Direct numerical simulations of turbulent channel flow over ratchet roughness
Direct numerical simulations of turbulent channel flow over ratchet roughness
复制标题
棘轮粗糙度下湍流通道流动的直接数值模拟
DOI:
10.1007/s10494-022-00352-8
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发表时间:
2022
期刊:
影响因子:
--
通讯作者:
Busse A
中科院分区:
文献类型:
--
作者:
Busse A
The influence of the orientation of ratchet-type rough surfaces on their fluid dynamic roughness effect is investigated using direct numerical simulations of turbulent channel flow at. The ratchet length-to-height ratio is varied fromto 16 for a fixed ratchet height ofwhereis the mean channel half-height. The results show that both roughness function and mean flow and turbulence statistics strongly depend on the ratchet orientation. Existing empirical formulae, which estimate the roughness functionor the equivalent sand-grain roughnessbased on surface-slope related parameters such as the effective slope or the Sigal-Danberg parameter, fail to accurately predict the differences between ratchet surfaces with high windward slopes and ratchet surfaces with high leeward slopes.
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影响因子:
2.8
作者:
Busse A
通讯作者:
Busse A
影响因子:
3.7
作者:
M. Thakkar;Angela Busse;N. Sandham
通讯作者:
M. Thakkar;Angela Busse;N. Sandham
DOI:
10.1016/j.ijheatfluidflow.2019.108485
发表时间:
2019-10
影响因子:
2.6
作者:
T. Jelly;A. Busse
通讯作者:
T. Jelly;A. Busse
影响因子:
3.7
作者:
P. Forooghi;A. Stroh;P. Schlatter;B. Frohnapfel
通讯作者:
B. Frohnapfel
影响因子:
2.7
作者:
S. Sarakinos;A. Busse
通讯作者:
S. Sarakinos;A. Busse