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Journal articles on the topic 'Axial dispersion'

Author: Grafiati

Published: 4 June 2021

Last updated: 18 February 2022

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1

Zarook, S. M., A. A. Shaikh, and S. M. Azam. "Axial dispersion in biofilters." Biochemical Engineering Journal 1, no. 1 (1998): 77–84. http://dx.doi.org/10.1016/s1369-703x(97)00012-0.

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2

Bártová, Darina, Bohumil Jakeš, and Jaromír Kukal. "Generalized semi-opened axial dispersion model." Archives of Control Sciences 22, no. 1 (2012): 59–75. http://dx.doi.org/10.2478/v10170-011-0012-4.

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Generalized semi-opened axial dispersion modelThe axial dispersion model (ADM) is studied and then generalized by a new form of the left boundary condition of semi-open flow system. The resulting parameter driven model covers the traditional axial models: axial closed-opened dispersion model with enforced input concentration (AEO), axial closed-opened dispersion model with input Danckwerts' condition (ACO), and axial opened-opened model (AOO). It also enables development of the degraded axial model (ADO). The research is concerned with both modeling and mathematical solution. Also, many numeri

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3

Sovilj, Milan. "Axial Dispersion in a Three-Phase Gas-Agitated Spray Extraction Column." Collection of Czechoslovak Chemical Communications 63, no. 2 (1998): 283–92. http://dx.doi.org/10.1135/cccc19980283.

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The continuous-phase axial dispersion coefficients of the three-phase gas-liquid-liquid system in a gas-agitated spray extraction column 10 cm i.d. at 20 °C were examined. The system used was water as continuous phase, toluene as dispersed phase, and air as gaseous phase. The rise in the gas phase superficial velocity increased the continuous-phase axial dispersion coefficient. A non-linear dependence between the continuous-phase axial dispersion coefficient and the continuous phase superficial velocity was observed. No correlation was found between the continuous-phase axial dispersion coeffi

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4

Leclerc, Denys F., Carr J. Smith, and E. Clifford Toren. "Axial dispersion in coiled tubular reactors." Analytica Chimica Acta 194 (1987): 109–17. http://dx.doi.org/10.1016/s0003-2670(00)84764-9.

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5

Leclerc, Denys F., Peter A. Bloxham, and E. Clifford Toren. "Axial dispersion in coiled tubular reactors." Analytica Chimica Acta 184 (1986): 173–85. http://dx.doi.org/10.1016/s0003-2670(00)86480-6.

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6

Moore, Christine M. V., and Charles L. Cooney. "Axial dispersion in Taylor-Couette flow." AIChE Journal 41, no. 3 (1995): 723–27. http://dx.doi.org/10.1002/aic.690410329.

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7

Josephson, Gary B., J. G. H. Geeting, D. L. Lessor, and W. B. Barton. "Axial Dispersion during Hanford Saltcake Washing." Separation Science and Technology 41, no. 10 (2006): 2267–82. http://dx.doi.org/10.1080/01496390600745586.

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8

Srinikethan, G., A. Prabhakar, and Y. B. G. Varma. "Axial dispersion in plate-pulsed columns." Bioprocess Engineering 2, no. 4 (1987): 161–68. http://dx.doi.org/10.1007/bf00387323.

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9

Hejtmánek, Vladimír, and Petr Schneider. "Axial dispersion under liquid-chromatography conditions." Chemical Engineering Science 48, no. 6 (1993): 1163–68. http://dx.doi.org/10.1016/0009-2509(93)81044-v.

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10

Gunn, D. J. "On axial dispersion in fixed beds." Chemical Engineering and Processing: Process Intensification 32, no. 6 (1993): 333–38. http://dx.doi.org/10.1016/0255-2701(93)80020-h.

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11

Wu, Zi, and G. Q. Chen. "Axial diffusion effect on concentration dispersion." International Journal of Heat and Mass Transfer 84 (May 2015): 571–77. http://dx.doi.org/10.1016/j.ijheatmasstransfer.2015.01.045.

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12

van Zee, G., R. Veenstra, and J. de Graauw. "Axial dispersion in packed fiber beds." Chemical Engineering Journal and the Biochemical Engineering Journal 58, no. 3 (1995): 245–50. http://dx.doi.org/10.1016/0923-0467(94)02894-x.

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13

Adebiyi, G. A., and D. J. Chenevert. "An Appraisal of One-Dimensional Analytical Models for the Packed Bed Thermal Storage Systems Utilizing Sensible Heat Storage Materials." Journal of Energy Resources Technology 118, no. 1 (1996): 44–49. http://dx.doi.org/10.1115/1.2792692.

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This article gives an appraisal of existing analytical one-dimensional models for the packed bed thermal energy storage (TES) systems utilizing sensible heat storage (SHS) materials. The models include that of Schumann, which is for separate phases, but does not include axial conductivity (or dispersion) in the bed, and the single-phase model of Riaz which includes axial dispersion. An alternative axial conductivity model is proposed which compares well with the Schumann model when axial dispersion is negligible, but otherwise caters adequately for axial dispersion at the low Peclet number con

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14

Adnani, P., I. Catton, and M. A. Abdou. "Non-Darcian Forced Convection in Porous Media With Anisotropic Dispersion." Journal of Heat Transfer 117, no. 2 (1995): 447–51. http://dx.doi.org/10.1115/1.2822542.

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Convective heat transfer in a particle packed tube is modeled in this paper. Axial and radial dispersion are both included in the governing equations. Results are compared with experimental data, and with previously developed models that did not include axial dispersion. It is shown that heat transfer in the thermally developing region is affected by axial dispersion when Peclet number is smaller than 10. Graphic results are provided to show the importance of axial dispersion for various Peclet numbers.

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15

Mishra, Manish, P. K. Das, and Sunil Sarangi. "Transient Behavior of Crossflow Heat Exchangers With Longitudinal Conduction and Axial Dispersion." Journal of Heat Transfer 126, no. 3 (2004): 425–33. http://dx.doi.org/10.1115/1.1738422.

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Transient temperature response of the crossflow heat exchangers with finite wall capacitance and both fluids unmixed is investigated numerically for step, ramp and exponential perturbations provided in hot fluid inlet temperature. Effect of two-dimensional longitudinal conduction in separating sheet and axial dispersion in fluids on the transient response has been investigated. Conductive heat transport due to presence of axial dispersion in fluids have been analyzed in detail and shown that presence of axial dispersion in both of the fluid streams neutralizes the total conductive heat transpo

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16

Almeida, F., F. Rocha, and A. Ferreira. "Analysis of Liquid Flow and Mixing in an Oscillatory Flow Reactor Provided with 2D Smooth Periodic Constrictions." U.Porto Journal of Engineering 4, no. 2 (2018): 1–15. http://dx.doi.org/10.24840/2183-6493_004.002_0001.

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In this research paper the residence time distribution (RTD) was monitored for a range of fluid oscillation, frequency, amplitude and flow rate in two oscillatory flow reactors (OFR) provided with 2D smooth periodic constrictions (2D-SPC) with different designs. It was studied the axial liquid dispersion using axial dispersion model and the mixing efficiency using tank-in-series model for continuous mode. Two cases, with and without fluid oscillation, were studied and determined the optimum conditions to ensure a close plug flow, an efficient mixing and a low axial liquid dispersion. The optim

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17

Kumar Sahoo, Ranjit, and Wilfried Roetzel. "Hyperbolic axial dispersion model for heat exchangers." International Journal of Heat and Mass Transfer 45, no. 6 (2002): 1261–70. http://dx.doi.org/10.1016/s0017-9310(01)00227-7.

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18

Khinast, Johannes G., Dan Luss, Tiberiu M. Leib, and Michael P. Harold. "The boiling slurry reactor: Axial dispersion model." Chemical Engineering Science 54, no. 21 (1999): 5021–29. http://dx.doi.org/10.1016/s0009-2509(99)00347-4.

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19

Lounes, Mustapha, and Jules Thibault. "Axial dispersion in a reciprocating plate column." Canadian Journal of Chemical Engineering 74, no. 2 (1996): 187–94. http://dx.doi.org/10.1002/cjce.5450740203.

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20

Hussein, A. M. "An iterative linearization inverse axial dispersion model." International Communications in Heat and Mass Transfer 21, no. 2 (1994): 217–25. http://dx.doi.org/10.1016/0735-1933(94)90020-5.

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21

Michelsen, Michael L. "The axial dispersion model and orthogonal collocation." Chemical Engineering Science 49, no. 21 (1994): 3675–76. http://dx.doi.org/10.1016/0009-2509(94)00162-6.

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22

Gunn, D. J. "Axial and radial dispersion in fixed beds." Chemical Engineering Science 42, no. 2 (1987): 363–73. http://dx.doi.org/10.1016/0009-2509(87)85066-2.

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23

Nakama, C. S. M., A. F. Siqueira, and A. S. Vianna Jr. "Stochastic axial dispersion model for tubular equipment." Chemical Engineering Science 171 (November 2017): 131–38. http://dx.doi.org/10.1016/j.ces.2017.05.024.

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24

Federspiel, W. J., and J. J. Fredberg. "Axial dispersion in respiratory bronchioles and alveolar ducts." Journal of Applied Physiology 64, no. 6 (1988): 2614–21. http://dx.doi.org/10.1152/jappl.1988.64.6.2614.

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The mixing of gases in the pulmonary acinus was characterized by analyzing axial gas dispersion during steady flow in models of respiratory bronchioles and alveolar ducts. An analysis (method of moments) developed for addressing dispersion in porous media was used to derive an integral expression for the axial dispersion coefficient (D*). Evaluation of D* required solving the Navier-Stokes equations for the flow field and a convection-diffusion type equation arising from the analysis. D* was strongly dependent on alveolar volume per central duct volume, the aperture size through which the alve

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25

Tanaka, G., Y. Ueda, and K. Tanishita. "Augmentation of Axial Dispersion by Intermittent Oscillatory Flow." Journal of Biomechanical Engineering 120, no. 3 (1998): 405–15. http://dx.doi.org/10.1115/1.2798008.

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The efficiency of axial gas dispersion during ventilation with high-frequency oscillation (HFO) is improved by manipulating the oscillatory flow waveform such that intermittent oscillatory flow occurs. We therefore measured the velocity profiles and effective axial gas diffusivity during intermittent oscillatory flow in a straight tube to verify the intermittency augmentation effect on axial gas transfer. The effective diffusivity was dependent on the flow patterns and significantly increased with an increase in the duration of the stationary phase. It was also found that the ratio of effectiv

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26

Fialová, Marie, Ctirad Verner, and Lothar Ebner. "Axial dispersion in the liquid phase in a horizontal two-phase tube reactor." Collection of Czechoslovak Chemical Communications 56, no. 6 (1991): 1249–52. http://dx.doi.org/10.1135/cccc19911249.

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The characteristics of axial dispersion in the liquid phase were measured for two basic flow regimes in a horizontal two-phase tube reactor. The data obtained indicate that in some flow regions, axial dispersion can be quite significant.

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27

Desmet, G., H. Verelst, and G. V. Baron. "Transient and stationary axial dispersion in vortex array flows—I. Axial scan measurements and modeling of transient dispersion effects." Chemical Engineering Science 52, no. 14 (1997): 2383–401. http://dx.doi.org/10.1016/s0009-2509(97)00048-1.

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28

Fialová, Marie, Karl-Heinz Redlich, and Kurt Winkler. "Axial dispersion of the liquid phase in vertical tubular contactors with static mixers." Collection of Czechoslovak Chemical Communications 51, no. 9 (1986): 1925–32. http://dx.doi.org/10.1135/cccc19861925.

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Axial dispersion characteristics in the liquid phase have been determined for three selected types of static mixers using the impulse response technique in a vertical tubular contactor for single phase (water) and two phase (water-air, cocurrent flow arrangement) systems. The character of the measured dependences for individual types of static mixers has been found different and also corresponding values of axial dispersion have been found significant. From the stand point of axial dispersion the behaviour of the static mixer under the two phase flow has been found different from its behaviour

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29

Meloy, J. R., S. J. Neethling, and J. J. Cilliers. "Modelling the axial dispersion of particles in froths." International Journal of Mineral Processing 84, no. 1-4 (2007): 185–91. http://dx.doi.org/10.1016/j.minpro.2006.09.007.

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30

Otawara, K., and T. Matsuoka. "Axial dispersion in a Kureha Crystal Purifier (KCP)." Journal of Crystal Growth 237-239 (April 2002): 2246–50. http://dx.doi.org/10.1016/s0022-0248(01)02238-2.

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31

ZHANG, Dongli, Yanjun ZHANG, Jinli ZHANG, et al. "Axial Liquid Dispersion Characteristics in Magnetically Stabilized Bed." Chinese Journal of Chemical Engineering 14, no. 4 (2006): 532–36. http://dx.doi.org/10.1016/s1004-9541(06)60109-2.

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32

Pydisetty, Y., K. Krishnaiah, and Y. B. G. Varma. "Axial dispersion of solids in spiral fluidised beds." Powder Technology 59, no. 1 (1989): 1–9. http://dx.doi.org/10.1016/0032-5910(89)80090-7.

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33

Roetzel, Wilfried, and Frank Balzereit. "Axial dispersion in shell-and-tube heat exchangers." International Journal of Thermal Sciences 39, no. 9-11 (2000): 1028–38. http://dx.doi.org/10.1016/s1290-0729(00)01190-x.

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34

Liu, Liu, Biao Huang, and Stevan Dubljevic. "Model predictive control of axial dispersion chemical reactor." Journal of Process Control 24, no. 11 (2014): 1671–90. http://dx.doi.org/10.1016/j.jprocont.2014.08.010.

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35

Hydon, P. E., and T. J. Pedley. "Axial dispersion in a channel with oscillating walls." Journal of Fluid Mechanics 249, no. -1 (1993): 535. http://dx.doi.org/10.1017/s0022112093001284.

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36

UYSAL, B. Z., and M. OZILGEN. "AXIAL DISPERSION OF LIQUID IN MOBILE-BED CONTACTING." Chemical Engineering Communications 81, no. 1 (1989): 157–66. http://dx.doi.org/10.1080/00986448908940536.

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37

de Andrade Lima, L. R. P. "Liquid axial dispersion and holdup in column leaching." Minerals Engineering 19, no. 1 (2006): 37–47. http://dx.doi.org/10.1016/j.mineng.2005.05.020.

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38

Nair, Sankar, Samir Verma, and S. C. Dhingra. "Rotary heat exchanger performance with axial heat dispersion." International Journal of Heat and Mass Transfer 41, no. 18 (1998): 2857–64. http://dx.doi.org/10.1016/s0017-9310(98)00004-0.

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39

Palatý, Zdeněk. "Axial Dispersion in an Apparatus with Mobile Packing." Collection of Czechoslovak Chemical Communications 58, no. 5 (1993): 1069–77. http://dx.doi.org/10.1135/cccc19931069.

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The paper deals with modelling of the flow of liquid on a plate with mobile packing. The results of measurements have been interpreted by means of a simple dispersion model whose two parameters were determined from the nonideal step-input of a tracer and its response. It has been found that in the gas flow rate region followed (1.0 - 3.5 m s-1), the liquid flow rate followed (5.36 - 12.5 . 10-3 m s-1), and the static bed height followed (21 - 47 . 10-3 m) the diffusion Peclet number is independent of these quantities. The mean residence time of the liquid on the plate decreases with increasing

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40

Prvcic, Leanne M., H. R. Clive Pratt, and Geoffrey W. Stevens. "Axial dispersion in pulsed-, perforated-plate extraction columns." AIChE Journal 35, no. 11 (1989): 1845–55. http://dx.doi.org/10.1002/aic.690351111.

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41

Tanaka, Gaku, Yoshiro Ueda, Hideki Fujioka, and Kazuo Tanishita. "Improvement of Axial Dispersion by Intermittent Oscillatory Flow." Transactions of the Japan Society of Mechanical Engineers Series B 60, no. 579 (1994): 3672–79. http://dx.doi.org/10.1299/kikaib.60.3672.

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42

Goto, Motonobu, Takahiro Imamura, and Tsutomo Hirose. "Axial dispersion in liquid magnetically stabilized fluidized beds." Journal of Chromatography A 690, no. 1 (1995): 1–8. http://dx.doi.org/10.1016/0021-9673(94)00993-j.

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43

Vinci, Brian J., Barnaby J. Watten, and Michael B. Timmons. "Gas-phase axial dispersion in a spray tower." Aquacultural Engineering 15, no. 1 (1996): 1–11. http://dx.doi.org/10.1016/0144-8609(95)00001-u.

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44

Roetzel, Wilfried, Chakkrit Na Ranong, and Georg Fieg. "New axial dispersion model for heat exchanger design." Heat and Mass Transfer 47, no. 8 (2011): 1009–17. http://dx.doi.org/10.1007/s00231-011-0847-z.

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45

Xu, Manqiu, and J. A. Finch. "The axial dispersion model in flotation column studies." Minerals Engineering 4, no. 5-6 (1991): 553–62. http://dx.doi.org/10.1016/0892-6875(91)90002-d.

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46

Tsuda, Akira, William J. Federspiel, Paul A. Grant, and Jeffrey J. Fredberg. "Axial dispersion of inert species in alveolated channels." Chemical Engineering Science 46, no. 5-6 (1991): 1419–26. http://dx.doi.org/10.1016/0009-2509(91)85068-9.

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47

Kim, Sang Done, Hwa Sung Kim, and Joo Hee Han. "Axial dispersion characteristics in three-phase fluidized beds." Chemical Engineering Science 47, no. 13-14 (1992): 3419–26. http://dx.doi.org/10.1016/0009-2509(92)85053-e.

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48

Kwon, Hyeuk Woong, and Sang Done Kim. "Axial dispersion characteristics in three phase fluidized beds." Korean Journal of Chemical Engineering 7, no. 3 (1990): 182–87. http://dx.doi.org/10.1007/bf02697350.

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49

Yeo, R. W., and T. Z. Fahidy. "A numerical analysis of axial dispersion in electrolyzers." Electrochimica Acta 32, no. 2 (1987): 277–82. http://dx.doi.org/10.1016/0013-4686(87)85035-1.

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50

Moran, Aaron, Mihir Patel, and Orhan Talu. "Axial dispersion effects with small diameter adsorbent particles." Adsorption 24, no. 3 (2018): 333–44. http://dx.doi.org/10.1007/s10450-018-9944-3.

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