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Fluid Dynamics of Turbulent Fluidized Beds for Geldart’s Group B Particles (Volume 20) (English shop)
Tom Wytrwat (Author)Preview
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Table of Contents, PDF (37 KB)
An in-depth experimental study of the fluid dynamics of turbulent fluidized beds with particles of Geldart’s Group B was carried out. For this purpose, fluidization behavior was investigated in different fluidized bed plants having diameters in the range of 0.05 m to 1 m.
Pressure fluctuation analysis has been used as an identification tool for the turbulent fluidized bed regime. Different fluidization conditions have been investigated by variation of the fluidized bed properties, the bed material properties, and the gas properties. Based on the measured data, a correlation predicting the transition velocity from bubbling to turbulent fluidization is introduced. To investigate the local flow structure, capacitance probe measurements have been carried out. Using this measurement technique, local solids concentrations and properties of rising bubbles have been determined and analyzed.
Finally, an empiric fluid dynamic model was developed using the local measurement data. It is mainly based on capacitance probe measurements and shows high accuracy in comparison to pressure data.
| ISBN-13 (Hard Copy) | 9783736975712 |
| ISBN-13 (eBook) | 9783736965713 |
| Language | English |
| Page Number | 200 |
| Lamination of Cover | matt |
| Edition | 1. |
| Book Series | SPE-Schriftenreihe |
| Volume | 20 |
| Publication Place | Göttingen |
| Place of Dissertation | Hamburg |
| Publication Date | 2022-02-15 |
| General Categorization | Dissertation |
| Departments |
Engineering
Technical mechanics Mechanical and process engineering Allgemeine Verfahrenstechnik |
| Keywords | acceleration effects, bed material, bubble, bubble phase, bubble properties, bubble rise, bubble shape, bubble size, bubble velocity, bubbling fluidization, capacitance probe, concentration profile, drag coefficient, entrainment, fast fluidization, flow structure, fluid dynamics, fluidized bed, fluidized bed frequency, frequency analysis, Geldart, group B, modeling, one dimensional, phase hold-up, pierced length, pressure fluctuations, regime identification, short-circuiting, solids circulation rate, solids concentration, superficial gas velocity, suspension phase, transition velocity, turbulent, turbulent fluidization, turbulent fluidized bed model, two-phase theory, vertical bubble size, void properties, Beschleunigungseffekte, Bettmaterial, Blase, Blasenphase, Blaseneigenschaft, Blasenaufstieg, Blasenform, Blasengröße, Blasengeschwindigkeit, blasenbildende Fluidisation, kapazitive Sonde, Konzentrationsprofil, Widerstandsbeiwert, Austrag, schnelle Fluidisation, Strömungsstruktur, Strömungsmechanik, Wirbelschicht, Wirbelschichtfrequenz, Frequenzanalyse, Geldart, Gruppe B, Modellierung, eindimensional, Phasenanteil, Durchstoßlänge, Druckschwankung, Regimeidentifikation, Bypass, Feststoffzirkulationsrate, Feststoffkonzentration, Gasleerrohrgeschwindigkeit, Suspensionsphase, Übergangsgeschwindigkeit, turbulent, turbulente Fluidisation, turbulentes Wirbelschichtmodell, Zweiphasentheorie, vertikale Blasengröße, Leerraumeigenschaften |
| URL to External Homepage | www.tuhh.de/spe |
