Power spectrum of high Schmidt number scalar in a turbulent jet at a moderate Reynolds number
Power spectrum of high Schmidt number scalar in a turbulent jet at a moderate Reynolds number
复制标题
中等雷诺数湍流射流中高施密特数标量的功率谱
DOI:
10.1007/s00348-021-03216-5
复制
发表时间:
2021
影响因子:
2.4
通讯作者:
Yasumasa Ito
中科院分区:
文献类型:
--
作者:
Koji Iwano;Jumpei Hosoi;Yasuhiko Sakai;Yasumasa Ito
The power spectrum of concentration fluctuation of high Schmidt number dye () was measured in a liquid-phase axisymmetric turbulent jet at the jet Reynolds number of. We used the optical fiber LIF probe which has a spatial resolution of 2.8m and a working distance of 140m. It is confirmed that the probe can achieve high signal-to-noise ratio by using high concentration dye, which enabled us to examine the spectral shape almost up to the Batchelor scale for the present experimental condition. The measured power spectrum captures the transition from the inertial–convective range to the viscous–convective range at around(: Kolmogorov scale). Thescaling law for the power spectrum almost holds in the viscous–convective range. However, the spectrum does not perfectly follow thescaling but has a small bump in the range. It is also shown that the small-scale concentration fluctuation largely contributes to the r.m.s value of concentration fluctuation.Graphic abstract
登录
查看更多内容
DOI:
--
发表时间:
2017
期刊:
--
影响因子:
--
作者:
M. Clay
通讯作者:
M. Clay
影响因子:
3.7
作者:
T. Lavertu;L. Mydlarski;S. Gaskin
通讯作者:
S. Gaskin
DOI:
10.2514/3.6001
发表时间:
1968
期刊:
影响因子:
--
作者:
C. Gibson;I. Hirschsohn;R. Lyon
通讯作者:
R. Lyon
影响因子:
3.7
作者:
P. Miller;P. Dimotakis
通讯作者:
P. Dimotakis