Spatial-scaling method and modified large eddy simulation to examine rough-wall turbulence
Spatial-scaling method and modified large eddy simulation to examine rough-wall turbulence
复制标题
空间尺度方法和改进的大涡模拟来检查粗糙壁湍流
DOI:
10.1080/14685248.2021.1915494
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发表时间:
2021
影响因子:
1.9
通讯作者:
Nakatsuji Keisuke
中科院分区:
文献类型:
--
作者:
Ohta Takashi;Nakatsuji Keisuke
Direct numerical simulations of turbulent boundary layers with roughness elements on a wall were performed to investigate the spatial characteristics of rough-wall turbulence and establish a corresponding prediction method. When the roughness height was larger than the buffer layer, the rough-wall turbulence exhibited different spatial characteristics of the turbulence structures from those pertaining to a smooth wall. A novel spatial scaling method was established to examine the universal spatial characteristics of turbulence structures in the presence and absence of wall roughness. Specifically, the viscous length was determined by modifying the definition of the friction velocity in the region in which the roughness influenced the flow. The rough-wall turbulence could be accurately predicted by performing large eddy simulations using the subgrid scale model with the filter width, which was modified using the proposed spatial scaling method. The proposed model can be used to design more efficient fluid machinery in engineering applications.
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影响因子:
4.1
作者:
A. Tamura;K. Kikuchi;Tadayasu Takahashi
通讯作者:
Tadayasu Takahashi
DOI:
10.1016/j.compfluid.2019.104314
发表时间:
2019
期刊:
Computer and Fluids
影响因子:
--
作者:
T. Watanabe;X. Zhang;K. Nagata
通讯作者:
K. Nagata
影响因子:
3.7
作者:
A. Busse;N. Sandham
通讯作者:
A. Busse;N. Sandham
DOI:
10.1299/jsmeb.43.233
发表时间:
2000
期刊:
Jsme International Journal Series B-fluids and Thermal Engineering
影响因子:
--
作者:
Y. Miyake;K. Tsujimoto;Yasuaki Agata
通讯作者:
Yasuaki Agata
DOI:
10.1299/jsmeb.41.830
发表时间:
1998
期刊:
Jsme International Journal Series B-fluids and Thermal Engineering
影响因子:
--
作者:
T. Kajishima;T. Ohta;K. Okazaki;Y. Miyake
通讯作者:
Y. Miyake