Abstract
We are now concerned with fully developed turbulence. However, before we derive the equations of motion for turbulent flow in Chap. 5, we summarize in this chapter the most important characteristics and physical properties of turbulent flow.
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Notes
- 1.
In case we consider the diffusion of heat with a molecular diffusion coefficient \(\alpha \), \(\chi \) refers to the temperature, and the ratio \(Pr = \nu /\alpha \) is the so-called Prandtl number.
- 2.
Hence, this implementation is often referred to as constant temperature anemometry (CTA).
- 3.
Dedicated LDV systems that use three laser beam pairs can measure all three velocity components.
- 4.
The relative error for the velocity is based on the displacement measurement error relative to the (nominal) maximum measurable displacement in each sub-image domain.
- 5.
This increase in DNS performance that is reflected in the resolved flow Reynolds number from 1994 to 2008 is in accordance with Moore’s law that computer resources double about every 18 months.
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Nieuwstadt, F.T.M., Boersma, B.J., Westerweel, J. (2016). The Characteristics of Turbulence. In: Turbulence. Springer, Cham. https://doi.org/10.1007/978-3-319-31599-7_4
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DOI: https://doi.org/10.1007/978-3-319-31599-7_4
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