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Updated: Mar 15, 2026

Characterization of Thermal Transport in One-dimensional Solid Materials
Published on: January 26, 2014
Conjugate heat transfer with the entropic lattice Boltzmann method
G Pareschi1, N Frapolli1, S S Chikatamarla1
1Department of Mechanical and Process Engineering, ETH Zurich, 8092 Zurich, Switzerland.
Abstract:
A conjugate heat-transfer model is presented based on the two-population entropic lattice Boltzmann method. The present approach relies on the extension of Grad's boundary conditions to the two-population model for thermal flows, as well as on the appropriate exact conjugate heat-transfer condition imposed at the fluid-solid interface. The simplicity and efficiency of the lattice Boltzmann method (LBM), and in particular of the entropic multirelaxation LBM, are retained in the present approach, thus enabling simulations of turbulent high Reynolds number flows and complex wall boundaries. The model is validated by means of two-dimensional parametric studies of various setups, including pure solid conduction, conjugate heat transfer with a backward-facing step flow, and conjugate heat transfer with the flow past a circular heated cylinder. Further validations are performed in three dimensions for the case of a turbulent flow around a heated mounted cube.
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