Abstract
A thermal lattice Boltzmann model in a body-fitted coordinate system has been proposed by combining the thermal lattice Boltzmann model on uniform grids with the generalized form of interpolation-supplemented lattice Boltzmann method (GILBM), and then it is validated by numerically simulating flow and heat transfer problems in domains with irregular geometry. The flow around a circular cylinder has been investigated under different Reynolds numbers. Both pressure coefficients and Nusselt numbers around cylindrical surface are in good agreement with previous numerical and experimental results. The natural convection in horizontal concentric and eccentric cylindrical annuluses has also been studied, respectively. It is found out that equivalent heat conductivity increases gradually as Rayleigh number. What's more, the equivalent heat conductivities on the inner and outer cylindrical surfaces are consistent with the experimental results with acceptable deviations. These comparisons show that the proposed thermal lattice Boltzmann model is feasible and reliable to simulate fluid flow and heat transfer problems in domains with irregular geometry.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
