Dynamic Drag Reduction Effects of Aerospikes and Aerodisks

Table 4

Comparison of drag coefficients between numerical simulation and experiment.

Case number	First-layer grid height/mm	Turbulent model	Far-field mesh	Surface mesh	Numerical drag coefficient	Deviation with experiment
Exp.					1.462
1	0.03	SST	Moderate	Moderate	1.5266	4.42%
2	0.03	SA	Moderate	Moderate	1.5264	4.40%
3	0.003	SST	Moderate	Moderate	1.5163	3.71%
4	0.003	SA	Moderate	Moderate	1.5159	3.69%
5	0.0003	SST	Moderate	Moderate	1.5030	2.80%
6	0.0003	SA	Moderate	Moderate	1.5012	2.68%
7	0.003	SA	Coarse	Moderate	1.5204	3.99%
8	0.003	SA	Refined	Moderate	1.5154	3.65%
9	0.003	SA	Moderate	Coarse	1.5279	4.51%
10	0.003	SA	Moderate	Refined	1.5144	3.58%