Category: Transient Plane Source
Keywords: 3D4D composites, anisotropic, anisotropic testing, Boltzmann model, braided composites, heterogeneous materials, Thermal Conductivity, thermal contact resistance, Verify predictions of Boltzmann model of thermal conductivity of anisotropic 3D4D braided composites
Abstract: The authors present a multiple-relaxation-time lattice Boltzmann model with an off-diagonal collision matrix for use in predicting the thermal conductivity of anisotropic heterogeneous materials with anisotropic components. Model accuracy was first confirmed through comparison with previous simulation results. In this paper the model was applied to measure the tranverse and longitudinal thermal conductivities of 3D4D braided composites. The Hot Disk TPS method was used to measure the conductivities experimentally for comparison with the simulated results. Once those had been obtained, the project was expanded to study the effect of fiber volume fractions, interior braiding angles and interface thermal contact resistance on the thermal conductivity.
Reference: International Journal of Heat and Mass Transfer, 92, (January 2016), pp.120-130