CFD Modeling of Solid Suspension in a Stirred Tank: Effect of Drag Models and Turbulent Dispersion on Cloud Height

Table 1

Grid dependency study for the single-impeller tank. (A) 10% (w/w) solids loading and 300 RPM, (B) 15% (w/w) solids loading and 250 RPM.

Test case		Baseline	Refined mesh	Difference (%)
Case A	Normalized Cloud Height (𝐻𝑐/𝐻)	0.655	0.644	1.68
	Power Number	1.762	1.760	0.11
Case B	Normalized Cloud Height (𝐻𝑐/𝐻)	0.492	0.501	1.83
	Power Number	1.837	1.767	3.80