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2

Good question. My Problem is that I can't give you a "Mainstream answer". The reason is that Turbulence is considered happening In three space dimensions and time, given an initial velocity field, there exists a vector velocity and a scalar pressure field, which are both smooth and globally defined, that solve the Navier–Stokes equations. But with these ...

2

Rotational and turbulent motion cannot "deepen" the gravity well in a galaxy of galaxy cluster. The contribution of kinetic energy to the stress-energy tensor is negligible compared to the rest-mass energy in non-relativistic systems. Assuming you mean something like, 'how does rotational and turbulent motion contribute to the equilibrium configuration of ...

4

A crude model of the UTE is used simulate the pressure field created by the car as it travels through atmospheric air. We must determine the pressure in truck bed because it applies force on the surfboard. The car travels at a constant $60 ~\text{mph}$ (an arbitrary, worst-case value). UPPER: The velocity profile of air flowing around the car. ...

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Not sure it's what you aim at (maybe you should give more context about your studied fluid cases and your scales of interest), but since there are no other answers yet: The geometry of your experiment surely impacts (polluting with structures) the spatial spectrum through several scales. The events in your experiment surely impacts (polluting with ...

-1

The ground effect that is used in the F1 cars make a large pressure differential between the upper and the lower board surfaces. If the air can flow freely bellow the surfboard it will fly away, otherwise it is 'glued' to your truck. Be precautious and lock it mechanically. EDIT ADD. The board behaves like a wing flying near the ground. Above it's upper ...

0

In practice, yes, but you wouldn't even need that: the simple fact that an obstacle pass through the air makes it push apart in front then sucked together on the rear, causing motion on the sides. But such viscous flow displacement would exist only close to the object, while wakes can be very long (see for instance behind cars, when there is some smoke or ...

3

Sorry but surf boards do fly out. You may not have experienced it personally but keep doing it the way you are and you are bound to experience it. If you are thinking that as the velocity of the air travels over car it is some how holding the boards in you are incorrect. Check out this article http://www.gcdataconcepts.com/carairflow.html "Actually the ...

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