Researchers develop computer model of ferrofluid motion

phys.org | 7/11/2017 | Staff
shuadah (Posted by) Level 3
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Ferrofluids, with their mesmeric display of shape-shifting spikes, are a favorite exhibit in science shows. These eye-catching examples of magnetic fields in action could become even more dramatic through computational work that captures their motion.

A KAUST research team has now developed a computer model of ferrofluid motion that could be used to design even grander ferrofluid displays. The work is a stepping stone to using simulation to inform the use of ferrofluids in broad range of practical applications, such as medicine, acoustics, radar-absorbing materials and nanoelectronics.

Ferrofluids - NASA - 1960s - Way - Fuels

Ferrofluids were developed by NASA in the 1960s as a way to pump fuels in low gravity. They comprise nanoscale magnetic particles of iron-laden compounds suspended in a liquid. In the absence of a magnetic field, ferrofluids possess a perfectly smooth surface. But when a magnet is brought close to the ferrofluid, the particles rapidly align with the magnetic field, forming the characteristic spiky appearance. If a magnetic object is placed in the ferrofluid, the spikes will even climb the object before cascading back down.

Because ferrofluid behavior can be counter-intuitive, simulation is the ideal way to understand their complex motion. (Watch the simulation here.) Until now, however, the models have had several limitations, says Libo Huang, a Ph.D. student in Dominik Michels's Computational Sciences Group within KAUST'sVisual Computing Center.

Challenge - Singularities

The first challenge was to eliminate singularities...
(Excerpt) Read more at: phys.org
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