Water mist flow in a superconducting magnet inclined at various angles

Water mist ( diamagnetic) flow in a superconducting magnet of 10 T at various angles is studied experimentally and numerically. Water mist is produced by ultrasonic atomizers and fed into a cylindrical Plexiglas pipe ( inner diameter, 90 mm) placed in a bore space of an inclined superconducting magnet. The water mist is found to stop at some locations in the magnet at inclined angles psi <= pi/6. At psi >= pi/4, the amount of mist flowing out of the other opening of the pipe increases with an increase in inclined angle. In the computation of this phenomenon, water mist is simulated with 1000 water droplets of 3 mu m diameter. Brownian motion is considered and the Langevin equation is solved. The numerical results show that at psi <= pi/6, most of the water droplets accumulate above the magnetic coil. However, at psi >= pi/4, with an increase in inclined angle, the number of water droplets passing through the magnetic coil increases.