- #1
phsieh2005
- 4
- 0
Hi,
I have a permanent magnet (actually, an assembly of permanent magnets). I can calculate magnetic flux density induced by the magnets (when no other objects presents).
Now, I have very small iron particles suspend in water inside a cup. The magnets are then placed on the outside wall of the cup. The iron particles start to move toward the magnets. Ultimately, I would like to calculate the time needed for the particles to reach the cup wall. For the first step, how can I calculate the "pull force" on the iron particles induced by the magnets? Of course, the pull force increases as the iron particles move closer to the magnet. Is there any simplified equation for this?
Thanks!
phsieh2005
I have a permanent magnet (actually, an assembly of permanent magnets). I can calculate magnetic flux density induced by the magnets (when no other objects presents).
Now, I have very small iron particles suspend in water inside a cup. The magnets are then placed on the outside wall of the cup. The iron particles start to move toward the magnets. Ultimately, I would like to calculate the time needed for the particles to reach the cup wall. For the first step, how can I calculate the "pull force" on the iron particles induced by the magnets? Of course, the pull force increases as the iron particles move closer to the magnet. Is there any simplified equation for this?
Thanks!
phsieh2005