Quote Originally Posted by Riverkilt
... Just wondering if there are any experts out there who can explain/refer to an article, about how that all works...What effect is there from walking and swishing the kilt around, raising it to pee, strong cold winds, etc.
The way I understand it...
Fast moving air creates a lower air pressure. You can test this by holding the leading corners of a piece of printer paper with thumbs and forefingers, then blow firmly across the top side. Watch the limp unsupported edge rise up as you blow. The pleats of your kilt move outward from the same forces. Your pleats are in effect "sucked" outward by the moving air. I have doubts however that stack effect would be much of a factor.