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Turbulence - Wikipedia
The wake is the region of disturbed flow (often turbulent) downstream of a solid body moving through a fluid, caused by the flow of the fluid around the body. For a blunt body in subsonic external flow, for example the Apollo or Orion capsules during descent and landing, the wake is massively separated and behind the body is a reverse flow ...
a) stable, b) turbulent. In fluid dynamics, hydrodynamic stability is the field which analyses the stability and the onset of instability of fluid flows. The study of hydrodynamic stability aims to find out if a given flow is stable or unstable, and if so, how these instabilities will cause the development of turbulence. [1]
Experts have described turbulence as ‘common’ and asserted that it ‘rarely’ leads to fatalities.
Clear air turbulence can be caused by a number of factors and is generally harder to predict than the other two types, but it is also the most likely kind to affect aircraft. And because it's ...
Turbulent flow is defined as the flow in which the system's inertial forces are dominant over the viscous forces. This phenomenon is described by Reynolds number, a unit-less number used to determine when turbulent flow will occur. Conceptually, the Reynolds number is the ratio between inertial forces and viscous forces.
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In very sticky, viscous fluids (large ν), fluid motion is restricted, and natural convection will be non-turbulent. Following the treatment of the previous subsection, the typical fluid velocity is of the order of g Δ ρ L 2 / μ {\displaystyle g\Delta \rho L^{2}/\mu } , up to a numerical factor depending on the geometry of the system.