  The rotational velocity curve (RC) of galaxy NGC 3198 is modelled in various
theoretical frameworks: Thermodynamic Gravity (TG) is compared to Dark Matter
(DM) and Modified Newtonian Dynamics (MOND). The nonlinear gravitational field
equation of TG is solved using the baryonic mass density as the source of the
gravitational field. In this paper, first a dissipation motivated numerical
method is verified with the help of exact solutions. Then, the obtained optimal
velocity curve is compared to pseudo-isothermal DM and MOND parametrisations
for the RC of the galaxy.
