- #1
Trying2Learn
- 375
- 57
- TL;DR Summary
- Why do umbrellas flip?
Today, I was walking during a heavy rain with winds.
But I swear to you, the wind kept blowing in one direction.
Despite this, the umbrella kept inverting.
I understand if the wind was turbulent, but it was not.
So is there a boundary layer on the umbrella that makes the wind (again, when the wind is blowing one way), curl around and under?
Or is the presence of my own physical body enough to induce a vortext that causes the flip?
I understand if the wind was turbulent, but this happens when there is no turbulent wind (I think -- or am I just not "aware" that a turbulent vortex is passing by me")
And if there is a cause of the flip (during what "appears" to me to be a lanimar flow), is there any preventative action I can take to stop the flip?
But I swear to you, the wind kept blowing in one direction.
Despite this, the umbrella kept inverting.
I understand if the wind was turbulent, but it was not.
So is there a boundary layer on the umbrella that makes the wind (again, when the wind is blowing one way), curl around and under?
Or is the presence of my own physical body enough to induce a vortext that causes the flip?
I understand if the wind was turbulent, but this happens when there is no turbulent wind (I think -- or am I just not "aware" that a turbulent vortex is passing by me")
And if there is a cause of the flip (during what "appears" to me to be a lanimar flow), is there any preventative action I can take to stop the flip?