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. 2020 Nov 25;6(11):e05568. doi: 10.1016/j.heliyon.2020.e05568

Table 2.

Grid independency test at $R a$ = 10⁶, $ϕ$ = 0.1.

Model	Grids
	$21 \times 21$		$31 \times 31$		$41 \times 41$		$51 \times 51$
	$N u_{m}$	$ψ_{m a x}, ψ_{m i n}$	$N u_{m}$	$ψ_{m a x}, ψ_{m i n}$	$N u_{m}$	$ψ_{m a x}, ψ_{m i n}$	$N u_{m}$	$ψ_{m a x}, ψ_{m i n}$
1	5.202	$0.883,$ $- 20.54$	5.504	$0.933,$ $- 22.66$	5.604	$0.991,$ $- 23.71$	5.604	$0.990,$ $- 23.72$
2	5.207	$0.01,$ $- 23.44$	5.400	$0.002,$ $- 25.88$	5.527	$0,$ $- 26.21$	5.527	$0,$ $- 26.20$
3	5.098	$0.02,$ $- 26.01$	5.175	$0.001,$ $- 27.23$	5.200	$0,$ $- 28.19$	5.200	$0,$ $- 28.21$
4	4.977	$0.01,$ $- 21.11$	5.149	$0.004,$ $- 26.21$	5.271	$0,$ $- 25.77$	5.271	$0,$ $- 25.76$
5	5.276	$0.02,$ $- 25.32$	6.034	$0.01,$ $- 29.01$	6.154	$0,$ $- 30.15$	6.154	$0,$ $- 30.14$
6	5.254	$0.01,$ $- 23.08$	6.006	$0.01,$ $- 24.55$	6.177	$0,$ $- 26.61$	6.177	$0,$ $- 26.62$
7	7.165	$0.01,$ $- 31.13$	6.472	$0.01,$ $- 29.14$	6.105	$0,$ $- 28.10$	6.105	$0,$ $- 28.11$
8	6.987	$0.01,$ $- 30.31$	6.353	$0.01,$ $- 26.77$	6.163	$0,$ $- 25.12$	6.163	$0,$ $- 25.11$