LES of heat transfer in a channel with a staggered pin matrix

Flow and heat transfer through a matrix of 8 x 8 cylindrical adiabatic rods in a staggered arrangement and connecting two non-isothermal walls of a plane channel have been studied with LES using an in-house unstructured ¯nite-volume computational code. The results for the mean °ow properties agree well with the experimental data of Ames et al. [1]. The instantaneous velocity and temperature ¯elds, vortical structures and their wall-signatures, unsteadiness and three-dimensionality - none of which is accessible to exper- iments, have been analyzed to gain a better insight into the °ow dynamics and its e®ects on the local and averaged heat transfer.