Academic literature on the topic 'Stirred vessel'

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Journal articles on the topic "Stirred vessel"

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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 tangent
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Li, Liang Chao. "CFD-DPM Modeling of Gas-Liquid Flow in a Stirred Vessel." Advanced Materials Research 550-553 (July 2012): 979–83. http://dx.doi.org/10.4028/www.scientific.net/amr.550-553.979.

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Gas-liquid flow in a stirred vessel was simulated numerically with computational fluid dynamics(CFD). Gas was treated as discrete phase and described by discrete phase model (DPM), while the liquid was considered as a continuum and solved under Euler reference frame. The liquid velocity, gas holdup and gas residence time distribution in the stirred vessel were predicted. The simulation results show that gas dispersion in the stirred vessel is very non-uniformity and high gas holdup is found in the centre of the stirred vessel and vortexes while relatively low in bottom region and region betwee
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Hill, Esther P. "Inhibition of carbonic anhydrase by plasma of dogs and rabbits." Journal of Applied Physiology 61, no. 1 (1986): 389. http://dx.doi.org/10.1152/jappl.1986.61.1.389-r.

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Page 191: Esther P. Hill. “Inhibition of carbonic anhydrase by plasma of dogs and rabbits.” Page 192: the eighth through the eleventh sentences of paragraph 2 should read: One milliliter of reaction solution (see below) was placed in a small reaction vessel and stirred with a magnetic stirrer. One-tenth milliliter of CO2-saturated saline was added....
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BESSHO, Nagayasu, Shoji TANIGUCHI, and Atsushi KIKUCHI. "Fluid Flow in a Gas-stirred Vessel." Tetsu-to-Hagane 71, no. 9 (1985): 1117–24. http://dx.doi.org/10.2355/tetsutohagane1955.71.9_1117.

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MISUMI, Ryuta, Kazuhiko NISHI, and Meguru KAMINOYAMA. "Solid-liquid Mixing in a Stirred Vessel." JAPANESE JOURNAL OF MULTIPHASE FLOW 28, no. 4 (2014): 437–43. http://dx.doi.org/10.3811/jjmf.28.437.

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Liang, Ru Quan, Fu Sheng Yan, Jun Hong Ji, and Ji Cheng He. "Numerical Simulation of Particle Mixing Feature for a Gas-Liquid-Solid Three Phase Flow in an Impeller-Driven Stirred Vessel." Applied Mechanics and Materials 130-134 (October 2011): 869–72. http://dx.doi.org/10.4028/www.scientific.net/amm.130-134.869.

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In this work, numerical simulations have been conducted to investigate the particle mixing feature in a stirred vessel driven by an impeller. The Eulerian multi-fluid model has been employed along with the standard k–ε turbulence model to simulate the gas-liquid-solid three-phase flow in the stirred vessel. The effects of impeller speed and immersion depth of impeller on the particle distribution are discussed. The results show that the particle volume fractions nearby the vessel bottom are large on the vicinity of the side walls of the vessel and small in the vessel middle region at different
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Hasal, P., J. L. Montes, H. C. Boisson, and I. Fořt. "Macro-instabilities of velocity field in stirred vessel:." Chemical Engineering Science 55, no. 2 (2000): 391–401. http://dx.doi.org/10.1016/s0009-2509(99)00334-6.

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Aris, Rutherford. "Parallel Gray–Scott reactions in a stirred vessel." J. Chem. Soc., Faraday Trans. 92, no. 16 (1996): 2839–42. http://dx.doi.org/10.1039/ft9969202839.

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Machon, V., and M. Jahoda. "Liquid Homogenization in Aerated Multi-Impeller Stirred Vessel." Chemical Engineering & Technology 23, no. 10 (2000): 869–76. http://dx.doi.org/10.1002/1521-4125(200010)23:10<869::aid-ceat869>3.0.co;2-b.

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Holden, P. J., M. Wang, R. Mann, F. J. Dickin, and R. B. Edwards. "Imaging stirred-vessel macromixing using electrical resistance tomography." AIChE Journal 44, no. 4 (1998): 780–90. http://dx.doi.org/10.1002/aic.690440403.

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Dissertations / Theses on the topic "Stirred vessel"

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Parker, Katrina Rayanne. "Effect of breakage on crystal shape distribution in a stirred vessel." Master's thesis, Mississippi State : Mississippi State University, 2005. http://library.msstate.edu/etd/show.asp?etd=etd-04082005-101246.

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Yeoh, Seen Lim. "Large eddy simulation of turbulent flow and mixing in a stirred vessel." Thesis, King's College London (University of London), 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.410224.

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Bonhomme, Adrien. "Numerical study of laminar and turbulent flames propagating in a fan-stirred vessel." Phd thesis, Toulouse, INPT, 2014. http://oatao.univ-toulouse.fr/12019/1/Bonhomme_adrien.pdf.

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Fossil energy is widely used since the 1900s to satisfy the global increasing energy demand. However, combustion is a process releasing pollutants such as CO2 and NOx. One of the major challenges of the 21th century is to reduce these emissions and car manufacturers are involved in this race. To increase fuel efficiency of piston engines, some technical solutions are developed such as ‘downsizing’. It consists in reducing the engine size while maintaining its performances using a turbocharger to increase the trapped mass in the combustion chamber. Unfortunately, downsizing can lead to abnormal
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Khan, Firoz R. "Investigation of turbulent flows and instabilities in a stirred vessel using particle image velocimetry." Thesis, Loughborough University, 2005. https://dspace.lboro.ac.uk/2134/14171.

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Extensive use of stirred vessels in the process industries for various operations has attracted researchers to study the mixing mechanisms and its effects on the processes. Among the various flow-measuring methods, Particle Image Velocimetry (PlV) technique has become more popular in comparison to LDA and HW A methods because of its ability to provide instantaneous velocity fields. The present study uses this technique to investigate the flowfields and turbulent properties in a 290mm vessel stirred by Rushton Disc turbine (RDT) and Pitched blade turbine (PBT) impellers. Angle-resolved instanta
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Bucciarelli, Elia. "Liquid-liquid dispersion in mechanically agitated vessel." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018.

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L’argomento trattato è lo studio di due liquidi immiscibili all’interno di un recipiente agitato. Una nuova tecnica di misura delle dimensioni delle particelle viene presentata, la tecnica sperimentata è non invasiva in quanto tutti gli strumenti di misura sono stati posizionati esternamente al vessel. Il recipiente conteneva una dispersione di olio siliconico in acqua, i test sono stati condotti in assenza di coalescenza. Il sistema è agitato in un primo test da una girante Rushton e in un secondo da una girante con denti; esso consiste in un recipiente cilindrico dal diametro T=300mm in v
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Sanfilippo, Giorgia. "Turbulence in not fully filled vessel." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020.

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In many chemical and biotechnological processes, mixing represents one of the fundamental unit operations, object of interest in chemical, pharmaceutical and food industries. Mixing efficiency is strongly influenced by the design and operating conditions chosen. The flow field study is important to understand which mechanism takes place in the fluid inside the stirred tank, in particular to characterize the property of the fluid and, to do that, a widely investigation techniques are used. This experimental work was carried out during the “Erasmus + for traineeship” project carried out at the
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Ducci, Andrea. "Direct measurement of the viscous dissipation rate of turbulent kinetic energy in a stirred vessel with two-point LDA." Thesis, King's College London (University of London), 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.487276.

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Rapisarda, Andrea. "Hydrodynamic characterization of two/three phase flow regimes in stirred tank." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019.

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Questo progetto di ricerca riguarda i processi di miscelazione in sistemi multifase meccanicamente agitati(regime turbolento). I sistemi studiati sono: gas-liquido, solido-liquido e gas-solido-liquido. Lo scopo è quello di analizzare il movimento delle particelle solide all'interno di un recipiente agitato, calcolandone la velocità(n) alle quali si è ottenuto lo stato di estrazione delle particelle(nJD), della completa dispersione(nCD) e del loading(nloading), attraverso l'uso di due diversi valori di diametro delle particelle. Le misure sono state effettuate utilizzando due giranti su un alb
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Carrillo, De Hert Sergio. "Drop size distribution analysis of mechanically agitated liquid-liquid dispersions." Thesis, University of Manchester, 2018. https://www.research.manchester.ac.uk/portal/en/theses/drop-size-distribution-analysis-of-mechanically-agitated-liquidliquid-dispersions(02a0af25-3d1c-47e0-8a4e-8b2cc98cdaea).html.

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Many daily life products consist of mixtures of oil and water. When an immiscible material is dispersed an interface in-between the two phases is created which gives rise to rheological phenomena which can be exploited for product formulation; this is the case in products such as hand-creams and food products. Furthermore emulsions are used to transport hydrophobic materials, for example, many pharmaceuticals are injected as emulsions into the bloodstream. The performance of such products depends on their microstructure, which is determined by its formulation and how its constituents are mixed
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Wittmer, Stephan. "Caractérisation du mélange dans une cuve agitée par trajectographie." Vandoeuvre-les-Nancy, INPL, 1996. http://www.theses.fr/1996INPL037N.

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Dans cette thèse, nous essayons de développer de nouveaux outils pour la caractérisation des processus de mélange et ceci dans une approche lagrangienne. L’objectif est de trouver de l'information utile contenue dans la longue trajectoire d'une particule représentant un élément de fluide d'un écoulement turbulent. Les écoulements étudiés sont ceux induits par des turbines Rushton et à Pales inclinées dans une cuve agitée de 20 litres. Un dispositif expérimental utilisant des systèmes vidéo et d'analyse d'images a été développé pour suivre une petite particule, neutre de densité, dans trois dim
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Books on the topic "Stirred vessel"

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Cerilli, Joseph R. Oxygen uptake in water in a top blown-bottom stirred cylindrical vessel. McMaster University, 1997.

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Louret, Sylvain. Tomography applied to solid-liquid mixing in a plant-scale stirred vessel. UMIST, 1997.

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Halim, Iskandar. Adsorption study of shell catenex oil-11 in water solution onto powdered activated carbon type darco in a closed stirred batch vessel. UMIST, 1996.

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Togatorop, A. Computational fluid mixing in stirred vessels. UMIST, 1995.

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Pearse, B. A. Eduction of structured elements in the impeller flows of stirred vessels. University ofBirmingham, 1988.

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Brinkel, J. Network-of-zones modelling of solid-liquid mixing in stirred vessels. UMIST, 1994.

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Grau, H. P. Gas-liquid mixing in stirred vessels: Measurements of local surface disengagement. UMIST, 1997.

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Yaakob, Z. Gas-liquid mixing in stirred vessels: Visualisation studies on a 2-D emulator. UMIST, 1995.

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Man, Chi Cheung. Drop sizes and coalescence rates in oil-in-aqueous and aqueous-in-oil dispersions in stirred vessels. University of Birmingham, 1998.

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Book chapters on the topic "Stirred vessel"

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Brucato, A., F. Grisafi, G. Micale, and L. Rizzuti. "CFD Simulation of Stirred Vessel Reactors." In Nonlinear Dynamics and Control in Process Engineering — Recent Advances. Springer Milan, 2002. http://dx.doi.org/10.1007/978-88-470-2208-9_6.

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Makino, T., T. Kaise, N. Ohmura, and K. Kataoka. "Laser-optical observation of chaotic mixing structure in a stirred vessel." In Laser Techniques for Fluid Mechanics. Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/978-3-662-08263-8_24.

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Ilchenko, Volodymyr, Reinhold Maurus, and Thomas Sattelmayer. "Influence of the Operating Conditions on the Bubble Characteristics in an Aerated Stirred Vessel." In Bubbly Flows. Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-642-18540-3_24.

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Khopkar, Avinash R., and Vivek V. Ranade. "STIRRED VESSELS." In Chemical Engineering in the Pharmaceutical Industry. John Wiley & Sons, Inc., 2019. http://dx.doi.org/10.1002/9781119600800.ch13.

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Mayinger, F., and O. Feldmann. "Bubble dispersion in aerated stirred vessels." In Bubbly Flows. Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-642-18540-3_25.

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Lee, K. C., N. A. Borrett, and M. Yianneskis. "Turbulence Structure and Isotropy in Stirred Vessels." In Mixing and Crystallization. Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-017-2290-2_3.

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Khopkar, Avinash R., and Vivek V. Ranade. "Stirred Vessels: Computational Modeling of Multiphase Flows and Mixing." In Chemical Engineering in the Pharmaceutical Industry. John Wiley & Sons, Inc., 2010. http://dx.doi.org/10.1002/9780470882221.ch15.

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Gaddis, Edward S. "N3 Heat Transfer and Power Consumption in Stirred Vessels." In VDI Heat Atlas. Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-540-77877-6_106.

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Drewer, G. R., N. Ahmed, and G. J. Jameson. "An Optimum Concentration for the Suspension of Solids in Stirred Vessels." In Mixing and Crystallization. Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-017-2290-2_8.

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Geisler, R. K., C. Buurman, and A. B. Mersmann. "Determination of the Mean Specific Power Input in Stirred Vessels with Suspensions." In Fluid Mechanics and Its Applications. Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-015-7973-5_13.

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Conference papers on the topic "Stirred vessel"

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Mohiuddin, A. K. M., Nabeel Adeyemi, and Ahmad Tariq Jameel. "Numerical Modelling of Mixed Flow Impeller in Stirred Vessel." In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-89368.

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Flow characteristics of a single mixed flow impeller in baffled and unbaffled vessel have been experimentally and numerically investigated at 600 rpm. The mean, radial and axial velocity components obtained using particle image velocimetry (PIV) were compared with three turbulence models (κ-ε, κ-ε shear stress transport (sst) and Reynold’s stress model (RSM)) based on the Reynold’s averaging Navier-Stokes equation at two planes, above (x/R = 0.46) and below (x/R = 0.38) the impeller. Numerical results of mean and axial velocity for the RSM turbulence model compared better to PIV below the impe
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Qi, Xueyu, Ting Wu, Yiming Chen, et al. "Experimental Investigation on Flow Field Characteristics by Drag Reducing Agent Additives in Stirred Vessel." In ASME 2019 Pressure Vessels & Piping Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/pvp2019-93415.

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Abstract In this paper, experimental investigation on two oil-soluble DRAs were carried out in stirred vessel by standard six-blade Rushton, based on the application of particle image velocimeter (PIV). Two DRAs (1# and 2#) with different concentration from 3 ppm to 50 ppm were added into diesel respectively, and speed of impeller speed was set 400 rpm. Flow field characteristics including turbulence intensity, turbulent kinetic energy, energy dissipation rate influenced by those additives in stirred vessel were study. It was found that inhibition effect of turbulence intensity of the two DRAs
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Wang, Peng, Thomas Reviol, Haikun Ren, and Martin Böhle. "CFD and Experiment Investigation of the Mixing Characteristics of Non-Newtonian Fluids in a Stirred Vessel." In ASME 2018 5th Joint US-European Fluids Engineering Division Summer Meeting. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/fedsm2018-83107.

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The mixing performance of a novel design propeller fixed at a position with the angle of −10° combine the inference of the variety of rotation speed and rheology properties were investigated using an ultrasonic Doppler anemometer (UDA) and CFD simulation to investigate the flow patterns and the power consumption in a mixing vessel. The fluids of interest in this research are CMC fluids, which is a type of Walocel CRT 40,000PA powder was added into water to prepare the solutions with the mass concentration which performed shear thinning non-Newtonian fluid properties. As the viscosity of the no
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Hammad, Khaled J., and Ivana M. Milanovic. "Effect of Asymmetric Jet Placement on Turbulent Flow Structure Inside a Jet-Stirred Reactor." In ASME 2010 International Mechanical Engineering Congress and Exposition. ASMEDC, 2010. http://dx.doi.org/10.1115/imece2010-39738.

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Particle Image Velocimetry (PIV) was used to investigate the turbulent flow structure inside a jet-stirred cylindrical vessel. The submerged jet issued vertically downward from a long pipe ensuring fully developed turbulent flow conditions at the outlet. The Reynolds number based on jet mean exit velocity was 15,000. The effect of symmetric and asymmetric nozzle placement within the vessel on the resulting flow patterns was also studied. The measured turbulent velocity fields are presented using Reynolds decomposition into mean and fluctuating components, which, for the selected flow configura
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Bakker, Andre´. "Modeling Turbulence in Stirred Vessels: A Review and Recent Developments." In ASME/JSME 2004 Pressure Vessels and Piping Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/pvp2004-3102.

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Prediction of the mixing of multi-component fluids is important in many chemical process applications. Although laminar mixing is a complicated process per se (involving multi-component diffusion coefficients, for example), there is a far greater challenge in predicting mixing in turbulent flows because of their intrinsic, chaotic nature. In turbulent flows, large-scale eddies with coherent structures are mainly responsible for the mixing of passive scalars. The large-scale eddies embody themselves in the form of identifiable and organized distributions of vorticity. In addition, the mixing pr
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Brady, Michael R., Demetri P. Telionis, and Pavlos P. Vlachos. "Turbulence Characteristics in a Rushton Stirring Vessel Measured via Time Resolved DPIV." In ASME 2006 2nd Joint U.S.-European Fluids Engineering Summer Meeting Collocated With the 14th International Conference on Nuclear Engineering. ASMEDC, 2006. http://dx.doi.org/10.1115/fedsm2006-98528.

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Stirred vessels are devices that find extensive industrial applications particularly in mineral and chemical industries. Interactions of solid particles and/or bubbles and particles depend on the characteristics of turbulent flow. In many analytical models, the rate of collision is a function of turbulence dissipation. It has been known that dissipation levels are much higher in the neighborhood of the agitating mechanism, in our case the Rushton impeller. In this paper we use time-resolved DPIV to measure the velocity field with a spatial resolution down to 100 μm, and a frequency resolution
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Spall, Robert, Nephi Jones, and Clinton Staheli. "Computational Fluid Dynamics Analysis of Fluid Mixing in Single Use Bioreactors." In ASME 2010 International Mechanical Engineering Congress and Exposition. ASMEDC, 2010. http://dx.doi.org/10.1115/imece2010-39701.

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CFD calculations were performed for a series of stirred, single use bioreactor vessels using both rotating reference frame and sliding mesh model approaches. Comparisons of quantities such as flow patterns, power numbers, and mixing times are presented. Calculations to predict mass transfer coefficients for a sparged 250L vessel were also performed using the rotating reference frame model. Results presented include those from a series of single, fixed bubble diameter calculations, and those which employed a population balance model consisting of 9 discrete bubble diameters.
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Papadopoulos, George, and Khaled J. Hammad. "Time-Resolved PIV Measurements Within a Triple Impeller Stirred-Tank." In ASME/JSME 2003 4th Joint Fluids Summer Engineering Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/fedsm2003-45295.

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Time-resolved velocity measurements using particle image velocimetry (PIV) were performed in a triple impeller stirred-tank to evaluate flow structure and flow dynamics. Using a high framing rate digital camera and a high pulse rate laser, the flow field at a planar location along the diameter of the tank was over-sampled to capture the time evolution of vortical structures in the flow. Several tests were performed for rotational speeds ranging from 175 RPM to 1575 RPM. The working fluid was glycerin at ambient conditions. Time averaged results over several blade passage cycles reveal that the
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Basara, Branislav, Ales Alajbegovic, and Decan Beader. "Calculation of Flow in Mixing Vessels With Various Turbulence Models." In ASME 2004 Heat Transfer/Fluids Engineering Summer Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/ht-fed2004-56260.

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The paper presents calculations of flow in a mixing vessel stirred by a six-blade Rushton impeller. Mathematical model used in computations is based on the ensemble averaged conservation equations. An efficient finite-volume method based on unstructured grids with rotating sliding parts composed of arbitrary polyhedral elements is used together with various turbulence models. Besides the standard k-ε model which served as a reference, k-ε-v2 model (Durbin, 1995) and the recently proposed hybrid EVM/RSM turbulence model (Basara &amp; Jakirlic, 2003) were used in the calculations. The main aim o
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Kling, Kerstin, and Dieter Mewes. "Visualization of Micro- and Macromixing in Liquid Mixtures of Reacting Components (Keynote Paper)." In ASME/JSME 2003 4th Joint Fluids Summer Engineering Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/fedsm2003-45216.

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Micromixing is visualized inside a stirred vessel by using two different optical measurement techniques, the optical tomography and the Planar Laser Induced Fluorescence technique (PLIF). In order to distinguish between macro- and micromixing, a mixture of two dyes is injected into the mixing vessel. One of the dyes is an inert dye whereas the second dye is undergoing a fast chemical reaction with the vessel content. The distribution of the inert dye serves as a tracer for the macromixing but does not predicate the mixing quality on the nano scale. The chemical reaction requires mixing on the
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