The purpose of this study was to establish a numerical model f
or calorimetric measurements of magnetic fluids under an alt
ernating
magnetic field (AMF). The modified linear response theory (LR
T) and Stoner-Wohlfarth theory were applied to investigate
heat dissipation
from the ferrofluid. The hysteresis area was calculated once
the magnetic field value, applied frequency and number weigh
ted distribution
of the nanoparticles were known. Magnetic field distributio
n was calculated for the setup used for performing calorimet
ric experiments,
and field dependent relaxation times were employed to calcul
ate the specific loss power (SLP) in the sample. Subsequently
, the results of
numerical investigation were compared with the measuremen
ts obtained from calorimetric experiments. The Zeeman ener
gy condition was
used to delimit the area where LRT is valid. The numerical mod
el calibrated with the calorimetric measurements allowed f
or the diffusion
coefficient and the parameters involved in power dissipation
in a ferrofluid to be determined. These parameters were then u
sed to compute
total heat dissipation and temperature distribution withi
n the sample. The numerical model matching the calorimetric
measurements of heat
dissipation from ferrofluids enhanced the reliability of si
mulations.