  Near-field radiative heat transfer (NFRHT) has received growing attention
because of its high intensity far beyond the Planck's black-body limit.
Insertion of a third object in proximity of the two articles can significantly
influence and manipulate its NFRHT. However, for the system composed of many
particles, the effect of many-body interaction (MBI) on NFRHT between arbitrary
two particles is still not well understood. In this work, the MBI is studied
for two particles with three typical proximate ensembles: particle chain, plane
and grating. With the increasing of proximate particle size, the MBI on NFRHT
will experience a radical change from inhibition to enhancement. The
polarizability of the proximate particle increases with particle radius, which
enhances the interaction between the proximate particles and the main particle,
and then results in enhancement of NFRHT between the main particles. When
twisting the proximate particle ensemble, the proximate MBI accounts for a
smooth and non-oscillated twisting angle dependence of NFRHT, different from
the oscillation phenomenon of NFRHT for particle gratings. This work deepens
the understanding of NFRHT in dense particulate systems.
