Prandtl's Mixing Length Hypothesis is a theoretical model used to describe turbulence in fluid flow, proposing that the turbulent eddies have a characteristic size or 'mixing length' that influences momentum transfer. It simplifies the complex nature of turbulence by relating the velocity fluctuations to the mean velocity gradient, providing a basis for calculating turbulent viscosity in boundary layers.

Prandtl's Mixing Length Hypothesis

Turbulence in fluid flow

Turbulent eddies

Mixing length

Momentum transfer refers to the process by which momentum is exchanged between objects or systems, often occurring during collisions or interactions in fluid dynamics. It's a fundamental concept in physics that explains how forces are transmitted and how motion is affected in both macroscopic and microscopic systems.

Momentum Transfer

Velocity fluctuations refer to changes in the speed and direction of a fluid's particles, which are crucial in understanding turbulence and mixing processes in fluid dynamics. These fluctuations can significantly impact various engineering and environmental systems by affecting fluid flow behavior, heat transfer, and mass transport.

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