- A microescala de Taylor é uma escala de comprimento usada para caracterizar um fluxo fluido turbulento. A microescala de Taylor é a maior escala de comprimento na qual a viscosidade de fluido afeta significativamente a dinâmica turbilhonamentos no fluxo. Esta escala de comprimento é tradicionalmente aplicada a fluxo turbulento o qual pode ser caracterizado por um espectro de flutuações de velocidade de Kolmogorov. Em tal fluxo, escalas de comprimento as quais são maiores que a microescala de Taylor não são fortemente afetadas pela viscosidade. (pt)
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| - The Taylor microscale, which is sometimes called the turbulence length scale, is a length scale used to characterize a turbulent fluid flow. This microscale is named after Geoffrey Ingram Taylor. The Taylor microscale is the intermediate length scale at which fluid viscosity significantly affects the dynamics of turbulent eddies in the flow. This length scale is traditionally applied to turbulent flow which can be characterized by a Kolmogorov spectrum of velocity fluctuations. In such a flow, length scales which are larger than the Taylor microscale are not strongly affected by viscosity. These larger length scales in the flow are generally referred to as the . Below the Taylor microscale the turbulent motions are subject to strong viscous forces and kinetic energy is dissipated into heat. These shorter length scale motions are generally termed the . Calculation of the Taylor microscale is not entirely straightforward, requiring formation of certain flow correlation function(s), then expanding in a Taylor series and using the first non-zero term to characterize an osculating parabola. The Taylor microscale is proportional to , while the Kolmogorov microscale is proportional to , where is the integral scale Reynolds number. A turbulence Reynolds number calculated based on the Taylor microscale is given by where is the root mean square of the velocity fluctuations.The Taylor microscale is given as where is the kinematic viscosity, and is the rate of energy dissipation. A relation with turbulence kinetic energy can be derived as The Taylor microscale gives a convenient estimation for the fluctuating strain rate field (en)
- A microescala de Taylor é uma escala de comprimento usada para caracterizar um fluxo fluido turbulento. A microescala de Taylor é a maior escala de comprimento na qual a viscosidade de fluido afeta significativamente a dinâmica turbilhonamentos no fluxo. Esta escala de comprimento é tradicionalmente aplicada a fluxo turbulento o qual pode ser caracterizado por um espectro de flutuações de velocidade de Kolmogorov. Em tal fluxo, escalas de comprimento as quais são maiores que a microescala de Taylor não são fortemente afetadas pela viscosidade. Estas escalas de maior comprimento no fluxo são geralmente referidas como o . Abaixo da microescala de Taylor os movimentos turbulentos são sujeitos a fortes forças viscosas e a energia cinética é dissipada em calor. Estas escalas de movimento de comprimento mais curto são genericamente denominadas . O cálculo da microescala de Taylor não é inteiramente de desenvolvimento claro e formal, necessitando a formação de determinada(s) função (ou funções) de correlação do fluxo, então expandindo-se em uma série de Taylor e usando o primeiro termo não nulo para caracterizar uma parábola osculante. A microescala de Taylor é intimamente relacionada às microescalas de Kolmogorov. Esta microescale é nomeada em honra a Geoffrey Ingram Taylor. (pt)
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