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2022-12-15T03:36:49Z
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二次元曲がり流路内の乱流熱伝達に関する実験的研究(助走区間内の時間平均温度と速度・温度変動多重相関)
二次元曲がり流路内の乱流熱伝達に関する実験的研究(助走区間内の時間平均温度と速度・温度変動多重相関)
Experimental Study of Turbulent Heat Transfer in a Two-Dimensional Curved Channel : Time-Mean Temperature and Multiple Temperature/Velocity Correlations in the Entrance Section
小林, 睦夫
前川, 博
高野, 剛
小林, 正人
日本機械学会
本文データは学会の許諾に基づくCiNiiからの複製である
Forced Convection
Turbulent Flow
Heat Transfer
Curved Channel
Fluctuation
Measurement
Heat Flux
Correlation
Entrance Section
Full measurements of thermal field were made for a turbulent flow of air in the entrance section of a two-dimensional curved channel. The wall heat flux develops more rapidly than the mean temperature distribution, decreasing and increasing on the inner and outer walls, respectively. Locations at which the mean temperature gradient and the radial component of turbulent heat flux become zero do not coincide in this case, and the eddy diffusivity of heat becomes negative in a region of about 20% of the channel width. In the vicinity of the wall, the temperature fluctuation intensity normalized by the friction temperature is not affected by the wall curvature, whereas the cross correlation coefficients between velocity and temperature fluctuations, the skewness and the flatness are appreciably affected by it. The triple correlations relating to the transverse diffusion decrease and increase remarkably in the inner and outer sides of the channel, respectively.
日本機械学会
1992-03
jpn
journal article
http://hdl.handle.net/10191/5744
https://niigata-u.repo.nii.ac.jp/records/3729
http://ci.nii.ac.jp/naid/110002390586
AN00187441
03875016
日本機械学会論文集. B編
日本機械学会論文集. B編
58
547
857
864
https://niigata-u.repo.nii.ac.jp/record/3729/files/9_0042.pdf
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2019-07-30