Table 2. Results of Grid Independence Test.

no.	grid number	pressure drop (Pa)	relative error	gas holdup	relative error
grid #1	13,690	2235.15	2.7%	0.064	9%
grid #2	30,225	2174.41	2.1%	0.058	–3%
grid #3	44,520	2128.03	1.4%	0.060	16%
grid #4	84,700	2097.12	0.5%	0.050	3%
grid #5	145,040	2087.33		0.048