Proceedings of the KSME Conference (대한기계학회:학술대회논문집)
- 2002.08a
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- Pages.475-478
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- 2002
Maximum drag reduction in turbulent channel flow by polymer additives
난류 채널 유동에서 폴리머 첨가제에 의한 최대 항력감소
- Published : 2002.08.01
Abstract
Maximum drag reduction (MDR) in turbulent channel flow by polymer additives is studied by direct numerical simulation. An Oldroyd-B model is adopted to express the polymer stress because it is believed that MDR is closely related to the elasticity of the polymeric liquids. The Reynolds number based on the bulk velocity and the channel height is 40000. MDR in the present study is