Optimization Simulation of Ultrafine Dry Powder Blow-Assisted Pipe Based on CFD

Table 1

Properties of superfine dry powder particle.

Properties	Parameter settings
Density (kg/m3)	1760
Diameter (m)	1.87×10–5
Granular viscosity (kg/m·s)	Gidaspow
Granular bulk viscosity (kg/m·s)	Lun et al.
Solids pressure (Pa)	Lun et al.
Granular temperature (m2/s2)	Algebraic
Fraction viscosity (kg/m·s)	Schaeffer
Frictional pressure (Pa)	KTGF-based
Friction packing limit	0.61
Angel of internal friction (deg)	30
Packing limit	0.63
Radial distribution	Lun et al.