Lattice Boltzmann method for conjugate heat and mass transfer with interfacial jump conditions

Abstract

2016-11-02T18:49:00

A lattice Boltzmann model for heat transfer in heterogeneous media

“…There is no obvious difference between them. The continuity of temperature and of temperature gradient across the interface of solid media can be guaranteed exactly in the present numerical prediction, which is important for conjugate heat transfer simulation [17][18][19][20][21]. Furthermore, in the models proposed in Refs.…”

“…Moreover, the present model can be directly used for conjugate heat transfer simulation, without any modification. Compared with some of the available LB approaches for conjugate heat transfer simulation [17][18][19][20], the present model is easier to be implemented as here no interface should be treated explicitly. Although the complexity induced by interface treatment can be avoided in several previous LB models [21,22], they suffer a number of obvious shortcomings.…”

“…Furthermore, in the models proposed in Refs. [17][18][19][20][21], the thermophysical properties of each solid material layer should be assumed spatially identical, but such assumption may not meet the requirements of real situations. In the present model, such restriction does not exist and the thermophysical properties of each solid material layer can vary arbitrarily.…”

“…combustion), these two assumptions can hardly be met. Recently, some scholars discussed how to model conjugate heat transfer by the LB method [17][18][19][20][21][22]. For conjugate heat transfer, the investigated domain is consisted of several different medium layers, and the specific heat capacity and/or thermal conductivity of the medium layers may be different with each other.…”

A transient heat transfer model for high temperature solar thermochemical reactors

“…where ΔT is a reference temperature introduced to normalize the physical temperature, i.e., and Γ t should be adjusted to constrain η D in a reasonable range, e.g, 0.501 < η D < 2.0 [31][32][33][34][35][36]. Two numerical tests will be presented in the beginning of Section 5 to validate the scaling strategy in the LB modeling.…”