동심 환형관 내의 난류유동의 직접수치모사DNS of Turbulent Concentric Annular Pipe Flow

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Direct numerical simulations (DNS) is carried out to study fully-developed turbulent concentric annular pipe flow with two radius ratios at $Re_{Dh}\;=\;8900$. In case of $R_1/R_2\;=\;0.5$, the present result for the mean flow is in good agreement with the previous experimental data. Because of the transverse curvature effects, the distributions of mean flow and turbulent intensities are asymmetric in contrast to those of other fully-developed flows (channel and pipe flow). From the distributions of skewness of radial velocity fluctuations, it co be identified that all of the characteristics of channel, pipe and turbulent flow on a cylinder in axial flow can be appeared in concentric annular pipe flow.
Publisher
대한기계학회
Issue Date
2000
Language
KOR
Citation

대한기계학회 춘추학술대회, v.2, no.2, pp.461 - 466

URI
http://hdl.handle.net/10203/137280
Appears in Collection
ME-Conference Papers(학술회의논문)
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