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Journal articles on the topic 'Rushton Turbine'

Author: Grafiati

Published: 4 June 2021

Last updated: 16 June 2025

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1

Ranade, V. V., M. Perrard, N. Le Sauze, C. Xuereb, and J. Bertrand. "Trailing Vortices of Rushton Turbine." Chemical Engineering Research and Design 79, no. 1 (2001): 3–12. http://dx.doi.org/10.1205/026387601528471.

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2

Belhanafi, Abdelghani, Zied Driss, and Mohamed Salah Abid. "Hydrodynamic Comparative Study on the Pumping Effects of a Square Tank Equipped with Single-Stage and Bi-Stage Impellers." Acta Universitatis Sapientiae, Electrical and Mechanical Engineering 14, no. 1 (2022): 1–12. http://dx.doi.org/10.2478/auseme-2022-0001.

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Abstract A computational fluid dynamics simulation is done for comparative study from the pumping effect on the four surfaces of the stirred tank. The flow field generated by one-stage and bi-stage six-bladed Rushton turbine in the unbaffled square tank was studied. The Reynolds-averaged Navier-Stokes equation with steady-state multi-reference frame approach (MRF) is used to simulate hydrodynamic flow in the tank. The turbulent viscosity, the turbulent kinetic energy and mean velocity distributions obtained in vertical and horizontal plans are analyzed and discussed. We can deduce that the additional Rushton turbine in the upper part of the square tank improves the quality of the mixture.

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3

Fan, Jun Ling, and De Yu Luan. "Numerical Simulation of Laminar Flow Field in a Stirred Tank with a Rushton Impeller or a Pitch 4-Bladed Turbine." Advanced Materials Research 557-559 (July 2012): 2375–82. http://dx.doi.org/10.4028/www.scientific.net/amr.557-559.2375.

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Computational fluid dynamics (CFD) method was applied to the study of flow field in the agitation of glycerin fluid with a Rushton impeller and a pitch 4-bladed turbine. The flow was modeled as laminar and a multiple reference frame (MRF) approach was used to solve the discretized equations of motion. The velocity profiles predicted by the simulation with four different impellers rotating at constant speed of 200r/min were obtained. By analysis to their axial, radial and tangent velocity vector plots, velocity contours and velocity distribution curves, it was found that the stirred effect of the Rushton impeller was better than one of the pitch 4-bladed turbines，however，accompanied with high power consumption according to the calculated values of required power. Moreover, there were all similar flow characteristics for the pitch 4-bladed turbines with different blade pitch angle. The research provided a theoretical basis for the design and practical application of the stirred tank under laminar flow.

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4

Ståhl Wernersson, Eva, and Christian Trägårdh. "Scale-up of Rushton turbine-agitated tanks." Chemical Engineering Science 54, no. 19 (1999): 4245–56. http://dx.doi.org/10.1016/s0009-2509(99)00127-x.

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5

Sadikin, Azmahani, Md Iskandar Md Noor, Norasikin Mat Isa, Siti Mariam Basharie, and Amir Khalid. "Pressure Distribution around Mixing Blades in Biodiesel Reactor Using Computational Fluid Dynamics (CFD)." Applied Mechanics and Materials 554 (June 2014): 381–85. http://dx.doi.org/10.4028/www.scientific.net/amm.554.381.

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This paper presented simulation analysis of stress distribution along a mixing blades propeller used in biodiesel reactor tank. The mixing blade types used are: (1) three bladed mixing propeller, (2) pitch turbine blade and (3) Rushton blade. ANSYS FLUENT software was used to run the simulation. The maximum stress occurs when using three bladed mixing propellers type. The minimum stress occurs when using the Rushton blade. Therefore, the Rushton blade is the best blade used for biodiesel reactor. Stress concentration is observed at the fillet for all blade types. The selection of the right type mixing blade can improve the biodiesel production and lower the maintenance cost. The result obtained from the simulation is agreed well with the published data.

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6

Bliem, Volker, and Heyko Jürgen Schultz. "Investigation of Horizontal Velocity Fields in Stirred Vessels with Helical Coils by PIV." International Journal of Chemical Engineering 2014 (2014): 1–8. http://dx.doi.org/10.1155/2014/763473.

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Horizontal velocity flow fields were measured by particle image velocimetry for a stirred vessel with baffles and two helical coils for enlargement of heat transfer area. The investigation was carried out in a cylindrical vessel with flat base and two different stirrers (radial-flow Rushton turbine and axial-flow propeller stirrer). Combined velocity plots for flow fields at different locations are presented. It was found that helical coils change the flow pattern significantly. Measurements for the axial-flow Rushton turbine showed a strong deflection by the coils, leading to a mainly tangential flow pattern. Behind baffles large areas of unused heat transfer area were found. First results for the axial-flow propeller reveal an extensive absence of fluid movement in the horizontal plane. Improved design considerations for enhanced heat transfer by more compatible equipment compilation are proposed.

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7

Zhang, Yulong, Zhengming Gao, Zhipeng Li, and J. J. Derksen. "Transitional flow in a Rushton turbine stirred tank." AIChE Journal 63, no. 8 (2017): 3610–23. http://dx.doi.org/10.1002/aic.15809.

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8

Nienow, A. W. "Hydrodynamics of Stirred Bioreactors." Applied Mechanics Reviews 51, no. 1 (1998): 3–32. http://dx.doi.org/10.1115/1.3098990.

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This review of the hydrodynamics of stirred bioreactors begins with an introduction to the agitation problems of particular concern in such systems. This is followed by a brief review of some basic concepts in turbulence and rheology of relevance to bioreactors. Important aspects of single phase mixing in low viscosity, high viscosity and Theologically complex broths are then covered in some detail including flow patterns, power number versus Reynolds number plots (including the modification of the latter to allow for shear thinning broths), flow numbers, energy dissipation rates and flow close to impellers and between multiple impeller systems. From these basic principles, the problem of homogenization is then covered in depth because of its significance for bioreactor performance. Aeration concepts are then introduced and the behavior of traditional Rushton turbine impellers is then treated in detail, covering the flow patterns, aerated power characteristics, mixing time and scale-up considerations. The weaknesses of the Rushton turbine are then discussed which leads into a section describing how more modern impellers are able to improve on many of these, especially emphasising their ability to introduce more energy dissipation into the broth and handle more air before flooding, both of which enhance oxygen transfer. The improvement in bulk blending found with multiple axial flow agitators is brought out too. Finally, the retrofitting of fermenters originally containing Rushton turbines with these more modern impellers is discussed. In conclusion, it is clear that there have been substantial increases in the understanding of stirred bioreactor hydrodynamics. However, whilst further understanding will occur within the framework discussed here, the expectation must be that computational fluid dynamics will increase in importance in spite of the difficulty of handling complex rheology, multiphase systems and biological responses. This review article has 135 references.

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9

Ochieng, Aoyi, and Maurice Onyango. "CFD simulation of the hydrodynamics and mixing time in a stirred tank." Chemical Industry and Chemical Engineering Quarterly 16, no. 4 (2010): 379–86. http://dx.doi.org/10.2298/ciceq100211040o.

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Hydrodynamics and mixing efficiency in stirred tanks influence power draw and are therefore important for the design of many industrial processes. In the present study, both experimental and simulation methods were employed to determine the flow fields in different mixing tank configurations in single phase system. The laser Doppler velocimetry (LDV) and computational fluid dynamics (CFD) techniques were used to determine the flow fields in systems with and without a draft tube. There was a reasonable agreement between the simulation and experimental results. It was shown that the use of a draft tube with the Rushton turbine and hydrofoil impeller resulted in a reduction in the homogenization energy by 19.2% and 17.7%, respectively. This indicates that a reduction in the operating cost can be achieved with the use of a draft tube in a stirred tank and there would be a greater cost reduction in a system stirred by the Rushton turbine compared to that stirred by a propeller.

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10

Dai, Li, Li Bin Yang, and Kai Liu. "Numerical Investigation on the Stirred Reactor with Rushton Turbine." Advanced Materials Research 881-883 (January 2014): 1823–26. http://dx.doi.org/10.4028/www.scientific.net/amr.881-883.1823.

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Computational Fluid Dynamics (CFD) simulation is expected to give detailed flow information which is important for stirred reactor design and optimization, however accurate flow prediction remains a challenge for CFD application. In the present paper, influence of discretization scheme on the flow prediction in a stirred reactor with Rushton turbine was investigated. Standardk-εturbulent model and MRF model was adopted and numerical results obtained by using three different discretization schemes were compared. Results showed that the numerical results agreed well with data provided in literature. It is acceptable to use any discreticaiton method if aiming at a general flow field, while QUICK is recommended considering the more detailed flow information.

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11

Ameur, Houari. "Modifications in the Rushton turbine for mixing viscoplastic fluids." Journal of Food Engineering 233 (September 2018): 117–25. http://dx.doi.org/10.1016/j.jfoodeng.2018.04.005.

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12

Stoots, Carl M., and Richard V. Calabrese. "Mean velocity field relative to a Rushton turbine blade." AIChE Journal 41, no. 1 (1995): 1–11. http://dx.doi.org/10.1002/aic.690410102.

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13

Patil, Pramod, and Sanjeev Kumar. "Breakup of drops around the edges of Rushton turbine." Canadian Journal of Chemical Engineering 88, no. 6 (2010): 912–18. http://dx.doi.org/10.1002/cjce.20387.

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14

Escudié, Renaud, Denis Bouyer, and Alain Liné. "Characterization of trailing vortices generated by a Rushton turbine." AIChE Journal 50, no. 1 (2004): 75–86. http://dx.doi.org/10.1002/aic.10007.

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15

Galaction, Anca-Irina, Anca-Marcela Lupăşteanu, Marius Turnea, and Dan Caşcaval. "Comparative analysis of mixing efficiency and distribution induced by radial impellers in bioreactors with stirred bed of immobilized cells." Chemical Industry and Chemical Engineering Quarterly 16, no. 1 (2010): 47–64. http://dx.doi.org/10.2298/ciceq090407002g.

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The influences of the main factors on the mixing efficiency and distribution for a bioreactor with stirred/mobile bed of immobilized S. cerevisiae cells in alginate (biocatalyst particles with 4, 4.6 and 5.2 mm diameters) have been comparatively analyzed for six radial impellers: a disperser sawtooth, Smith turbine, a pumper mixer, a curved bladed turbine, a paddle with six blades, a pitched bladed turbine vs. Rushton turbine. The most efficient impellers, from the viewpoint of intensity and uniformity of the suspension circulation were found to be the Smith turbine, the paddle with six blades and the pitched bladed turbine. The mathematical correlations describing the influence of the main factors on mixing time were established for each studied impeller offering a good concordance with the experimental data (the average deviations vary from ?7.9% for pitched bladed turbine to ?12.1% for disperser sawtooth).

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16

Devi, Tamphasana, and Bimlesh Kumar. "CFD simulation of flow patterns in unbaffled stirred tank with CD-6 impeller." Chemical Industry and Chemical Engineering Quarterly 18, no. 4-1 (2012): 535–46. http://dx.doi.org/10.2298/ciceq111130029d.

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Understanding the flow in stirred vessels can be useful for a wide number of industrial applications. There is a wealth of numerical simulations of stirring vessels with standard impeller such as Rushton turbine and pitch blade turbine. Here, a CFD study has been performed to observe the spatial variations (angular, axial and radial) of hydrodynamics (velocity and turbulence field) in unbaffled stirred tank with Concave-bladed Disc turbine (CD-6) impeller. Three speeds (N=296, 638 & 844.6 rpm) have been considered for this study. The angular variations of hydrodynamics of stirred tank were found very less as compared to axial and radial variations.

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17

Płusa, T., and P. Duda. "Modeling of free-surface shape in unbaffled tanks." Journal of Physics: Conference Series 2367, no. 1 (2022): 012004. http://dx.doi.org/10.1088/1742-6596/2367/1/012004.

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Abstract This paper aims to present a numerical investigation of the two-phase flow in unbaffled uncovered stirred tanks equipped with a Rushton turbine. The shaft is positioned eccentrically. As simulation software, the Simcenter Star CCM+ 2021.2 is used to carry out multiphase unsteady simulations. Next, the numerical results are compared with results obtained on a test bench.

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18

Batista, Maurici Cunha, Vitor da Silva Rosa, and Deovaldo de Moraes Júnior. "ROTEIRO DE PROJETO DE CHICANA TUBULAR VERTICAL EM TANQUES AGITADOS COM TURBINA RUSHTON." Brazilian Journal of Technology 4, no. 4 (2021): 155–69. http://dx.doi.org/10.38152/bjtv4n3-003.

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Tanques agitados são de grande importância nos processos industriais, podendo ser empregados como reatores, misturadores, armazenagem de fluídos ou no aquecimento e resfriamento de líquidos newtonianos e não-Newtonianos. Geralmente são equipados com impulsores mecânicos radiais ou axiais e como superfícies de troca térmica, as camisas, serpentinas helicoidais, espirais ou chicanas tubulares verticais. Este artigo teve como objetivo apresentar um roteiro de projeto para dimensionar a área de troca térmica de chicanas tubulares verticais e determinar a potência do motor enquanto gira o eixo da turbina Rushton a 250 rpm durante o aquecimento de 50 litros de CMC (1% w/w) a uma temperatura inicial (bulk) de 25°C até atingir a temperatura de 45°C. O processo foi realizado em batelada por uma hora. Foi utilizada água como fluido quente, sendo que a temperatura de entrada foi mantida constante a 60°C. A área de troca térmica foi obtida em função do coeficiente global de transferência de calor através de modelos matemáticos encontrados na literatura. O trocador de calor dimensionado nesse exemplo foi composto por 4 chicanas de 3 tubos, sendo satisfatório com as relações propostas por Rushton.

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19

Guillard, Fabrice, and Christian Trägårdh. "Mixing in industrial Rushton turbine-agitated reactors under aerated conditions." Chemical Engineering and Processing: Process Intensification 42, no. 5 (2003): 373–86. http://dx.doi.org/10.1016/s0255-2701(02)00058-2.

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20

Lee, K. C., and M. Yianneskis. "Turbulence properties of the impeller stream of a Rushton turbine." AIChE Journal 44, no. 1 (1998): 13–24. http://dx.doi.org/10.1002/aic.690440104.

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21

Roman, R. V., Z. R. Tudose, M. Gavrilescu, M. Cojocaru, and S. Luca. "Performance of industrial scale bioreactors with modified RUSHTON turbine agitators." Acta Biotechnologica 16, no. 1 (1996): 43–56. http://dx.doi.org/10.1002/abio.370160107.

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22

Ghobadi, Narges, Chiaki Ogino, and Naoto Ohmura. "Intensifying the Fermentation of Aspergillus oryzae in a Stirred Bioreactor Using Maxblend Impeller." Open Chemical Engineering Journal 10, no. 1 (2016): 88–109. http://dx.doi.org/10.2174/1874123101610010088.

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Background: The intensification of fermentation in stirred bioreactors is an attractive approach for commercial interests and industries that work with biochemical products. Alpha amylase is an enzymatic bio-products that is produced largely from Aspergillus oryzae. Using adaptable agitator can be an efficient way for stirred fermentation. Objective: This study, concentrated on enhancing the mixing process in order to intensify Aspergillus oryzae fermentation. A straight type of Maxblend® impeller was used as an agitator to investigate the incubation parameters compared with the use of a 6-blade double Rushton turbine. Method: Stirred fermentation was done in batch condition. Effect of flow pattern of mixing on fermentation parameters was investigated after each sampling. Results: The results showed that the Maxblend® significantly intensified both enzyme activity and growth rate at low and moderate rates of power consumption (P). The main reason for the decreases in the growth rate and the enzyme activity during agitation by the Rushton turbine at low and high Pv was the lack of oxygen and mycelial damage, respectively. Additionally, use of the Maxblend® significantly intensified the KLa at low and moderate rates of power consumption. Conclusion: Axial and uniform mixing by Maxblend® impeller was resulted in improving the fermentation characteristics and enzyme activity.

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23

Młynarczykowska, Anna, Simone Ferrari, Luana Demurtas, and Marek Jaszczur. "An experimental investigation on the fluid flow mixing process in agitated vessel." EPJ Web of Conferences 269 (2022): 01040. http://dx.doi.org/10.1051/epjconf/202226901040.

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The fluid mixing process is a common supportive phenomenon that often occurs in a large number of industrial systems. This phenomenon is the subject of many numerical and experimental analysis. The mixing process effectiveness depends on: mixing tank construction, mixing phases viscosity, temperature, density of liquids and, what is crucial, the impeller shape. The optimal design of impeller geometry is still an open issue. In this research work, the main objective is experimental investigations of the influence of the newly constructed impeller type on the fluid flow motion phenomena and energy consumption. Flow field values were evaluated using PIV measurement and the power consumption using precise torquemeter. The comparison between the Rushton turbine and a novel impeller is presented and discussed. The basis for the assessment of the intensity degree and efficiency of mixing was the analysis of velocity vectors distribution and power number. Results show that the power number for both impellers are similar but the fluid motion is quite different. The pumping capacity Qz for the novel impeller in reference to the Rushton turbine is for many cases at least one order of magnitude higher. This shows that the proposed impeller can be a very promising alternative to the classic blades and non-blades based impeller types.

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24

Xiao, Honghai, and Koji Takahashi. "Gas Dispersion in Horizontal Non-Baffled Stirred Vessel with Rushton Turbine." JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 40, no. 9 (2007): 718–23. http://dx.doi.org/10.1252/jcej.07we029.

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25

Grenville, R. K., J. J. Giacomelli, and D. A. R. Brown. "Suspension of solid particles in vessels agitated by Rushton turbine imperllers." Chemical Engineering Research and Design 109 (May 2016): 730–33. http://dx.doi.org/10.1016/j.cherd.2016.03.024.

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26

Assirelli, M., W. Bujalski, A. Eaglesham, and A. W. Nienow. "Study Of Micromixing in a Stirred Tank Using a Rushton Turbine." Chemical Engineering Research and Design 80, no. 8 (2002): 855–63. http://dx.doi.org/10.1205/026387602321143390.

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27

Assirelli, Melissa, Waldemar Bujalski, A. Eaglesham, and A. W. Nienow. "Intensifying micromixing in a semi-batch reactor using a Rushton turbine." Chemical Engineering Science 60, no. 8-9 (2005): 2333–39. http://dx.doi.org/10.1016/j.ces.2004.10.041.

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28

Derksen, Jos, and Harry E. A. Van den Akker. "Large eddy simulations on the flow driven by a Rushton turbine." AIChE Journal 45, no. 2 (1999): 209–21. http://dx.doi.org/10.1002/aic.690450202.

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29

Sharp, K. V., and R. J. Adrian. "PIV study of small-scale flow structure around a Rushton turbine." AIChE Journal 47, no. 4 (2001): 766–78. http://dx.doi.org/10.1002/aic.690470403.

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30

Patil, Pramod, and Sanjeev Kumar. "Erratum to “Breakup of drops around the edges of Rushton turbine”." Canadian Journal of Chemical Engineering 89, no. 2 (2011): 408–9. http://dx.doi.org/10.1002/cjce.20493.

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31

Glasgow, Larry A. "Fluid-Borne entities in the impeller stream of a rushton turbine." Canadian Journal of Chemical Engineering 78, no. 2 (2000): 286–92. http://dx.doi.org/10.1002/cjce.5450780202.

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32

Cudak, Magdalena. "Hydrodynamic Characteristics of Mechanically Agitated Air - Aqueous Sucrose Solutions." Chemical and Process Engineering 35, no. 1 (2014): 97–107. http://dx.doi.org/10.2478/cpe-2014-0007.

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Abstract The aim of the research presented in this paper was determination of power consumption and gas hold-up in mechanically agitated aerated aqueous low concentration sucrose solutions. Experimental studies were conducted in a vessel of diameter 0.634 m equipped with high-speed impellers (Rushton turbine, Smith turbine or A 315). The following operating parameters were changed: volumetric gas flow rate (expressed by superficial gas velocity), impeller speed, sucrose concentration and type of impeller. Based on the experiments results, impellers with a modified shape of blades, e.g. CD 6 or A 315, could be recommended for such gas-liquid systems. Power consumption was measured using strain gauge method. The results of gas holdup measurements have been approximated by an empirical relationship containing dimensionless numbers (Eq. (2)).

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33

Kysela, Bohuš, Jiří Konfršt, Ivan Fořt, and Zdeněk Chára. "CFD Simulation of the Discharge Flow from Standard Rushton Impeller." International Journal of Chemical Engineering 2014 (2014): 1–7. http://dx.doi.org/10.1155/2014/706149.

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The radial discharge jet from the standard Rushton turbine was investigated by the CFD calculations and compared with results from the Laser Doppler Anemometry (LDA) measurements. The Large Eddy Simulation (LES) approach was employed with Sliding Mesh (SM) model of the impeller motion. The obtained velocity profiles of the mean ensemble-averaged velocity and r.m.s. values of the fluctuating velocity were compared in several distances from the impeller blades. The calculated values of mean ensemble-averaged velocities are rather in good agreement with the measured ones as well as the derived power number from calculations. However, the values of fluctuating velocities are obviously lower from LES calculations than from LDA measurements.

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34

Foukrach, Mohammed, and Houari Ameur. "Effect of impeller blade curvature on the hydrodynamics and power consumption in a stirred tank." Chemical Industry and Chemical Engineering Quarterly 26, no. 3 (2020): 259–66. http://dx.doi.org/10.2298/ciceq190804003f.

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The performance of curved bladed turbines (CBTs) for the agitation of Newtonian fluids in cylindrical tanks is investigated. The efficiency of CBT is compared with that of the standard Rushton turbine. Also, effects of the blade height of the new designed impeller are highlighted. The computational fluid dynamics (CFD) study is performed to observe the axial, radial and tangential components of velocities, flow patterns and power consumption. The obtained results revealed that the increase of blade curvature reduces the power consumption. Also, a slight decrease of power number is observed in the turbulent flow regime within unbaffled tanks. In a comparison between the cases studied, the best axial circulation of fluid is given by the impeller with flat blades. The increase of the height of curved blades has generated a stronger tangential flow and enhanced the axial movement of fluid particles, but with further penalty in power input.

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35

Agarwal, Alankar, Gurveer Singh, and Akshay Prakash. "Numerical investigation of flow behavior in double-rushton turbine stirred tank bioreactor." Materials Today: Proceedings 43 (2021): 51–57. http://dx.doi.org/10.1016/j.matpr.2020.11.208.

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36

Mhawesh, Anas Malik, Basim O. Hasan, and Hussein Znad. "Hydrodynamics of Stirred Tank and Bubble Breakup Behavior Induced by Rushton Turbine." Al-Nahrain Journal for Engineering Sciences 25, no. 1 (2022): 35–43. http://dx.doi.org/10.29194/njes.25010035.

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The hydrodynamics of stirred tanks and bubble breakup are crucial in gas-liquid flows, yet this system has not been well characterized for different operating conditions. In this work, the numerical method was used to investigate the hydrodynamics of six- flat blades impeller (Rushton turbine) and the results were employed to understand the bubble breakup behavior in the stirred tank. Simulation results of predicted flow pattern, power number, and the distribution of turbulence energy generated were performed with COMSOL Multiphysics. Numerical results showed good agreement with the experimental literature. The effect of rotational speed on bubble breakup behavior, such as breakage probability, the average number of daughter bubbles, and the breakage time was investigated using the high-speed imaging method. The main finding is that the breakage process occurs in the high energy area of high turbulence intensity, which is located within a distance equal to the blade width of a radius of (15-35 mm). The breakage probability (Bp) was found to be increased by 12.61 percent for a mother bubble of 4 mm at 340 rpm, with an average fragmentation of up to 22 fragments. Furthermore, the bubble breakage time was found to decrease with increasing impeller rotational speed, with an average value of 19.8 ms.

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37

Karray, S., Z. Driss, A. Kaffel, H. Kchaou, and M. S. Abid. "Fluid-Structure Interaction in a Stirred Vessel Equipped with a Rushton Turbine." International Journal of Mechanics and Applications 2, no. 6 (2012): 129–39. http://dx.doi.org/10.5923/j.mechanics.20120206.05.

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38

Takahashi, Koji, Yositimitu Gidoh, Toshiyuki Yokota, and Toshio Nomura. "Particle-impeller impact in an agitated vessel equipped with a rushton turbine." JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 25, no. 1 (1992): 73–77. http://dx.doi.org/10.1252/jcej.25.73.

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39

Wang, Chao, Li Zhang, Zhipeng Li, Zhengming Gao, and J. J. Derksen. "Multi-particle suspension in a laminar flow agitated by a Rushton turbine." Chemical Engineering Research and Design 132 (April 2018): 831–42. http://dx.doi.org/10.1016/j.cherd.2018.02.035.

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40

Hill, D. F., K. V. Sharp, and R. J. Adrian. "Stereoscopic particle image velocimetry measurements of the flow around a Rushton turbine." Experiments in Fluids 29, no. 5 (2000): 478–85. http://dx.doi.org/10.1007/s003480000116.

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41

Michelet, S., A. Kemoun, J. Mallet, and M. Mahouast. "Space-time velocity correlations in the impeller stream of a Rushton turbine." Experiments in Fluids 23, no. 5 (1997): 418–26. http://dx.doi.org/10.1007/s003480050130.

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42

Wu, H., G. K. Patterson, and M. Van Doorn. "Distribution of turbulence energy dissipation rates in a Rushton turbine stirred mixer." Experiments in Fluids 8, no. 3-4 (1989): 153–60. http://dx.doi.org/10.1007/bf00195789.

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43

Šulc, Radek, and Pavel Ditl. "Scaling the Velocity Gradients in a Vessel Agitated by a Rushton Turbine." Chemical Engineering & Technology 40, no. 5 (2017): 938–45. http://dx.doi.org/10.1002/ceat.201600600.

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44

Hartmann, H., J. J. Derksen, and H. E. A. van den Akker. "Macroinstability uncovered in a Rushton turbine stirred tank by means of LES." AIChE Journal 50, no. 10 (2004): 2383–93. http://dx.doi.org/10.1002/aic.10211.

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45

Escudié, Renaud, and Alain Liné. "A simplified procedure to identify trailing vortices generated by a Rushton turbine." AIChE Journal 53, no. 2 (2007): 523–26. http://dx.doi.org/10.1002/aic.11082.

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Chenoun, Abdelkader, Houari Ameur, Azeddine Belalia, et al. "Numerical study of baffle parameters effect on field flow and power consumption." Structural Integrity and Life 24, no. 3 (2024): 407–13. https://doi.org/10.69644/ivk-2024-03-0407.

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The current state of research in the field of stirred tanks across diverse industrial sectors places significant focus on the design of stirred tanks, turbine blades, and baffles. This research involves a numerical investigation which focuses on examining the velocity field in a tank subjected to mechanical agitation through a Rushton turbine, particularly in turbulent flow conditions. The study utilises a Newtonian fluid as the working medium and explores the influence of various factors, including the number and placement of baffles. The investigation employs a specialised calculation code called CFX 18.0. The numerical results are analysed to determine and discuss the impact of geometrical parameters, such as the number two, three and four shape, and spacing between vertical tubular baffles, on the power characteristics obtained for each impeller type.

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Kysela, Bohuš, Jiří Konfršt, Ivan Fořt, Michal Kotek, and Zdeněk Chára. "Study of the Turbulent Flow Structure around a Standard Rushton Impeller." Chemical and Process Engineering 35, no. 1 (2014): 137–47. http://dx.doi.org/10.2478/cpe-2014-0010.

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Abstract The velocity field around the standard Rushton turbine was investigated by the Laser Doppler Anemometry (LDA) and Particle Image Velocimetry (PIV) measurements. The mean ensembleaveraged velocity profiles and root mean square values of fluctuations were evaluated at two different regions. The first one was in the discharge stream in the radial direction from the impeller where the radial flow is dominant and it is commonly modelled as a swirling turbulent jet. The validity range of the turbulent jet model was studied. The second evaluated region is under the impeller where flow seems to be at first sight rather rigorous but obtained results show nonnegligible values of fluctuation velocity.

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Altway, A., S. Winardi, and M. Rachimoellah. "Kajian Eksperimental Pengaruh Micromixing Terhadap Reaksi Parallel Kompetitif Di Dalam Sistem Reaktor Alir Tangki Teraduk." REAKTOR 8, no. 1 (2017): 12. http://dx.doi.org/10.14710/reaktor.8.1.12-17.

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Penelitian ini bertujuan untuk mempelajari pengaruh letak atau posisi feed masuk, kecepatan pengadukan, waktu tinggal rata-rata dan tipe impeller terhadap tingkat micromixing dan yield reaksi parallel di dalam tangki pengaduk secara kontinyu. Sistem yang digunakan adalah tangki silindris beralas datar yang dilengkapi dengan 4 buah baffle dengan diameter T= 0,2 m dan H= T. Impeler yang digunakan adalah inclined fan turbine, fan turbin, atau Rushton disc turbin 6 blade dengan diameter 6 cm, dengan jarak 1/3H dari dasar tangki. Reaksi parallel kompetitif yang dipelajari adalah reaksi netralisasi NaH2BO3 dengan H2SO4 dan reaksi oksidasi reduksi iodide-iodate yang menghasilkan iodine. Sedangkan variabel percobaan adalah waktu tinggal yang divariasi dengan cara variasi laju alir inlet campuran NaH2BO3, KI dan KIO3 sebesar 1 liter/menit; 1,5 liter/ menit dan 2 liter/menit. Konsentrasi NaH2BO3, KI dan KIO3 di dalam campuran adalah : 0,0909 M; 0,0117 M; dan 0,0023 M. Laju alir larutan yang mengandung 0,3 M H2SO4 adalah 0,045 liter/menit; 0,068 liter/menit dan 0,09 liter/menit. Kecepatan putar impeller divariasi 100,150, 200, 250, dan 300 rpm. Posisi pemasukan larutan divariasi H2SO4 yaitu : di dekat impeler, di daerah bawah impeler, dan di dekat permukaan. Hasil penelitian yang didapatkan, bahwa semakin besar kecepatan putar impeler dan semakin lama waktu tinggal dalam reaktor yield iodine yang dihasilkan semakin kecil. Posisi feed yang terbaik adalah terletak di dekat impeler dengan koordinat z` = 0,33 dan r` = 1,4. Penelitian ini juga menyimpulkan bahwa impeller inclined fan turbine memberikan kinerja pencampuran yang lebih baik dibandingkan jenis impeller Rusthon turbine dan fan turbine.Kata kunci : micromixing, yield iodine, bilangan segregasi, reaktor alir tangki teraduk

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Bašić, Anita, Mario Nikola Mužek, Lea Kukoč-Modun, and Sandra Svilović. "Competitive Heavy Metal Removal from Binary Solution." Kemija u industriji 69, no. 9-10 (2020): 465–71. http://dx.doi.org/10.15255/kui.2020.038.

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The removal of copper and cobalt ions from binary metal solutions on zeolite NaX by ion exchange process was investigated. Experiments were conducted in unbaffled glass reactor with a Rushton turbine as a stirrer. The dependence of ion exchange kinetics and the amount exchanged were tested using different initial concentrations of metal ions in mixtures. The results obtained indicate that the removal efficiency depends on the initial heavy metal concentrations in binary solutions. Experimental kinetics data were analysed using Ritchie and Weber-Morris models. According to AARD values, the rate in this study was reaction-controlled.

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Iyer, Devarajan Krishna, and Ajey Kumar Patel. "Periodic Behaviour of Mean Velocity Fields in Rushton Turbine (RT) Driven Stirred Tank." International Journal of Mathematical, Engineering and Management Sciences 4, no. 6 (2019): 1341–51. http://dx.doi.org/10.33889/ijmems.2019.4.6-105.

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The present study predicts the periodic behavior of mean velocity fields from the properly verified and validated CFD model to determine the extent of vortex and turbulent activity in a baffled tank stirred by standard six bladed Rushton Turbine. This region includes most of the vortex and turbulent action that controls the mixing and mass transfer processes in the stirred tank. The complexity of periodicity of mean radial and tangential velocities in the radial direction and mean axial velocity in the axial direction is used to fix the proper radial as well as axial extents of the vortex generated by RT. The extent of flow periodicity in the present stirred tank configuration is confined within a cylindrical region around the impeller of radius 0.753 times the impeller diameter and a height of 0.323 times the impeller diameter above and below the impeller center plane.

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