A theoretical study is conducted on the problem of two-dimensional steady-state heat
transfer of composites with cylindrically orthotropic fiber with surface effect
containing isotropic core. By introducing an appropriate coordinate transformation to
convert the governing differential equation into a harmonic one, an analytical solution
to the heat flux fields of the cylindrically orthotropic nanofiber reinforced
composites is derived based on the surface theory model. Numerical examples
provide a better understanding of interesting interaction effects of composite
microstructures (geometric and physical parameters of the fiber and core) in heat flux
distribution. The radial and circumferential heat flux distributions in the
nanocomposites are investigated. The effects of size of the fiber, thermal
conductivity of the core and radius of the core on the heat flux distribution are
discussed.