11:30 AM - 11:45 AM
[AOS12-10] Numerial simulation of tidally induced internal heat generation using SPH and its application for internal ocean formation
Keywords:Titan , Internal ocean, SPH
It is considered that the tidal heating caused by tidal acceleration melt inner icy layer resulting the presence of liquid water beneath its surface. In order to account the presence of liquid water, we need to understand the distribution of inner energy and consequently liquid water. This requires carrying out fluid numerical calculation adding tidal heating. Therefore, we introduced viscous term being proportional to pressure to SPH (Smoothed Particle Hydrodynamics) simulations.
At the first step to check the effect of the viscous term, we performed SPH simulations of the tidal heating in the case that tidal deformation is relatively large. We rotated differentiated Titan-size object around Saturn-mass material point with the orbital radius being 1.1 times of its Roche limit. As a result, we found that the thermal energy increased in the inner region of icy layer. It should also be noted that, using the current numerical resolution it is too coarse to represent theoretical thickness of internal ocean.