Robustness of the Mean Flow Similarity in an Urban Roughness Sublayer to Different Inflow Properties
Robustness of the Mean Flow Similarity in an Urban Roughness Sublayer to Different Inflow Properties
复制标题
城市粗糙度子层中平均流量相似性对不同流入属性的鲁棒性
DOI:
10.1007/s10546-022-00764-z
复制
发表时间:
2023
影响因子:
4.3
通讯作者:
Yasuaki Mori
中科院分区:
文献类型:
--
作者:
Atsushi Inagaki;Ryo Inoue;Manabu Kanda;Yasuaki Mori
This study uses a numerical simulation to examine the local mean flow similarity within an urban roughness sublayer (RSL). The simulations are conducted using a realistic building geometry for the central area of Tokyo under three different inflow conditions. The inflow properties are controlled by changing the surface geometries in the upwind direction, which results in various ratios of boundary-layer height to roughness height in the target region. The local mean wind velocities within the RSL, which vary significantly in space, are proportional to each other in all simulations, regardless of the inflow conditions. The velocity within the RSL is represented by the friction velocity, which is estimated from the Reynolds stress profile in the inertial sublayer. The behaviour of the wake turbulence behind isolated high-rise buildings differs considerably among the inflow conditions. Velocity persists for long distances downstream in cases with a low boundary- layer height relative to an isolated building, whereas it diffuses rapidly in cases with a higher boundary-layer height. This effect can propagate into the RSL and modify the mean flow similarity within the sublayer.
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DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
P. Alfredsson;R. Örlü
通讯作者:
R. Örlü
影响因子:
3.7
作者:
A. Inagaki;M. Kanda
通讯作者:
M. Kanda
影响因子:
3.7
作者:
RAUPACH, MR
通讯作者:
RAUPACH, MR
影响因子:
4.3
作者:
Ayako Yagi;A. Inagaki;M. Kanda;C. Fujiwara;Y. Fujiyoshi
通讯作者:
Y. Fujiyoshi
影响因子:
4.3
作者:
Watanabe Tsutomu;Takagi Marie;Shimoyama Kou;Kawashima Masayuki;Onodera Naoyuki;Inagaki Atsushi
通讯作者:
Inagaki Atsushi