  We theoretically investigate the phase-dependent heat transport of a
temperature-biased granular Josephson junction in the presence of a
perpendicular magnetic field. We illustrate the influence of geometry of the
junction on the thermal current. The use of granular Josephson junction rather
than bulk one makes significant changes in the heat current behavior. The heat
current diffraction pattern of the rectangular, circular and annular geometries
with no trapped fluxons demonstrates similar to the current of s-wave
superconducting junction. By increasing the number of trapped fluxon, the
pattern of current behaves such as d-wave superconducting junction. The
feasibility of using granular superconductors, with different geometries,
controlled by the magnetic field provides an appropriate tool to obtain the
desired result for a specific application.
