Skin-friction measurements in a turbulent boundary layer under the influence of free-stream turbulence
Skin-friction measurements in a turbulent boundary layer under the influence of free-stream turbulence
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自由流湍流影响下湍流边界层的表面摩擦测量
DOI:
10.1007/s00348-017-2397-8
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发表时间:
2017
影响因子:
2.4
通讯作者:
Esteban L
中科院分区:
文献类型:
--
作者:
Esteban L
This experimental investigation deals with the influence of free-stream turbulence (FST) produced by an active grid on the skin friction of a zero-pressure-gradient turbulent boundary layer. Wall shear stress is obtained by oil-film interferometry. In addition, hot-wire anemometry was performed to obtain wall-normal profiles of streamwise velocity. This enables the skin friction to be deduced from the mean profile. Both methods show remarkable agreement for every test case. Although skin friction is shown to increase with FST, the trend with Reynolds number is found to be similar to cases without FST. Furthermore, once the change in the friction velocity is accounted for, the self-similarity of the logarithmic region and below (i.e. law of the wall) appears to hold for all FST cases investigated.
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影响因子:
3.7
作者:
P. Hancock;P. Bradshaw
通讯作者:
P. Bradshaw
DOI:
10.1088/0022-3735/9/12/028
发表时间:
1976
期刊:
Journal of Physics E: Scientific Instruments
影响因子:
--
作者:
L. Tanner;V. G. Kulkarni
通讯作者:
V. G. Kulkarni
影响因子:
3.7
作者:
E. Doğan;R. Hanson;B. Ganapathisubramani
通讯作者:
E. Doğan;R. Hanson;B. Ganapathisubramani
影响因子:
2.4
作者:
K. Chauhan;H. Ng;I. Marusic
通讯作者:
I. Marusic
DOI:
--
发表时间:
2017
期刊:
影响因子:
--
作者:
E. Rodríguez;P. Bruce;O. Buxton
通讯作者:
O. Buxton