Momentum, Heat, and Mass Transfer by Leo Lue

Author:Leo Lue
Language: eng
Format: epub
Publisher: Bookboon.com Ltd.
Published: 2014-04-23T00:00:00+00:00

9 Statistical treatment of turbulence

9.1 Introduction

In turbulent flows, the various properties of the fluid, such as the velocity, pressure, etc., vary in a very complicated manner with position and time. The instantaneous values of these properties appear to behave almost randomly with time. Luckily, however, we are generally not interested in the instantaneous properties of a fluid flow; rather, we want information on how the average properties vary. These average properties vary in a regular manner and can be modeled (at least approximately) even for a turbulent flow.

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