Quote:
Originally Posted by aerohead
------------------------------------------------------------------------------------
* As to inviscid flow / pressure, you're off base. Here's a checklist:
1) the body determines the streamlines.
2) streamlines determine local velocity at any point.
3) velocity is responsible for pressure.
4) pressure determines whether the boundary layer will be attached or not.
5) even a turbulent boundary layer can sustain only so much pressure rise in the direction of flow.
6) if that threshold is crossed, the boundary layer will separate from the contour, beginning the turbulent wake.
|
All correct!
Quote:
|
9) if airflow 'wrapped' over a body, the streamlines would diverge, velocity slow, and pressure increase. You'd have the highest pressure attainable.
|
Incorrect - as about a million streamline pics show. Here's one:
Note the airflow wrapping around those upper curves. Note how the streamlines get closer together. Note how this indicates higher airflow speed and lower pressure.
How you can seamlessly segue from correct material to absolute rubbish is beyond me.