Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A 3D BEM algorithm for simulations of magnetic fluid droplet dynamics   This paper outlines a numerical algorithm that could be used for simulating
full 3D dynamics of magnetic fluid droplet shapes in external magnetic fields,
by solving boundary integral equations. The algorithm works with arbitrary
droplet and carrier fluid viscosity ratios. It is validated with known
theoretical relationships. Thus it may be used to evaluate various
approximations often used in description of ellipsoidal droplets by comparing
droplet dynamics calculated from them to the results obtained numerically from
first principles here. The algorithm may be used for investigations of droplet
configurations in arbitrary magnetic fields, as well as for indirectly
calculating its physical properties and predicting the magnetic field
thresholds above which droplet shape can develop instabilities in the form of
various spikes.

14
The categories of this paper are: math-ph
36
The categories of this paper are: cmp-lg
35
The categories of this paper are: mtrl-th
12
The categories of this paper are: nucl-th
18
The categories of this paper are: econ
10
The categories of this paper are: q-bio
30
The categories of this paper are: q-alg
27
The categories of this paper are: comp-gas
22
The categories of this paper are: chao-dyn
29
The categories of this paper are: funct-an
9
The categories of this paper are: nlin
1
The categories of this paper are: cs
17
The categories of this paper are: q-fin
16
The categories of this paper are: stat
25
The categories of this paper are: patt-sol
0
The categories of this paper are: hep-ph