減圧沸騰を伴う先細末広ノズルの性能特性(第3報,ノズル内に設置させた細線の影響とポイド率分布)

Material type: 文書・図像類

Author: 藤井, 照重ほか

Publisher: 日本機械学会

Publication date: 1991-01

Material Format: Digital

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Note (General)：: A thin wire is installed just upstream of the throat in a convergent-divergent nozzle in order to decrease pressure undershoot(that is,the degree of t...

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Material Type: 文書・図像類
Title: 減圧沸騰を伴う先細末広ノズルの性能特性(第3報,ノズル内に設置させた細線の影響とポイド率分布)
Author/Editor: 藤井, 照重
太田, 淳一
竹中, 信幸
浅野, 等
小野, 厚夫
FUJII, Terushige
OHTA, Junichi
TAKENAKA, Nobuyuki
ASANO, Hitoshi
ONO, Atsuo
Author Heading: 藤井, 照重
太田, 淳一
竹中, 信幸
浅野, 等
小野, 厚夫
FUJII, Terushige
OHTA, Junichi
TAKENAKA, Nobuyuki
ASANO, Hitoshi
ONO, Atsuo
Publication, Distribution, etc.: 日本機械学会
Publication Date: 1991-01
Publication Date (W3CDTF): 1991-01
Alternative Title: Performance Characteristics of Convergent-Divergent Nozzles for Subcooled Hot Water (3rd Report,Effect of Induced Turbulence on Nozzle Performance)
Periodical title: 日本機械学会論文集. B編
No. or year of volume/issue: 56 533
Volume: 56
Issue: 533
Pages: 256-261
Text Language Code: jpn
Subject Heading: Multiphase Flow
Energy Conversion
Thermal Efficiency
Nonequilibrium
Nozzle Performance
Void Fraction
Neutron Radiography
Target Audience: 一般
Note (General): A thin wire is installed just upstream of the throat in a convergent-divergent nozzle in order to decrease pressure undershoot(that is,the degree of the thermal nonequilibrium)at the throat. To study the effect of the wire diameter(0.3 to 1.5mm)on the nozzle performance,experiments have been carried out using initially subcooled hot water under inlet pressures of 0.47,0.62 and 0.77MPa,and inlet subcoolings of 6,12, and 19 K. The one-dimensional void fraction is measured. Moreover,the measured pressure profiles and void fractions are compared with those calculated using the code "MINI-TRAC". The results are summarized as follows:(1)The greater the inlet subcooling or the lower the inlet pressure,the greater the improvement (using the method of a wire installation)of the nozzle performance. (2)The difference of the wire diameter has little effect on the nozzle performance. The pressure profiles for the nozzle with the wire agree with those calculated from the code "MINI-TRAC". (3)The one-dimensional void fraction profile can be obtained using real-time neutron rasiography and image processing.
Access Restrictions: 限定公開
Rights (production): 〓 1991 日本機械学会
Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）
https://irdb.nii.ac.jp
Original Data Provider (Database): 福井大学 : 福井大学学術機関リポジトリ