Theoretical and computational modeling of clustering effect on effective thermal conductivity of cement composites filled with natural hemp fibers

摘要: This paper investigates the effects of clustering on effective transverse thermal conductivity unidirectional cement composites filled with natural hemp fibers. A typical pattern four fibers embedded into matrix is designed as representative two-dimensional unit cell, which taken from periodic composite under consideration, and a degree parameter introduced to adjust distance between clustered For this heterogeneous two-component model, distributions heat flux component are obtained using finite element simulation for various cases involving different global fiber volume concentrations, parameters, both matrix, evaluate composite. To further reveal caused by fibers, random cluster in cell considered comparison present regular clus...