Proposal of Damping Function for Low-Reynolds-Number 𝑘-𝜀 Model Applicable in Prediction of Turbulent Viscoelastic-Fluid Flow

Table 1

Percentage drag reduction DR%.

Reynolds number Re𝜏	150	150	150	150	150	395	395
Weissenberg number Wi𝜏	10	11	30	30	40	11	30
Shear-viscosity ratio 𝛽	0.8	0.5	0.5	0.3	0.5	0.5	0.5
Present model	15%	1%	57%	63%	68%	4%	60%
DNS [18]	13%	23%	58%	64%	67%	27%	58%