このアイテムのアクセス数: 1

このアイテムのファイル:
ファイル 記述 サイズフォーマット 
j.net.2016.06.007.pdf5.1 MBAdobe PDF見る/開く
タイトル: Bubbly, Slug, and Annular Two-Phase Flow in Tight-Lattice Subchannels
著者: Prasser, Horst-Michael
Bolesch, Christian
Cramer, Kerstin
Ito, Daisuke
Papadopoulos, Petros
Saxena, Abhishek
Zboray, Robert
著者名の別形: 伊藤, 大介
キーワード: Computational Fluid Dynamics
Subchannel Flow
Tight Fuel Rod Lattice
TomographyTwo-Phase Flow
Void Fraction
発行日: Aug-2016
出版者: Elsevier BV
誌名: Nuclear Engineering and Technology
巻: 48
号: 4
開始ページ: 847
終了ページ: 858
抄録: An overview is given on the work of the Laboratory of Nuclear Energy Systems at ETH, Zurich (ETHZ) and of the Laboratory of Thermal Hydraulics at Paul Scherrer Institute (PSI), Switzerland on tight-lattice bundles. Two-phase flow in subchannels of a tight triangular lattice was studied experimentally and by computational fluid dynamics simulations. Two adiabatic facilities were used: (1) a vertical channel modeling a pair of neighboring subchannels; and (2) an arrangement of four subchannels with one subchannel in the center. The first geometry was equipped with two electrical film sensors placed on opposing rod surfaces forming the subchannel gap. They recorded 2D liquid film thickness distributions on a domain of 16 × 64 measuring points each, with a time resolution of 10 kHz. In the bubbly and slug flow regime, information on the bubble size, shape, and velocity and the residual liquid film thickness underneath the bubbles were obtained. The second channel was investigated using cold neutron tomography, which allowed the measurement of average liquid film profiles showing the effect of spacer grids with vanes. The results were reproduced by large eddy simulation + volume of fluid. In the outlook, a novel nonadiabatic subchannel experiment is introduced that can be driven to steady-state dryout. A refrigerant is heated by a heavy water circuit, which allows the application of cold neutron tomography.
著作権等: © 2016, Published by Elsevier Korea LLC on behalf of Korean Nuclear Society. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
URI: http://hdl.handle.net/2433/227131
DOI(出版社版): 10.1016/j.net.2016.06.007
出現コレクション:学術雑誌掲載論文等

アイテムの詳細レコードを表示する

Export to RefWorks


出力フォーマット 


このリポジトリに保管されているアイテムはすべて著作権により保護されています。