Arash Karimipour and A. Hossein Nezhad and E. Shirani and A. Safaei
Simulation of Fluid Flow and Heat Transfer in Inclined Cavity using Lattice Boltzmann Method
840 - 847
2011
5
4
International Journal of Mechanical and Mechatronics Engineering
https://publications.waset.org/pdf/2506
https://publications.waset.org/vol/52
World Academy of Science, Engineering and Technology
In this paper, Lattice Boltzmann Method (LBM) is used to study laminar flow with mixed convection heat transfer inside a twodimensional inclined liddriven rectangular cavity with aspect ratio AR 3. Bottom wall of the cavity is maintained at lower temperature than the top lid, and its vertical walls are assumed insulated. Top lid motion results in fluid motion inside the cavity. Inclination of the cavity causes horizontal and vertical components of velocity to be affected by buoyancy force. To include this effect, calculation procedure of macroscopic properties by LBM is changed and collision term of Boltzmann equation is modified. A computer program is developed to simulate this problem using BGK model of lattice Boltzmann method. The effects of the variations of Richardson number and inclination angle on the thermal and flow behavior of the fluid inside the cavity are investigated. The results are presented as velocity and temperature profiles, stream function contours and isotherms. It is concluded that LBM has good potential to simulate mixed convection heat transfer problems.
Open Science Index 52, 2011