Flow And Mixing Optimization Of An Existing Biogas Plant Through Cfd Simulation And Velocity Measurements Prepared
DOWNLOAD
Download Flow And Mixing Optimization Of An Existing Biogas Plant Through Cfd Simulation And Velocity Measurements Prepared PDF/ePub or read online books in Mobi eBooks. Click Download or Read Online button to get Flow And Mixing Optimization Of An Existing Biogas Plant Through Cfd Simulation And Velocity Measurements Prepared book now. This website allows unlimited access to, at the time of writing, more than 1.5 million titles, including hundreds of thousands of titles in various foreign languages. If the content not found or just blank you must refresh this page
Flow And Mixing Optimization Of An Existing Biogas Plant Through Cfd Simulation And Velocity Measurements Prepared
DOWNLOAD
Author : Obada Yaghi
language : en
Publisher: GRIN Verlag
Release Date : 2019-04-17
Flow And Mixing Optimization Of An Existing Biogas Plant Through Cfd Simulation And Velocity Measurements Prepared written by Obada Yaghi and has been published by GRIN Verlag this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-04-17 with Technology & Engineering categories.
Bachelor Thesis from the year 2016 in the subject Engineering - Mechanical Engineering, grade: 94%, German Jordanian University (hosted by Hamburg University of Technology), language: English, abstract: This research project enables further development and improvement of the mixing efficiency in an existing biogas plant, by utilizing CFD simulation as well as a newly developed flow sensor in addition to supportive laboratory tests. The flow was analyzed considering the following variables: The mixing time, the Dry Matter (DM) content, the positioning of the agitators and how it can be related to the amount of velocity dead-zones. The velocity measurements took place at the biogas plant of the company Ardestorfer Bioenergie GmbH in the district of Buxtehude. The current plant capacity is approximately 1.6 MWel using animals manure, energy crops as well as agricultural residuals. In order to be able to perform the CFD simulation, a complete 3D model had to be done of the examined fermenter and the mixing agitators. Moreover, the current setup including fluid properties, boundary and initial conditions had to be taken into consideration. Velocity measurements were used as a validation approach for the simulation results, furthermore to acquire an overview of the flow behavior over the investigated mixing period. Firstly, it was found that at higher DM content the flow seemed to be more stable, and the velocity values get quite higher at the examined points. Moreover, at higher DM content (9.35% compared with 8.8%) the velocity dead-zones seemed to be approximately 70% less. Secondly, another approach was considered to improve the mixing and to minimize the dead-zones by changing the position of the main agitator. The new scenario showed fewer dead-zones by approximately 65% according to the CFD model. Thirdly, at all scenarios and setups, the flow seemed to reach the maximum possible velocity, and rather motion distribution after 150-180 seconds. Showing no remarkable improvement after this period. The mentioned findings were concluded based on comparisons between different velocity measurements as well as CFD simulation results at different operating conditions and setups. Being able to offer proper recommendations for a better energy efficiency in terms of lower energy consumption and better mixing all over the fermenter.
Computational Fluid Dynamics
DOWNLOAD
Author : Adela Ionescu
language : en
Publisher: BoD – Books on Demand
Release Date : 2018-02-14
Computational Fluid Dynamics written by Adela Ionescu and has been published by BoD – Books on Demand this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-02-14 with Computers categories.
This book is the result of a careful selection of contributors in the field of CFD. It is divided into three sections according to the purpose and approaches used in the development of the contributions. The first section describes the "high-performance computing" (HPC) tools and their impact on CFD modeling. The second section is dedicated to "CFD models for local and large-scale industrial phenomena." Two types of approaches are basically contained here: one concerns the adaptation from global to local scale, - e.g., the applications of CFD to study the climate changes and the adaptations to local scale. The second approach, very challenging, is the multiscale analysis. The third section is devoted to "CFD in numerical modeling approach for experimental cases." Its chapters emphasize on the numerical approach of the mathematical models associated to few experimental (industrial) cases. Here, the impact and the importance of the mathematical modeling in CFD are focused on. It is expected that the collection of these chapters will enrich the state of the art in the CFD domain and its applications in a lot of fields. This collection proves that CFD is a highly interdisciplinary research area, which lies at the interface of physics, engineering, applied mathematics, and computer science.
Bioreactors
DOWNLOAD
Author : Carl-Fredrik Mandenius
language : en
Publisher: John Wiley & Sons
Release Date : 2016-02-16
Bioreactors written by Carl-Fredrik Mandenius and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-02-16 with Science categories.
In this expert handbook both the topics and contributors are selected so as to provide an authoritative view of possible applications for this new technology. The result is an up-to-date survey of current challenges and opportunities in the design and operation of bioreactors for high-value products in the biomedical and chemical industries. Combining theory and practice, the authors explain such leading-edge technologies as single-use bioreactors, bioreactor simulators, and soft sensor monitoring, and discuss novel applications, such as stem cell production, process development, and multi-product reactors, using case studies from academia as well as from industry. A final section addresses the latest trends, including culture media design and systems biotechnology, which are expected to have an increasing impact on bioreactor design. With its focus on cutting-edge technologies and discussions of future developments, this handbook will remain an invaluable reference for many years to come.
Cfd Simulation Of Multicomponent Gas Flow Through Porous Media
DOWNLOAD
Author : Chethan Mohan Kumar
language : en
Publisher:
Release Date : 2013-09
Cfd Simulation Of Multicomponent Gas Flow Through Porous Media written by Chethan Mohan Kumar and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-09 with categories.
Master's Thesis from the year 2013 in the subject Engineering - Computer Engineering, grade: none, University of Wuppertal, course: Computational Mechanics of Engineering - Computational Fluid Dynamics, language: English, abstract: The objective of this thesis is to develop a generic CFD solver to simulate multicomponent gas transport involving multiscales. A comparative study between the mixture and Eulerian approach for multicomponent flows is done. Eulerian approach where every component has its own characteristic velocity is used in this work with reasons stated. Inter-component momentum exchange term has been modelled using Maxwell-Stefan relations. A semi-heuristic drag term for modelling porous drag is used. Temperature transport for the mixture is developed by considering an ensemble averaging method of all components for the mixture. Volume averaged form for all the equations is applied by considering fluid in presence of porous media as a pseudo-homogeneous medium. All the equations and terms mentioned are implemented in the solver. An open source CFD software OpenFOAM has been used to develop the solver. Capability of the solver to simulate diffusion dominated mass transfer has been established by using a Loschmidt tube which involves diffusion of a ternary mixture. Accuracy of 0.5% is observed for the case in comparison with analytical solution for the problem in one dimension. Validation of porous drag and energy transport has been done by using a fully developed laminar flow over two parallel plates and comparing the Nusselt numbers. The Nusselt numbers of 8.85 and 9.13 for porous and non-porous zones were observed compared to the literature values of 7.54 and 9.8. The reason for the deviations are stated.
Computational Fluid Dynamics For Engineers
DOWNLOAD
Author : Bengt Andersson
language : en
Publisher: Cambridge University Press
Release Date : 2011-12-22
Computational Fluid Dynamics For Engineers written by Bengt Andersson and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-12-22 with Technology & Engineering categories.
Computational fluid dynamics, CFD, has become an indispensable tool for many engineers. This book gives an introduction to CFD simulations of turbulence, mixing, reaction, combustion and multiphase flows. The emphasis on understanding the physics of these flows helps the engineer to select appropriate models to obtain reliable simulations. Besides presenting the equations involved, the basics and limitations of the models are explained and discussed. The book combined with tutorials, project and power-point lecture notes (all available for download) forms a complete course. The reader is given hands-on experience of drawing, meshing and simulation. The tutorials cover flow and reactions inside a porous catalyst, combustion in turbulent non-premixed flow, and multiphase simulation of evaporation spray respectively. The project deals with design of an industrial-scale selective catalytic reduction process and allows the reader to explore various design improvements and apply best practice guidelines in the CFD simulations.
Process Design Manual For Sludge Treatment And Disposal
DOWNLOAD
Author : Brown and Caldwell
language : en
Publisher:
Release Date : 1979
Process Design Manual For Sludge Treatment And Disposal written by Brown and Caldwell and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1979 with Sewage categories.
Mild Combustion Modelling Challenges Experimental Configurations And Diagnostic Tools
DOWNLOAD
Author : Alessandro Parente
language : en
Publisher: Frontiers Media SA
Release Date : 2021-11-26
Mild Combustion Modelling Challenges Experimental Configurations And Diagnostic Tools written by Alessandro Parente and has been published by Frontiers Media SA this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-11-26 with Technology & Engineering categories.
Gas Cyclones And Swirl Tubes
DOWNLOAD
Author : Alex C. Hoffmann
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-11-11
Gas Cyclones And Swirl Tubes written by Alex C. Hoffmann and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-11-11 with Technology & Engineering categories.
This book has been conceived to provide guidance on the theory and design of cyclone systems. Forthose new to the topic, a cyclone is, in its most basic form, a stationary mechanical device that utilizes centrifugal force to separate solid or liquid particles from a carrier gas. Gas enters near the top via a tangential or vaned inlet, which gives rise to an axially descending spiral of gas and a centrifugal force field that causes the incoming particles to concentrate along, and spiral down, the inner walls of the separator. The thus-segregated particulate phase is allowed to exit out an underflow pipe while the gas phase constricts, and - in most separators - reverses its axial direction of flow and exits out a separate overflow pipe. Cyclones are applied in both heavy and light industrial applications and may be designed as either classifiers or separators. Their applications are as plentiful as they are varied. Examples include their use in the separation or classification of powder coatings, plastic fines, sawdust, wood chips, sand, sintered/powdered meta!, plastic and meta! pellets, rock and mineral cmshings, carbon fines, grain products, pulverized coal, chalk, coal and coal ash, catalyst and petroleum coke fines, mist entrained off of various processing units and liquid components from scmbbing and drilling operations. They have even been applied to separate foam into its component gas and liquid phases in recent years.
Biogas Production
DOWNLOAD
Author : Nagamani Balagurusamy
language : en
Publisher: Springer Nature
Release Date : 2021-01-11
Biogas Production written by Nagamani Balagurusamy and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-01-11 with Science categories.
This book focuses on biogas production by anaerobic digestion, which is the most popular bioenergy technology of today. Using anaerobic digestion for the production of biogas is a sustainable approach that simultaneously also allows the treatment of organic waste. The energy contained in the substrate is released in the form of biogas, which can be employed as a renewable fuel in diverse industrial sectors. Although biogas generation is considered an established process, it continues to evolve, e.g. by incorporating modifications and improvements to increase its efficiency and its downstream applications. The chapters of this book review the progress made related to feedstock, system configuration and operational conditions. It also addresses microbial pathways utilized, as well as storage, transportation and usage of biogas. This book is an up-to-date resource for scientists and students working on improving biogas production.
Process Intensification
DOWNLOAD
Author : David Reay
language : en
Publisher: Butterworth-Heinemann
Release Date : 2013-06-05
Process Intensification written by David Reay and has been published by Butterworth-Heinemann this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-06-05 with Technology & Engineering categories.
Process Intensification: Engineering for Efficiency, Sustainability and Flexibility is the first book to provide a practical working guide to understanding process intensification (PI) and developing successful PI solutions and applications in chemical process, civil, environmental, energy, pharmaceutical, biological, and biochemical systems. Process intensification is a chemical and process design approach that leads to substantially smaller, cleaner, safer, and more energy efficient process technology. It improves process flexibility, product quality, speed to market and inherent safety, with a reduced environmental footprint. This book represents a valuable resource for engineers working with leading-edge process technologies, and those involved research and development of chemical, process, environmental, pharmaceutical, and bioscience systems. No other reference covers both the technology and application of PI, addressing fundamentals, industry applications, and including a development and implementation guide Covers hot and high growth topics, including emission prevention, sustainable design, and pinch analysis World-class authors: Colin Ramshaw pioneered PI at ICI and is widely credited as the father of the technology