Hydrodynamics in two-phase flow within porous media

被引:9
作者
Anadon, LD [1 ]
Lim, MHM [1 ]
Sederman, AJ [1 ]
Gladden, LF [1 ]
机构
[1] Univ Cambridge, Dept Chem Engn, Cambridge CB2 3RA, England
基金
英国工程与自然科学研究理事会;
关键词
trickle bed reactor; pulsing regime; hydrodynamics; two-phase flow; FLASH; TRICKLE-BED REACTORS; PULSING FLOW;
D O I
10.1016/j.mri.2004.11.040
中图分类号
R8 [特种医学]; R445 [影像诊断学];
学科分类号
1002 ; 100207 ; 1009 ;
摘要
Ultra-fast magnetic resonance imaging techniques are used to image liquid distribution in two and three dimensions during air-water co-current down flow through a fixed bed of cylindrical porous pellets of length and diameter 3 mm, packed within a 43 min internal diameter column in both the trickle- and pulsing-flow regimes. The data acquisition times used were 20 and 280 ms, giving 2-D and 3-D spatial resolutions of 1.4 mm x 2.8 min and 3.75 mm x 3.75 mm x 1.87 mm, respectively. This work reports images of local pulsing events within the bed occurring during the trickle-to-pulse flow transition. The evolution of the local instabilities is studied as a function of increasing liquid velocity at constant gas velocity. (c) 2005 Elsevier Inc. All rights reserved.
引用
收藏
页码:291 / 294
页数:4
相关论文
共 5 条
[1]  
Boelhouwer JG, 2002, CHEM ENG SCI, V57, P4865
[2]   FLASH IMAGING - RAPID NMR IMAGING USING LOW FLIP-ANGLE PULSES [J].
HAASE, A ;
FRAHM, J ;
MATTHAEI, D ;
HANICKE, W ;
MERBOLDT, KD .
JOURNAL OF MAGNETIC RESONANCE, 1986, 67 (02) :258-266
[3]   RARE IMAGING - A FAST IMAGING METHOD FOR CLINICAL MR [J].
HENNIG, J ;
NAUERTH, A ;
FRIEDBURG, H .
MAGNETIC RESONANCE IN MEDICINE, 1986, 3 (06) :823-833
[4]   Investigation of the two phase flow in trickle-bed reactors using capacitance tomography [J].
Reinecke, N ;
Mewes, D .
CHEMICAL ENGINEERING SCIENCE, 1997, 52 (13) :2111-2127
[5]   Transition to pulsing flow in trickle-bed reactors studied using MRI [J].
Sederman, AJ ;
Gladden, LF .
AICHE JOURNAL, 2005, 51 (02) :615-621