- #1
Anashim
- 40
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In:
"Fluid Dynamics", Chapter 3 (Turbulence), Section 26,
Landau and Lifchitz analyze the problem of the stability of a steady flow past a body of finite size.
The fluid is assumed to be incompressible and they reach the conclusion that perturbations that deviate from steady flows start to grow when a critical Reynolds number is reached (ASIK, this critical Reynolds number in unrelated to the ##\mathbb{Re}_c## at which the laminar flow becomes turbulent).
They also deduce that the amplitude of the perturbation grows proportional to:
$$A\propto\sqrt{Re-Re_c}$$.
Would this be at the origin of vortex shedding?
What's the name of this critical Reynolds number?
How does this relate to Strouhal's number?
Thank you very much in advance.
"Fluid Dynamics", Chapter 3 (Turbulence), Section 26,
Landau and Lifchitz analyze the problem of the stability of a steady flow past a body of finite size.
The fluid is assumed to be incompressible and they reach the conclusion that perturbations that deviate from steady flows start to grow when a critical Reynolds number is reached (ASIK, this critical Reynolds number in unrelated to the ##\mathbb{Re}_c## at which the laminar flow becomes turbulent).
They also deduce that the amplitude of the perturbation grows proportional to:
$$A\propto\sqrt{Re-Re_c}$$.
Would this be at the origin of vortex shedding?
What's the name of this critical Reynolds number?
How does this relate to Strouhal's number?
Thank you very much in advance.