Table 2.

Mesh independency results based on the bitumen conversion.

Item	Number of grids	Conversion of residue %	Relative error with previous item %
1	23,574	13.07
2	26,598	16.27	24.5
3	27,580	17.65	8.5
4	29,979	18.58	5.3
5	34,758	18.87	1.6
6	42,795	18.98	0.58
7	46,987	19.05	0.37