Comparison of the Finite Volume and Lattice Boltzmann Methods for Solving Natural Convection Heat Transfer Problems inside Cavities and Enclosures

Table 5

Number of iterations and solving time for different discretization method.

Type of method	Case number	Discretization method/pressure-velocity linking approach	Number of iterations	Solving time (s)
Finite volume method	1	1st upwind/SIMPLE	1571	482
	2	1st upwind/SIMPLEC	1572	486
	3	2nd upwind/SIMPLE	1597	502
	4	2nd upwind/SIMPLEC	1598	509
	5	Power law/SIMPLE	1520	469
	6	Power law/SIMPLEC	1521	474
	7	QUICK/SIMPLE	1598	510
	8	QUICK/SIMPLEC	1599	519
Lattice Boltzmann method	1	Well-known finite difference method	47507	3360