GVSURob
Registered User
What ever you do, don't read this!
Greetings! Here's some food for thought,
After a long run sometimes I'll draw a hot bath of water and treat my legs to some relaxation. After I let my legs sit for about 20 minutes I'll then start a shower and clean up a bit. I've noticed that while the bath water is still at ankle level and up, the shower curtain swells into the shower (which is quite annoying I might add). Today I put all those hours of ASTB study together and tried to figure out why this is happening. This is what I came up with:
Since we all know (if you don't you need to print out the gouge from this site and study it!) warm humid air is lighter than cooler dry air, therefore the hot water at my ankles is creating moisture and heat in the air above it... causing it to rise up and roll over ther top of the shower curtain. The law of equal and opposite reaction therefore brings air in (from the sides) to the shower replacing the air that's rolling over the top. The reason (and this is where I'm kind of stuck) the shower curtain swells in is because either A.) the cooler air outside the shower is of higher pressure, causing the curtain to swell in, or B.) the air inside the shower is moving up and out at a faster speed inside the shower than the air is moving around outside the shower making the shower curtain swell inward. I'm pretty confident that B is right, but does A make a difference at all? Also, I found that pulling the shower curtain further away from the sides of the shower wall makes less and less swell, with no swell at all occuring at a certain point.
Guess I'm a geek, but does anyone else have any thoughts on the issue?
Thanks!
Robert Mathey
Grand Rapids, MI
Greetings! Here's some food for thought,
After a long run sometimes I'll draw a hot bath of water and treat my legs to some relaxation. After I let my legs sit for about 20 minutes I'll then start a shower and clean up a bit. I've noticed that while the bath water is still at ankle level and up, the shower curtain swells into the shower (which is quite annoying I might add). Today I put all those hours of ASTB study together and tried to figure out why this is happening. This is what I came up with:
Since we all know (if you don't you need to print out the gouge from this site and study it!) warm humid air is lighter than cooler dry air, therefore the hot water at my ankles is creating moisture and heat in the air above it... causing it to rise up and roll over ther top of the shower curtain. The law of equal and opposite reaction therefore brings air in (from the sides) to the shower replacing the air that's rolling over the top. The reason (and this is where I'm kind of stuck) the shower curtain swells in is because either A.) the cooler air outside the shower is of higher pressure, causing the curtain to swell in, or B.) the air inside the shower is moving up and out at a faster speed inside the shower than the air is moving around outside the shower making the shower curtain swell inward. I'm pretty confident that B is right, but does A make a difference at all? Also, I found that pulling the shower curtain further away from the sides of the shower wall makes less and less swell, with no swell at all occuring at a certain point.
Guess I'm a geek, but does anyone else have any thoughts on the issue?
Thanks!
Robert Mathey
Grand Rapids, MI
