CFD modelling of condensers for freeze-drying processes ...

2013-12-19 · The aim of the present research is the development of a computational tool for investigating condensation processes and equipment with particular attention to freeze-dryers. These condensers in fact are usually operated at very low pressures, making it difficult to experimentally acquire quantitative knowledge of all the variables involved. Mathematical modelling and CFD (Computational Fluid ...

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2017-3-17 · Zhengyu Z, Wenling C, Tao T, et al. A novel AAO-SBSPR process based on phosphorus mass balance for nutrient removal and phosphorus recovery from municipal wastewater[J]. Water Research, 2018, 144:763-773. DOI: 10.1016/j.watres.2018.08.058

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Effects of superficial gas velocity on process dynamics in ...

2014-9-2 · Present work analyzes the flow hydrodynamics and mass transfer mechanisms in double Rushton and CD-6 impeller on wide range (0.0075–0.25 m/s) of superficial gas velocity (v g) in a gas-liquid phase bioreactor by employing computational fluid dynamics (CFD) technique. The volume averaged velocity magnitude and dissipation rate are found higher with increasing superficial gas …

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Competition, Concentration and ...

2021-8-3 · Growing concentration may hinder competition, reduce the availability of key supplies and equipment, and diminish vendors'' incentives for innovation and performance in government contracts. 21 jun 2020 this study assesses the impact on competitiveness of banking takeovers in australia, to inform regulators and contribute to the mergers and .

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2019-6-30 · . doi: 10.13433/j.cnki.1003-8728.20190270. , . , 214122. : (11802105) ...

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Experimental and numerical investigation of structure and ...

2018-2-14 · In chemical industry, flows often occur in nontransparent equipment, for example in steel pipelines and vessels. Magnetic resonance imaging is a suitable approach to visualize the flow, which cannot be performed with classical optical techniques, and obtain quantitative data in such cases.

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Spatial Variation of Pressure in the Lyophilization ...

2016-5-5 · The flow physics in the product chamber of a freeze dryer involves coupled heat and mass transfer at different length and time scales. The low-pressure environment and the relatively small flow velocities make it difficult to quantify the flow structure experimentally. The current work presents the three-dimensional computational fluid dynamics (CFD) modeling for vapor flow in a laboratory ...

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DISAT

2021-7-16 · ISSN 0392-839X. Shiea, Mohsen; Buffo, Antonio; Vanni, Marco; Marchisio, Daniele (2019) On the realizability and boundedness of the moments in a bubbly gas-liquid pipe flow. . In: 10th International Conference on Multiphase Flow, Rio de Janeiro, Brazil, 19 - 24 May, 2019.

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2021-8-13 ·  ›› 2020, Vol. 39 ›› Issue (6): 2312-2326. doi: 10.16085/j.issn.1000-6613.2020-0144 • : • 1, 2 (), 1, 3, 1, 2, 1, 2

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CFD-PBM Coupled Simulation of Liquid-Liquid Dispersions in ...

2019-3-3 · A coupled numerical code of the Euler-Euler model and the population balance model (PBM) of the liquid-liquid dispersions in a spray fluidized bed extractor (SFBE) has been performed to investigate the hydrodynamic behavior. A classes method (CM) and two representatively numerical moment-based methods, namely, a quadrature method of moments (QMOM) and a direct quadrature method of …

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An improved and efficient finite volume scheme for ...

In this work, a finite volume scheme for the numerical solution of bivariate pure aggregation population balance equations on non-uniform meshes is derived. The new method has a simple mathematical...

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Multidimensional population balance model for the ...

2012-3-5 · This approach was first proposed by McGraw (1997) for the simulation of aerosol dynamics; Marchisio et al., 2003a, Marchisio et al., 2003b extended and validated this method for aggregation-breakage problems. Moreover, it was shown that the coupling of the population balance with a commercial CFD code was possible and resulted in reasonable ...

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DISAT

2021-7-20 · Frungieri, Graziano; Vanni, Marco (2015) Dynamics of shear induced aggregation through a combined Monte Carlo-Stokesian dynamics approach. In: 15th Conference of the International Association of Colloid and Interface Scientists, Mainz (Germany), 24-29 May 2015

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Daniele MARCHISIO | Professor (Full) | PhD in Chemical ...

Daniele MARCHISIO, Professor (Full) | Cited by 6,610 | of Politecnico di Torino, Turin (polito) | Read 190 publications | Contact Daniele MARCHISIO

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Role of turbulent shear rate distribution in aggregation ...

Equipment; Student theses ... by expertise, name or affiliation. Role of turbulent shear rate distribution in aggregation and breakage processes. D L Marchisio, M Soos, J Sefcik, M ... aggregation and breakage of fine particles in turbulent flow conditions is investigated using computational fluid dynamics (CFD) and population balance modeling ...

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Fluid Dynamics Effects on Particle Formation in ...

Aggregation has a strong influence on the final product quality at moderate to high particle loadings (typically from 1 to 10% in terms of the solid volume fraction) that correspond to the standard operating conditions of industrial crystallization equipment. The role of fluid dynamics and turbulence in crystallization and precipitation ...

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Simulation of polydisperse multiphase systems using ...

2013-10-1 · The test case on which the approach is demonstrated is that experimentally investigated by Diaz et al., 2008, Diaz et al., 2008 and Cachaza Gianzo (2011).Most of the validation refers to a simulated apparatus of 0.2 m wide, 1.8 m high and 0.04 m deep polymethyl-methacrylate bubble column.The column was filled with tap water (i.e. continuous phase) up to 0.45 m from the bottom at …

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Computational Models for Polydisperse Particulate and ...

Marco Ferrari. Antonello A Barresi. Daniele L Marchisio. A computational and modeling approach is used to highlight the key factors that affect polymer nanoparticles (NP) formation in flash nano ...

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COUPLING CFD AND DEEP LEARNING TO BUILD DATA …

32nd International Conference on Parallel Computational Fluid Dynamics May 11-13 2020, Nice FRANCE COUPLING CFD AND DEEP LEARNING TO BUILD DATA-DRIVEN MODELS: TWO CASE-STUDIES IN PROCESS ENGINEERING A. MARCATO*, M. FERRARI, G. BOCCARDO*, A. BUFFO, M. VANNI, D. MARCHISIO * Politecnico di Torino Department of Applied Science and Technology

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CFD-PBM Simulation and PIV Measurement of Liquid–Liquid ...

2019-9-16 · The mixer settler is widely employed in the extraction and recycling of battery materials. The improvement of the separation efficiency is one of the most important issues. In order to investigate the effect of agitating speed on the flow characteristics and settling performance, both computational fluid dynamics coupled population balance model simulations and experiments with particle image ...

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Use of computational fluid dynamics for improving freeze ...

2018-8-1 · This manuscript shows how computational models, mainly based on Computational Fluid Dynamics (CFD), can be used to simulate different parts of an industrial freeze-drying equipment and to properly design them; in particular in this part the duct connecting the chamber with the condenser, with its valves, is considered, while the chamber design and its effect on drying kinetics have been ...

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Used construction equipment, agricultural equipment and ...

Heavy & Contractor Equipment, Vehicles. by Western Construction Auctions Inc. Online. Aug 6th, 10:00 - 19:00 CDT. Heavy Construction Equipment, Commercial Trucks and Trailers, Agricultural Equipment and Contractors Equipment. Featured.

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Population Balance Modeling of Turbulent Mixing for ...

2005-3-1 · Here we propose that population balance modeling of fragmentation-coalescence simulates the size distribution of dispersed fluid elements in turbulent mixing. The interfacial area between dispersed and bulk fluids controls the transfer of a scalar molecular property, for example, mass or heat, from the dispersed fluid elements.

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Use of computational fluid dynamics for improving freeze ...

2018-8-1 · Two different equipment sizes (a small-scale apparatus and an industrial-scale apparatus, see Fig. 1, Fig. 2) have been investigated to assess the influence of the design parameters on the fluid dynamics and on the pressure distribution in the drying chamber.For the small-scale apparatus three different positions for the duct have been considered: in the centre of the rear wall, on one side of ...

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Numerical simulation of spray coalescence in an Eulerian ...

2008-3-1 · Phys. 194 (2004) 505-543]. The first key feature of the paper is the application of direct quadrature method of moments (DQMOM) introduced by Marchisio and Fox [D.L. Marchisio, R.O. Fox, Solution of population balance equations using the direct quadrature method of moments, J. Aerosol Sci. 36 (2005) 43-73] to the Williams spray equation.

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OPTIMIZATION OF CRYSTALLIZATION PROCESS IN AN …

2020-4-22 · computational fluid dynamics (CFD) with the population balance models (PBM) is a powerful tool in evaluating the design of particulate related equipment such as crystallizers. In this work, a CFD based population balance model is tested in a continuous draft tube baffle (DTB) crystallizer, which is an

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WHEELS [Campagnolo Marchisio Mavic Shimano American ...

Please, before ordering, send a request for availability. Thank you. Crossmax SL Ultimate 25 29 Built for Olympic athletes, the new Crossmax SL Ultimate is the most dynamic XC wheelset ever created by Mavic. Lighter, stiffer, faster—it''s..

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Mathematical modelling of expanded bed adsorption – a ...

2018-1-31 · Abstract Expanded bed adsorption (EBA) emerged in the early 1990s in an attempt to integrate the clarification, capture and initial product concentration/purification ...

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A CFD‐DEM approach to study the breakup of fractal ...

The Canadian Journal of Chemical Engineering, published by Wiley on behalf of The Canadian Society for Chemical Engineering, is the forum for publication of high quality original research articles, new theoretical interpretation or experimental findings and critical reviews in the science or industrial practice of chemical and biochemical processes.

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PhD in Chemical Engineering Research Title: Multi-scale ...

Supervisor Prof. Daniele Marchisio ... The design and optimization of the equipment, and identification of the best operating conditions, requires advanced mathematical modelling tools, such as computational fluid dynamics (CFD). This area has concentrated mostly on homogeneous bubbly flows, but ...

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Modeling and simulation of turbulent polydisperse gas ...

Population balance modeling is an established framework to describe the dynamics of particle populations in disperse phase systems found in a broad field of industrial, civil and medical applications.

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DATE 2021

2021-2-2 · Rida El-Allami, Alberto Marchisio, Muhammad Shafique and Ihsen Alouani. 6.3.2 09:45 - 10:00 CET. GNNUnlock: Graph Neural Networks-based Oracle-less Unlocking Scheme for Provably Secure Logic Locking Lilas Alrahis, Satwik Patnaik, Faiq Khalid, Muhammad Abdullah Hanif, Hani Saleh, Muhammad Shafique and Ozgur Sinanoglu. IP5_5.1 10:00 - 10:01 CET

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Advances in Mixing Research: 16th European Conference on ...

2019-7-22 · Advanced computational tools, such as computational fluid dynamics (CFD) codes, are being increasingly adopted by engineers for the design, scale‐up, and intensification of industrial equipment. Nonetheless, the characterization of interphase gas‐liquid mass transfer in stirred equipment can still be a challenging task, this being ...

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Sadhan¯ ¯a Vol. 38, Part 6, December 2013, pp. …

2019-4-9 · Sadhan¯ ¯a Vol. 38, Part 6, December 2013, pp. 1219–1239. c Indian Academy of Sciences CFD modelling of condensers for freeze-drying processes MIRIAM PETITTI∗, ANTONELLO A BARRESI and DANIELE L MARCHISIO Dipartimento di Scienza Applicata e Tecnologia, Istituto di Ing.

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