earticle

영어

An improved      model for Newtonian fluids has been extended to predict polymer-induced drag reduction FENE-P fluids. The conformation tensor equation which is related to the polymer stress is adopted from the model form of Resende et al., and the models of redistribution and dissipation rate terms for the scalar   transport equation are considered by the elliptic blending equation. Also, the new model terms for viscoelastic stress work in the turbulent kinetic energy equation and the scalar   transport equation are introduced to consider the polymer additives effect. The prediction results are directly compared to the DNS data to assess the performance of the present model predictions.