Axial development of gas-liquid flow regime maps in a vertical 5 x 5 rod bundle with prototypic spacer grids

被引:8
作者
Liu, Hang [1 ]
Pan, Liang-ming [1 ]
Hibiki, Takashi [2 ]
Zhou, Wen-xiong [1 ]
Ren, Quan-yao [1 ]
Li, Song-song [1 ]
机构
[1] Chongqing Univ, Minist Educ, Key Lab Low Grade Energy Utilizat Technol & Syst, Chongqing 400044, Peoples R China
[2] Purdue Univ, Sch Nucl Engn, 400 Cent Dr, W Lafayette, IN 47907 USA
基金
中国国家自然科学基金;
关键词
Flow regime map; Flow regime transition criteria; Spacer girds; Rod bundles; DRIFT-FLUX MODEL; 2-PHASE FLOW; TRANSITION CRITERIA; PATTERNS; WATER;
D O I
10.1016/j.nucengdes.2018.08.021
中图分类号
TL [原子能技术]; O571 [原子核物理学];
学科分类号
0827 ; 082701 ;
摘要
In relation to the development of flow regime criteria for rod bundle geometry, this paper provides several experimental flow regime maps at different axial locations with simple and prototypic spacer grids, respectively. Experiments with vertical adiabatic air-water flow were conducted under an atmospheric pressure condition. The experiment facility was composed of 5 x 5 rod arranged on a square pitch in a square casing with 9.5 mm outside diameter and 12.6 mm pitch. The inlet superficial gas velocities range from 0.01 to 8.69 m/s, while inlet superficial liquid velocities range from 0.06 to 2.51 m/s. New flow regime maps were acquired at three axial locations of z/D-H = 21.9, 58.4 and 107 through high-speed camera images. The experimental maps obtained were compared with the existing analytical models of flow regime transition criteria for vertical rod bundles. A reasonable agreement has been obtained between measured flow regime maps and models of the existing flow regime transition criteria for rod bundles at fully developed flow conditions. The different effects of two types of spacer grids on the flow regime transition were also discussed in this paper.
引用
收藏
页码:1 / 10
页数:10
相关论文
共 25 条
  • [1] Akbar MK, 2002, ASME 2002 INT MECH E, V7, P527
  • [2] Bergles A. E., 1968, INVESTIGATION BOILIN
  • [3] Flow regime transition criteria for two-phase flow in a vertical annulus
    Enrique Julia, J.
    Hibiki, Takashi
    [J]. INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW, 2011, 32 (05) : 993 - 1004
  • [4] Flow regime development analysis in adiabatic upward two-phase flow in a vertical annulus
    Enrique Julia, J.
    Ozar, Basar
    Jeong, Jae-Jun
    Hibiki, Takashi
    Ishii, Mamoru
    [J]. INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW, 2011, 32 (01) : 164 - 175
  • [5] He YJ, 2017, IEEE C ELEC DEVICES
  • [6] Flow regime transition criteria for upward two-phase flow in vertical narrow rectangular channels
    Hibiki, T
    Mishima, K
    [J]. NUCLEAR ENGINEERING AND DESIGN, 2001, 203 (2-3) : 117 - 131
  • [7] Drift-flux model in a sub-channel of rod bundle geometry
    Julia, J. Enrique
    Hibiki, Takashi
    Ishii, Mamoru
    Yun, Byong-Jo
    Park, Goon-Cherl
    [J]. INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2009, 52 (13-14) : 3032 - 3041
  • [8] KATAOKA I, 1987, INT J HEAT MASS TRAN, V30, P1927, DOI 10.1016/0017-9310(87)90251-1
  • [9] Flow regime transition criteria for upward two-phase flow in vertical rod bundles
    Liu, Hang
    Hibiki, Takashi
    [J]. INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2017, 108 : 423 - 433
  • [10] Lu G., 2009, ASME 2009 INT MECH E, P1579