Anisotropic Characteristics of Turbulence Dissipation in Swirling Flow: A Direct Numerical Simulation Study

Table 1

Typical real values of variables used in the numerical simulation.

Scales of the flow domain (mm)	20 * 10 * 10
Scale of jet diameter (mm)	1.0
Grids number	512 * 256 * 256
Scale of resolution (m)	39
Mean inlet axial velocity (m/s)	71.71
Fluid density (kg/m^3)	1.29
Fluid viscosity (Pa⋅s)	1.85 * 10^−5
Inflow momentum thickness (/d)	1/20
Reynolds number Re	5000
Swirl number S	Case 1: 0.28;
	Case 2: 0.45;
	Case 3: 0.59;
Time step	0.001
Number of simulation step	20000