Hi,
I have a 1m long, 10mm ID vertical tube attached to a vacuum system. I have a known flow rate of the air down the tube which is used to calculate the air velocity.
My question is if I then add micrometre sized particles (initially at rest) to the air stream what is their velocity at the end of the tube?
I know that eventually the particles will reach the same velocity as the air stream they are suspended in but is the tube long enough to achieve this?
I have spent a long time googling various ideas about this and have drawn a blank on a simple solution and it might not even be possible (simply), so I hand the question over to the collective wisdom of Physics Forums :)
Kind Regards
Craig
I have a 1m long, 10mm ID vertical tube attached to a vacuum system. I have a known flow rate of the air down the tube which is used to calculate the air velocity.
My question is if I then add micrometre sized particles (initially at rest) to the air stream what is their velocity at the end of the tube?
I know that eventually the particles will reach the same velocity as the air stream they are suspended in but is the tube long enough to achieve this?
I have spent a long time googling various ideas about this and have drawn a blank on a simple solution and it might not even be possible (simply), so I hand the question over to the collective wisdom of Physics Forums :)
Kind Regards
Craig