[kach22i]

I'm assuming downwash and or upwash is not equal to attached flow because of what the surrounding air is doing.

That is to say: if the downwash attachment is being caused by a giant drag causing vortex, then you do NOT have clean pressure or evidence of attached flow.

Yes or no on the assumption and description above.

Pressure attachment Vs Flow attachment.

Is there an article on this?

........................part II of post.

In general the objections I have about template use is the it's shadow obscuring adjacent subjects.

Sure we take time to discuss air curtains, air tabs, diffusers and testing methods, but that shadow hovers overhead.

We need not destroy or perforate the template in order to shine light on other topics.

However, sometimes we have to shove it off to the side so we can look around and see what the real world is doing. And they are doing some cool things with air management that were never dreamed of in the 1930's because they didn't have the tools the industry has today.

Us novice type folks and Ecomodders do not have these industry tools.