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  • 1
    UID:
    (DE-101)1300649984
    Format: Online-Ressource
    ISSN: 1521-4125
    Content: Abstract: A 3‐D two‐fluid CFD model in the Eulerian‐Eulerian framework was developed to predict the hydrodynamics and heat and mass transfer of sieve trays. Interaction between the two phases occurs via interphase momentum and heat and mass transfer. The tray geometries are based on the large rectangular tray of Dribika and Biddulph and FRI commercial‐scale sieve tray of Yanagi and Sakata. In this work a CFD simulation is developed to give predictions of the fluid flow patterns, hydraulics, and mass transfer efficiency of distillation sieve trays including a downcomer. The main objective has been to find the extent to which CFD can be used as a design and prediction tool for real behavior, concentration and temperature distributions, and efficiencies of industrial trays. Despite the use of simple correlations for closure models, the efficiencies obtained are very close to experimental data. The results show that values of point efficiency vary with position on the tray because of variation of affecting parameters, such as velocities, temperature and concentration gradients, and interfacial area. The simulation results show that CFD can be used as a powerful tool in tray design and analysis, and can be considered as a new approach for efficiency calculations and as a new tool for testing mixing models in both phases. CFD can be used as a “virtual experiment” to simulate tray behavior under operating conditions.
    Content: A 3‐D two‐fluid CFD simulation is developed to predict the fluid flow patterns, hydraulics, and mass transfer efficiency of distillation sieve trays including a downcomer. Despite the use of simple correlations for closure models, the efficiencies obtained are very close to the experimental data. CFD, a powerful tool in tray design and analysis, is a new approach for efficiency calculations and testing mixing models in both phases.
    In: volume:29
    In: number:3
    In: year:2006
    In: pages:326-335
    In: extent:10
    In: Chemical engineering & technology, Weinheim : Wiley-VCH Verl.-Ges., 1987-, 29, Heft 3 (2006), 326-335 (gesamt 10), 1521-4125
    Language: English
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  • 2
    UID:
    (DE-627)221090541
    Format: 21 S
    Edition: [Microfiche]
    Series Statement: Reports / WAYNE STATE UNIV DETROIT MI CSC-81-025
    Language: Undetermined
    Keywords: Bericht
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  • 3
    UID:
    (DE-101)1051509408
    Format: Online-Ressource
    Edition: 1. Aufl.
    ISBN: 9783659530135 , 3659530131
    Note: Lizenzpflichtig. - Vom Verlag als Druckwerk on demand und/oder als E-Book angeboten
    Language: English
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  • 4
    Book
    Book
    Paris : Ministère de transport
    UID:
    (DE-627)253680352
    Format: 156 S
    Series Statement: Rapport de recherches / Ministère de l'équipement et du logement. Laboratoires des ponts et chaussées 18
    Language: Undetermined
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  • 5
    Online Resource
    Online Resource
    Cham : Springer International Publishing | Cham : Springer International Publishing AG
    UID:
    (DE-603)451270088
    Format: 1 Online-Ressource (XVIII, 280 Seiten) , 41 illus., 22 illus. in color.
    Edition: 1st ed. 2019
    ISBN: 9783030184728 , 3030184722
    Series Statement: Understanding Complex Systems
    Additional Edition: Erscheint auch als Druck-Ausgabe Rahimi Tabar, M. Reza Analysis and Data-Based Reconstruction of Complex Nonlinear Dynamical Systems Cham : Springer International Publishing, 2019 9783030184711
    Additional Edition: 9783030184711
    Additional Edition: 9783030184735
    Additional Edition: 9783030184742
    Language: English
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  • 6
    UID:
    (DE-605)HT020447940
    Format: xviii, 280 Seiten , Illustrationen
    Edition: corrected publication
    ISBN: 9783030184711
    Series Statement: Understanding Complex Systems
    Additional Edition: Erscheint auch als Online-Ausgabe 9783030184728
    Language: English
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  • 7
    UID:
    (DE-602)b3kat_BV046083808
    Format: 1 Online-Ressource (xviii, 280 Seiten) , Illustrationen, Diagramme (teilweise farbig)
    ISBN: 9783030184728
    Series Statement: Understanding complex systems
    Additional Edition: Erscheint auch als Druck-Ausgabe ISBN 978-3-030-18471-1
    Language: English
    Subjects: Mathematics
    RVK:
    URL: Volltext  (URL des Erstveröffentlichers)
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  • 8
    UID:
    (DE-627)126238871
    In: Bioremediation and bioprocessing, Columbus, Ohio : ACS Div. of Petroleum Chemistry, 1993, (1993), 1
    In: year:1993
    In: number:1
    Language: Undetermined
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  • 9
    UID:
    (DE-627)1751908011
    Format: 1 online resource (290 pages)
    ISBN: 9783030184728
    Series Statement: Understanding Complex Systems Ser.
    Content: Intro -- Preface -- Contents -- 1 Introduction -- 1.1 Time Series of Complex Systems -- 1.2 Stochastic Continuous Time Series -- 1.3 Time Series with Jump Discontinuity -- 1.4 Microstructural (Measurement) Noise -- 1.5 Intermittency -- References -- 2 Introduction to Stochastic Processes -- 2.1 Introduction -- 2.2 Statistical Description of Time Series -- 2.2.1 The Probability Density -- 2.2.2 Joint and Conditional Probability Distribution Functions -- 2.3 Classification of Stochastic Processes -- 2.3.1 Purely Random Processes -- 2.3.2 Markov Processes -- 2.3.3 Higher Order Processes -- 2.4 Stationary Processes -- 2.5 The Chapman-Kolmogorov Equation and the Necessary … -- 2.6 Continuous Stochastic Markov Processes -- References -- 3 Kramers-Moyal Expansion and Fokker-Planck Equation -- 3.1 Kramers-Moyal Expansion -- 3.2 Pawula Theorem and Fokker-Planck Equation -- 3.3 Short-Time Propagator of Fokker-Planck Equation in One Dimension -- 3.4 Master Equation -- References -- 4 Continuous Stochastic Processes -- 4.1 Stochastic Continuity -- 4.1.1 Stochastic Mean-Square Continuity -- 4.1.2 Lindeberg's Continuity Condition for Markov Processes -- 4.2 Stochastic Differentiability -- 4.2.1 Mean-Square Differentiability of Stochastic Processes -- 4.2.2 General Condition for Non-differentiability of Stochastic Processes -- 4.3 Description of a Continuous Stochastic Process by a Fokker-Planck Equation -- 4.4 Stationary Solution of the Fokker-Planck Equation and the Potential Function -- References -- 5 The Langevin Equation and Wiener Process -- 5.1 The Langevin Equation -- 5.2 The Kramers-Moyal Coefficients of Wiener Process -- 5.3 Conditional Probability Distribution Function of the Wiener Process -- 5.4 Statistical Moments of the Wiener Process -- 5.5 Markov Property of the Wiener Process -- 5.6 Independence of Increments of the Wiener Process.
    Note: Description based on publisher supplied metadata and other sources
    Additional Edition: 9783030184711
    Additional Edition: Erscheint auch als Druck-Ausgabe 9783030184711
    Language: English
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  • 10
    UID:
    (DE-627)1671010558
    Format: 1 Online-Ressource (XVIII, 280 Seiten) , Illustrationen, Diagramme
    ISBN: 9783030184728
    Series Statement: Understanding Complex Systems
    Content: 1 Introduction -- 2 Introduction to Stochastic Processes -- 3 Kramers-Moyal Expansion and Fokker-Planck Equation -- 4 Continuous Stochastic Process -- 5 The Langevin Equation and Wiener Process -- 6 Stochastic Integration, It^o and Stratonovich Calculi -- 7 Equivalence of Langevin and Fokker-Planck Equations -- 8 Examples of Stochastic Calculus -- 9 Langevin Dynamics in Higher Dimensions -- 10 Levy Noise Driven Langevin Equation and its Time Series-Based Reconstruction -- 11 Stochastic Processes with Jumps and Non-Vanishing Higher-Order Kramers-Moyal Coefficients -- 12 Jump-Diffusion Processes -- 13 Two-Dimensional (Bivariate) Jump-Diffusion Processes -- 14 Numerical Solution of Stochastic Differential Equations: Diffusion and Jump-Diffusion Processes -- 15 The Friedrich-Peinke Approach to Reconstruction of Dynamical Equation for Time Series: Complexity in View of Stochastic Processes -- 16 How To Set Up Stochastic Equations For Real-World Processes: Markov-Einstein Time Scale -- 17 Reconstruction of Stochastic Dynamical Equations: Exemplary Stationary Diffusion and Jump-Diffusion Processes -- 18 The Kramers-Moyal Coefficients of Non-Stationary Time series in The Presence of Microstructure (Measurement) Noise -- 19 Influence of Finite Time Step in Estimating of the Kramers-Moyal Coefficients -- 20 Distinguishing Diffusive and Jumpy Behaviors in Real-World Time Series -- 21 Reconstruction of Langevin and Jump-Diffusion Dynamics From Empirical Uni- and Bivariate Time Series -- 22 Applications and Outlook -- 23 Epileptic Brain Dynamics
    Content: This book focuses on a central question in the field of complex systems: Given a fluctuating (in time or space), uni- or multi-variant sequentially measured set of experimental data (even noisy data), how should one analyse non-parametrically the data, assess underlying trends, uncover characteristics of the fluctuations (including diffusion and jump contributions), and construct a stochastic evolution equation? Here, the term "non-parametrically" exemplifies that all the functions and parameters of the constructed stochastic evolution equation can be determined directly from the measured data. The book provides an overview of methods that have been developed for the analysis of fluctuating time series and of spatially disordered structures. Thanks to its feasibility and simplicity, it has been successfully applied to fluctuating time series and spatially disordered structures of complex systems studied in scientific fields such as physics, astrophysics, meteorology, earth science, engineering, finance, medicine and the neurosciences, and has led to a number of important results. The book also includes the numerical and analytical approaches to the analyses of complex time series that are most common in the physical and natural sciences. Further, it is self-contained and readily accessible to students, scientists, and researchers who are familiar with traditional methods of mathematics, such as ordinary, and partial differential equations. The codes for analysing continuous time series are available in an R package developed by the research group Turbulence, Wind energy and Stochastic (TWiSt) at the Carl von Ossietzky University of Oldenburg under the supervision of Prof. Dr. Joachim Peinke. This package makes it possible to extract the (stochastic) evolution equation underlying a set of data or measurements
    Additional Edition: 9783030184711
    Additional Edition: Erscheint auch als Druck-Ausgabe 978-3-030-18471-1
    Additional Edition: Erscheint auch als Druck-Ausgabe Tabar, M. Reza Rahimi Analysis and data-based reconstruction of complex nonlinear dynamical systems Cham, Switzerland : Springer, 2019 9783030184711
    Language: English
    Subjects: Mathematics
    RVK:
    Keywords: Komplexes System ; Nichtlineares System ; Stochastischer Prozess
    URL: Cover
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