The three-dimensional turbulent boundary layer flow around bridge piers
作者:
Ferdous Ahmed,
Nallamuthu Rajaratnam,
期刊:
Journal of Hydraulic Research
(Taylor Available online 1997)
卷期:
Volume 35,
issue 2
页码: 209-224
ISSN:0022-1686
年代: 1997
DOI:10.1080/00221689709498427
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
The three-dimensional skewed flow around circular cylinders placed on smooth, rough rigid and rough mobile (with scour hole) beds was analyzed in terms of the theories of the three-dimensional turbulent boundary layer (3DTBL). Performance of various cross-flow and near-wall similarity models was evaluated and the effects of roughness and scour hole were discerned. Perry and Joubert's model gave best results among cross-flow models. All near-wall models gave nearly identical results because of the small cross-flow but none gave good results. However, some indications of the near-wall similarity were found. The polar plots were found to be helpful in interpreting the cross-flow behavior, especially the effects of roughness and scour hole on it.
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