Jingfa Li1, Bo Yu1,*, Qianqian Shao2, Dongliang Sun1
CMES-Computer Modeling in Engineering & Sciences, Vol.125, No.2, pp. 541-563, 2020, DOI:10.32604/cmes.2020.011835
Abstract In this work, the drag-reducing mechanism of high-Reynoldsnumber turbulent channel flow with surfactant additives is investigated by
using large eddy simulation (LES) method. An N-parallel finitely extensible
nonlinear elastic model with Peterlin’s approximation (FENE-P) is used to
describe the rheological behaviors of non-Newtonian fluid with surfactant.
To close the filtered LES equations, a hybrid subgrid scale (SGS) model
coupling the spatial filter and temporal filter is applied to compute the subgrid
stress and other subfilter terms. The finite difference method and projection
algorithm are adopted to solve the LES governing equations. To validate
the correctness of our LES method and… More >
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