规整填料内单相流的LDV实验研究

CIESC Journal

• TRANSPORT PHENOMENA & FLUID MECHANICS • 上一篇下一篇

规整填料内单相流的LDV实验研究

陈江波; 刘春江; 李莹珂; 黄莹; 袁希钢; 余国琮

State Key Laboratory of Chemical Engineering, Chemical Engineering Research Center, Tianjin University, Tianjin 300072, China

收稿日期:2007-01-30 修回日期:1900-01-01 出版日期:2007-12-28 发布日期:2007-12-28
通讯作者: 陈江波

Experimental investigation of single-phase flow in structured packing by LDV

CHEN Jiangbo; LIU Chunjiang; LI Yingke; HUANG Ying; YUAN Xigang; YU Guocong

State Key Laboratory of Chemical Engineering, Chemical Engineering Research Center, Tianjin University, Tianjin 300072, China

Received:2007-01-30 Revised:1900-01-01 Online:2007-12-28 Published:2007-12-28
Contact: CHEN Jiangbo

摘要/Abstract

摘要： To date, many models have been developed to calculate the flow field in the structured packing by the computational fluid dynamics (CFD) technique, but little experimental work has been carried out to serve the vali-dation of flow simulation. In this work, the velocity profiles of single-phase flow in structured packing are meas-ured at the Reynolds numbers of 20.0, 55.7 and 520.1, using the laser Doppler velocimetry (LDV). The time-averaged and instantaneous velocities of three components are obtained simultaneously. The CFD simulation is also carried out to numerically predict the velocity distribution within the structured packing. Comparison shows that the flow pattern, velocity distribution and turbulent kinetic energy (for turbulent flow) on the horizontal plane predicted by CFD simulation are in good agreement with the LDV measured data. The values of the x-and z-velocity components are quantitatively well predicted over the plane in the center of the packing, but the predicted y-component is sig-nificantly smaller than the experimental data. It can be concluded that experimental measurement is important for further improvement of CFD model.

关键词: velocity profile;structured packing;laser Doppler velocimetry;computational fluid dynamics

Abstract: To date, many models have been developed to calculate the flow field in the structured packing by the computational fluid dynamics (CFD) technique, but little experimental work has been carried out to serve the vali-dation of flow simulation. In this work, the velocity profiles of single-phase flow in structured packing are meas-ured at the Reynolds numbers of 20.0, 55.7 and 520.1, using the laser Doppler velocimetry (LDV). The time-averaged and instantaneous velocities of three components are obtained simultaneously. The CFD simulation is also carried out to numerically predict the velocity distribution within the structured packing. Comparison shows that the flow pattern, velocity distribution and turbulent kinetic energy (for turbulent flow) on the horizontal plane predicted by CFD simulation are in good agreement with the LDV measured data. The values of the x-and z-velocity components are quantitatively well predicted over the plane in the center of the packing, but the predicted y-component is sig-nificantly smaller than the experimental data. It can be concluded that experimental measurement is important for further improvement of CFD model.

Key words: velocity profile, structured packing, laser Doppler velocimetry, computational fluid dynamics

陈江波, 刘春江, 李莹珂, 黄莹, 袁希钢, 余国琮. 规整填料内单相流的LDV实验研究[J]. CIESC Journal.

CHEN Jiangbo, LIU Chunjiang, LI Yingke, HUANG Ying, YUAN Xigang, YU Guocong. Experimental investigation of single-phase flow in structured packing by LDV[J]. .

参考文献

1 Spiegel, L., Meier, W., “Distillation columns with struc-tured packings in the next decade”, Trans IChemE., 81, 39—47 (2003).
2 Hodson, J.S., Fletcher, J.R., Porter K.E., “Fluid me-chanical studies of structured distillation packings”, In: Institution of Chemical Engineers Symposium Series, AIChE, New York, No.142, 999—1007(1997).
3 van Gulijk, C., “Using computational fluid dynamics to calculate transversal dispersion in a structured packed bed”, Comput. Chem. Eng., 22, S767—S770(1998).
4 Higler, A.P., Krishna, R., Ellenberger, J., Taylor, R., “Counter-current operation of a structured catalytically packed-bed reactor: Liquid phase mixing and mass transfer”, Chem. Eng. Sci., 54, 5145—5152(1999).
5 van Baten, J.M., Ellenberger, J., Krishna, R., “Radial and axial dispersion of the liquid phase within a KATAPAK-S structure: Experiments vs. CFD simula-tions”, Chem. Eng. Sci., 56, 813—821(2001).
6 van Baten, J.M., Krishna, R., “Gas and liquid phase mass transfer within KATAPAK-S structures studied using CFD simulations”, Chem. Eng. Sci., 57, 1531—1536(2002).
7 Petre, C.F., Larachi, F., Illiuta, I., Grandjean, B.P.A., “Pressure drop through structured packings: Breakdown into the contributing mechanisms by CFD modeling”, Chem. Eng. Sci., 58, 163—177(2003).
8 Larachi, F., Petre, C.F., Iliuta, I., Grandjean, B., “Tailor-ing the pressure drop of structured packings through CFD simulations”, Chem. Eng. Process., 42, 535—541(2003).
9 Zhang, P., Liu, C.J., Yuan, X.G., Yu, K.T., “CFD simula-tions of liquid phase flow in structured packed column”, J. Chem. Ind. Eng. (China), 55(8), 1369—1373(2004).
10 Szulczewska, B., Zbicinski, I., Gorak, I., “Liquid flow on structured packing: CFD simulation and experimental study”, Chem. Eng. Technol., 26(5), 580—584(2003).
11 Li, J., Huang, S.Y., Wang, X.M., “Numerical study of steam-water separators with wave-type vanes”, Chin. J. Chem. Eng., 15(4), 492—498(2007).
12 Gu, F., Liu, C.J., Yuan, X.G., Yu K.T., “CFD simulation of liquid film flow on inclined plates”, Chem. Eng. Tech-nol., 27(10), 1099—1104(2004).
13 Raynal, L., Boyer, C., Ballaguet, J.P., “Liquid holdup and pressure drop determination in structured packing with CFD simulations”, Can. J. Chem. Eng., 82, 871—879(2004).
14 Valluri, P., “Multiphase fluid dynamics in structured packings”, Ph.D. Thesis, Imperial College London, Uni-versity of London, UK.
15 Valluri, P., Matar, O.K., Hewitt, G.F., Mendes, M.A., “Thin film flow over structured packings at moderate Reynolds numbers”, Chem. Eng. Sci., 60, 1965—1975(2005).
16 Armenante, P.M., Luo, C.G., Chou, C.C., Fort, I., Medek, J., “Velocity profiles in a closed, unbaffled vessel: Com-parison between experimental LDV data and numerical CFD predictions”, Chem. Eng. Sci., 52(20), 3483—3492(1997).
17 Li, M.Z., White, G., Wilkinson, D., “LDA measurements and CFD modeling of a stirred vessel with a retreat curve impeller”, Ind. Eng. Chem. Res., 43, 6534—6547(2004).
18 Delnoij, E., Kuipers, J.A.M., van Swaaij, W.P.M., Westerweel, J., “Measurement of gas-liquid two-phase flow in bubble columns using ensemble correlation PIV”, Chem. Eng. Sci., 55(17), 3385—3395(2000).
19 Sousa, R.G., Riethmuller, M.L., Pinto, A.M.F.R., Campos, J.B.L.M., “Flow around individual Taylor bubbles rising in stagnant CMC solutions: PIV measurements”, Chem. Eng. Sci., 60(7), 1859—1873(2005).
20 Suekane, T., Yokouchi, Y., Hirai, S., “Inertial flow struc-tures in a simple-packed bed of spheres”, AIChE J., 49(1), 10—17(2003).
21 Gunjal, P.R., Ranade, V.V., Chaudhari, R.V., “Computa-tional study of a single-phase flow in packed beds of spheres”, AIChE J., 51(2), 365—378(2005).
22 Liu, G.Q., Ma, L.X., Liu, J., Material Properties Hand-book in Chemistry and Chemical Engineering, 2nd edi-tion, Chemical Industry Press, Beijing (2002).
23 Dantec Dynamics A/S, “BSA Flow Software (v2.1) In-stallation & User’s Guide”, P.O.Box 121, Denmark (2003).
24 User’s Guide of Fluent 6.1, Fluent Inc., 2001.
25 Harris, C.K., Roekaerts, D., Rosendal, F.J.J., Buitendijk, F.G.J., Daskopoilos, Ph., Vreenegoor, A.J.N., Wang, H., “Computational fluid dynamics for chemical reactor en-gineering”, Chem. Eng. Sci., 51, 1569—1594(1996).
26 Ng, K., Fentiman, N.J., Lee, K.C., Yianneskis, M., “As-sessment of sliding mesh CFD predictions and LDA measurements of the flow in a tank stirred by a Rushton impeller”, Trans. IChemE, 76, 737—747(1998).
27 Li, M.Z., White, G., Wilkinson, D., “LDA measurements and CFD modeling of a stirred vessel with a retreat curve impeller”, Ind. Eng. Chem. Res., 43, 6534—6547(2004).

规整填料内单相流的LDV实验研究

Experimental investigation of single-phase flow in structured packing by LDV

PDF (PC)

可视化

被引次数

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 0

编辑推荐

Metrics

本文评价