2:45 PM - 3:00 PM
[SIT07-17] Numerical simulations on the upwelling plumes in the mantle of super-Earths in 2-D axisymmetric geometry
Keywords:super-Earths, mantle convection, internal heating
In the first series of our simulations, we obtained the results similar to earlier ones, such as the increase in the heat flow at the top and bottom boundaries in proportion to Ra1⁄3, demonstrating the validity of the numerical simulation in this study. Furthermore, the second series of our study of the mantle of super-Earths showed that (1) temperature-dependence of viscosity tends to reduce plume heat transport, and (2) the variation of compressibility does not affect the detail of the loss of plume heat flux during their ascent. We also found that heat can flow downward into the core when the chondritic rate of internal heating is present in the mantle of super-Earths, demonstrating significant effects of the internal heating rate on the convection and thermal state in the mantle of super-Earths.