An Experimental and Numerical Investigation on the Effects of Aerothermal Mixing in a Confined Oblique Jet Impingement Configuration
An Experimental and Numerical Investigation on the Effects of Aerothermal Mixing in a Confined Oblique Jet Impingement Configuration
复制标题
有限斜射流冲击结构中空气热混合效应的实验和数值研究
DOI:
10.1115/1.4032022
复制
发表时间:
2016
影响因子:
1.7
通讯作者:
J. von Wolfersdorf
中科院分区:
文献类型:
--
作者:
S. Schulz;A. Schindler;J. von Wolfersdorf
An investigation to characterize the effect of entrainment in a confined jet impingement arrangement is presented. The investigated configuration shows an impingement-cooled turbine blade passage and holds two staggered rows of inclined impingement jets. In order to distinctly promote thermal entrainment phenomena, the jets were heated separately. A steady-state liquid crystal technique was used to obtain near-wall fluid temperature distributions for the impingement surfaces under adiabatic conditions. Additionally, flow field measurements were undertaken using particle image velocimetry (PIV). Furthermore, compressible Reynolds-averaged Navier–Stokes (RANS) simulations carried out withansys cfxusing Menter's shear stress transport (SST) turbulence model accompany the experiments. Distributions of effectiveness, velocity, and turbulent kinetic energy detail the complexity of the aerothermal situation. The study was conducted for a jet Reynolds number range from 10,000 to 45,000. The experimental and numerical results are generally in good agreement. Nevertheless, the simulations predict flow features in particular regions of the geometry that are not as prominent in the experiments. These affect the effectiveness distributions, locally. The investigations reveal that the effectiveness is independent of the temperature difference between the heated and cold jet as well as the jet Reynolds number.
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DOI:
--
发表时间:
2001
期刊:
影响因子:
--
作者:
O. Uzol;C. Camcı
通讯作者:
C. Camcı
DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
F. Hoefler;Simon Schueren;J. Wolfersdorf;S. Naik
通讯作者:
S. Naik
影响因子:
5.2
作者:
R. J. Goldstein;W. Seol
通讯作者:
R. J. Goldstein;W. Seol
DOI:
--
发表时间:
1975
期刊:
影响因子:
--
作者:
J. Bouchez;R. J. Goldstein
通讯作者:
R. J. Goldstein
影响因子:
2.6
作者:
K. Nishino;M. Samada;Keiichi Kasuya;K. Torii
通讯作者:
K. Nishino;M. Samada;Keiichi Kasuya;K. Torii