Direct Numerical Simulation and Multiscale Modelling

Direct Numerical Simulation and Multiscale Modelling
Author: Kai Luo
Publsiher: Academic Press
Total Pages: 329
Release: 2021-04
ISBN 10: 9780128174890
ISBN 13: 0128174897
Language: EN, FR, DE, ES & NL

Direct Numerical Simulation and Multiscale Modelling Book Review:

Direct Numerical Simulation and Multiscale Modelling provides a unified description of DNS, LES and RANS in the context of broader modelling and simulation practice. The relevance of these techniques to flow, turbulence, combustion and multiphysics is explained to help readers apply them to a wide range of research topics. Introductory sections help readers get up to speed with the theories of turbulence, combustion, and multiphysics, along with the basics of simulation and modelling. This is followed by thorough treatments of the numerical methods, boundary conditions, and specific modelling approaches for different purposes. Applications in fields including aerospace, biomedical, and chemical engineering are investigated where appropriate. This is the ideal guide for readers interested in direct numerical simulation, or modelling/simulation of turbulence more generally, who need an overview of the methods available and advice on how to select and implement the correct one.

Multiscale Modeling Simulation and Visualization and Their Potential for Future Aerospace Systems

Multiscale Modeling  Simulation and Visualization and Their Potential for Future Aerospace Systems
Author: Anonim
Publsiher: Unknown
Total Pages: 442
Release: 2002
ISBN 10:
ISBN 13: PSU:000049491036
Language: EN, FR, DE, ES & NL

Multiscale Modeling Simulation and Visualization and Their Potential for Future Aerospace Systems Book Review:

Direct Numerical Simulations of Gas Liquid Multiphase Flows

Direct Numerical Simulations of Gas   Liquid Multiphase Flows
Author: Grétar Tryggvason,Ruben Scardovelli,Stéphane Zaleski
Publsiher: Cambridge University Press
Total Pages: 329
Release: 2011-03-10
ISBN 10: 1139496700
ISBN 13: 9781139496704
Language: EN, FR, DE, ES & NL

Direct Numerical Simulations of Gas Liquid Multiphase Flows Book Review:

Accurately predicting the behaviour of multiphase flows is a problem of immense industrial and scientific interest. Modern computers can now study the dynamics in great detail and these simulations yield unprecedented insight. This book provides a comprehensive introduction to direct numerical simulations of multiphase flows for researchers and graduate students. After a brief overview of the context and history the authors review the governing equations. A particular emphasis is placed on the 'one-fluid' formulation where a single set of equations is used to describe the entire flow field and interface terms are included as singularity distributions. Several applications are discussed, showing how direct numerical simulations have helped researchers advance both our understanding and our ability to make predictions. The final chapter gives an overview of recent studies of flows with relatively complex physics, such as mass transfer and chemical reactions, solidification and boiling, and includes extensive references to current work.

Numerical Techniques for Direct and Large Eddy Simulations

Numerical Techniques for Direct and Large Eddy Simulations
Author: Xi Jiang,Choi-Hong Lai
Publsiher: CRC Press
Total Pages: 276
Release: 2016-04-19
ISBN 10: 9781420075793
ISBN 13: 1420075799
Language: EN, FR, DE, ES & NL

Numerical Techniques for Direct and Large Eddy Simulations Book Review:

Compared to the traditional modeling of computational fluid dynamics, direct numerical simulation (DNS) and large-eddy simulation (LES) provide a very detailed solution of the flow field by offering enhanced capability in predicting the unsteady features of the flow field. In many cases, DNS can obtain results that are impossible using any other means while LES can be employed as an advanced tool for practical applications. Focusing on the numerical needs arising from the applications of DNS and LES, Numerical Techniques for Direct and Large-Eddy Simulations covers basic techniques for DNS and LES that can be applied to practical problems of flow, turbulence, and combustion. After introducing Navier–Stokes equations and the methodologies of DNS and LES, the book discusses boundary conditions for DNS and LES, along with time integration methods. It then describes the numerical techniques used in the DNS of incompressible and compressible flows. The book also presents LES techniques for simulating incompressible and compressible flows. The final chapter explores current challenges in DNS and LES. Helping readers understand the vast amount of literature in the field, this book explains how to apply relevant numerical techniques for practical computational fluid dynamics simulations and implement these methods in fluid dynamics computer programs.

Physical Multiscale Modeling and Numerical Simulation of Electrochemical Devices for Energy Conversion and Storage

Physical Multiscale Modeling and Numerical Simulation of Electrochemical Devices for Energy Conversion and Storage
Author: Alejandro A. Franco,Marie Liesse Doublet,Wolfgang G. Bessler
Publsiher: Springer
Total Pages: 249
Release: 2015-11-12
ISBN 10: 1447156773
ISBN 13: 9781447156772
Language: EN, FR, DE, ES & NL

Physical Multiscale Modeling and Numerical Simulation of Electrochemical Devices for Energy Conversion and Storage Book Review:

The aim of this book is to review innovative physical multiscale modeling methods which numerically simulate the structure and properties of electrochemical devices for energy storage and conversion. Written by world-class experts in the field, it revisits concepts, methodologies and approaches connecting ab initio with micro-, meso- and macro-scale modeling of components and cells. It also discusses the major scientific challenges of this field, such as that of lithium-ion batteries. This book demonstrates how fuel cells and batteries can be brought together to take advantage of well-established multi-scale physical modeling methodologies to advance research in this area. This book also highlights promising capabilities of such approaches for inexpensive virtual experimentation. In recent years, electrochemical systems such as polymer electrolyte membrane fuel cells, solid oxide fuel cells, water electrolyzers, lithium-ion batteries and supercapacitors have attracted much attention due to their potential for clean energy conversion and as storage devices. This has resulted in tremendous technological progress, such as the development of new electrolytes and new engineering designs of electrode structures. However, these technologies do not yet possess all the necessary characteristics, especially in terms of cost and durability, to compete within the most attractive markets. Physical multiscale modeling approaches bridge the gap between materials’ atomistic and structural properties and the macroscopic behavior of a device. They play a crucial role in optimizing the materials and operation in real-life conditions, thereby enabling enhanced cell performance and durability at a reduced cost. This book provides a valuable resource for researchers, engineers and students interested in physical modelling, numerical simulation, electrochemistry and theoretical chemistry.

Multiscale and Multiresolution Approaches in Turbulence

Multiscale and Multiresolution Approaches in Turbulence
Author: Pierre Sagaut
Publsiher: World Scientific
Total Pages: 448
Release: 2013
ISBN 10: 1848169876
ISBN 13: 9781848169876
Language: EN, FR, DE, ES & NL

Multiscale and Multiresolution Approaches in Turbulence Book Review:

The book aims to provide the reader with an updated general presentation of multiscale/multiresolution approaches in turbulent flow simulations. All modern approaches (LES, hybrid RANS/LES, DES, SAS) are discussed and recast in a global comprehensive framework. Both theoretical features and practical implementation details are addressed. Some full scale applications are described, to provide the reader with relevant guidelines to facilitate a future use of these methods.

Annual Research Briefs

Annual Research Briefs
Author: Center for Turbulence Research (U.S.)
Publsiher: Unknown
Total Pages: 329
Release: 2011
ISBN 10:
ISBN 13: UCAL:B5619119
Language: EN, FR, DE, ES & NL

Annual Research Briefs Book Review:

Multiscale Modelling of Soft Matter

Multiscale Modelling of Soft Matter
Author: Philip Earis,Madelaine Chapman
Publsiher: Royal Society of Chemistry
Total Pages: 492
Release: 2010
ISBN 10:
ISBN 13: UCBK:C103286009
Language: EN, FR, DE, ES & NL

Multiscale Modelling of Soft Matter Book Review:

This volume focuses on multiscale modelling: crossing the boundaries from atomistic studies of relatively small systems, to tackle larger systems where the properties of interest can only be studied at longer distances and longer time-scales. Many of the ideas of multiscale modelling cross traditional boundaries and this meeting brought together scientists from several different fields of modelling to discuss state of the art modelling of membranes, colloids, polymers and proteins. The following themes were included in the discussion: - Polymers: including microphase separation and self-assembly - Colloids: including the prediction of phases and phase diagrams - Mesophases: including liquid crystals, novel phases, self-assembled structures and the links between molecular structure and bulk properties - Membranes: including collective processes in lipid and surfactant systems - Methodology for multiscale simulations: including methods for moving between scales and for bridging different time and length scales

Scientific and Technical Aerospace Reports

Scientific and Technical Aerospace Reports
Author: Anonim
Publsiher: Unknown
Total Pages: 329
Release: 1992
ISBN 10:
ISBN 13: MINN:30000005901271
Language: EN, FR, DE, ES & NL

Scientific and Technical Aerospace Reports Book Review:

Studying Turbulence Using Numerical Simulation Databases

Studying Turbulence Using Numerical Simulation Databases
Author: Anonim
Publsiher: Unknown
Total Pages: 329
Release: 2002
ISBN 10:
ISBN 13:
Language: EN, FR, DE, ES & NL

Studying Turbulence Using Numerical Simulation Databases Book Review:

Multiscale Modeling in Biomechanics and Mechanobiology

Multiscale Modeling in Biomechanics and Mechanobiology
Author: Suvranu De,Wonmuk Hwang,Ellen Kuhl
Publsiher: Springer
Total Pages: 286
Release: 2014-10-10
ISBN 10: 1447165993
ISBN 13: 9781447165996
Language: EN, FR, DE, ES & NL

Multiscale Modeling in Biomechanics and Mechanobiology Book Review:

Presenting a state-of-the-art overview of theoretical and computational models that link characteristic biomechanical phenomena, this book provides guidelines and examples for creating multiscale models in representative systems and organisms. It develops the reader's understanding of and intuition for multiscale phenomena in biomechanics and mechanobiology, and introduces a mathematical framework and computational techniques paramount to creating predictive multiscale models. Biomechanics involves the study of the interactions of physical forces with biological systems at all scales – including molecular, cellular, tissue and organ scales. The emerging field of mechanobiology focuses on the way that cells produce and respond to mechanical forces – bridging the science of mechanics with the disciplines of genetics and molecular biology. Linking disparate spatial and temporal scales using computational techniques is emerging as a key concept in investigating some of the complex problems underlying these disciplines. Providing an invaluable field manual for graduate students and researchers of theoretical and computational modelling in biology, this book is also intended for readers interested in biomedical engineering, applied mechanics and mathematical biology.

Numerical Simulations of Coupled Problems in Engineering

Numerical Simulations of Coupled Problems in Engineering
Author: Sergio R. Idelsohn
Publsiher: Springer
Total Pages: 422
Release: 2014-05-09
ISBN 10: 3319061364
ISBN 13: 9783319061368
Language: EN, FR, DE, ES & NL

Numerical Simulations of Coupled Problems in Engineering Book Review:

This book presents and discusses mathematical models, numerical methods and computational techniques used for solving coupled problems in science and engineering. It takes a step forward in the formulation and solution of real-life problems with a multidisciplinary vision, accounting for all of the complex couplings involved in the physical description. Simulation of multifaceted physics problems is a common task in applied research and industry. Often a suitable solver is built by connecting together several single-aspect solvers into a network. In this book, research in various fields was selected for consideration: adaptive methodology for multi-physics solvers, multi-physics phenomena and coupled-field solutions, leading to computationally intensive structural analysis. The strategies which are used to keep these problems computationally affordable are of special interest, and make this an essential book.

Multiscale Modeling for Process Safety Applications

Multiscale Modeling for Process Safety Applications
Author: Arnab Chakrabarty,Sam Mannan,Tahir Cagin
Publsiher: Butterworth-Heinemann
Total Pages: 444
Release: 2015-11-29
ISBN 10: 0123972833
ISBN 13: 9780123972835
Language: EN, FR, DE, ES & NL

Multiscale Modeling for Process Safety Applications Book Review:

Multiscale Modeling for Process Safety Applications is a new reference demonstrating the implementation of multiscale modeling techniques on process safety applications. It is a valuable resource for readers interested in theoretical simulations and/or computer simulations of hazardous scenarios. As multi-scale modeling is a computational technique for solving problems involving multiple scales, such as how a flammable vapor cloud might behave if ignited, this book provides information on the fundamental topics of toxic, fire, and air explosion modeling, as well as modeling jet and pool fires using computational fluid dynamics. The book goes on to cover nanomaterial toxicity, QPSR analysis on relation of chemical structure to flash point, molecular structure and burning velocity, first principle studies of reactive chemicals, water and air reactive chemicals, and dust explosions. Chemical and process safety professionals, as well as faculty and graduate researchers, will benefit from the detailed coverage provided in this book. Provides the only comprehensive source addressing the use of multiscale modeling in the context of process safety Bridges multiscale modeling with process safety, enabling the reader to understand mapping between problem detail and effective usage of resources Presents an overall picture of addressing safety problems in all levels of modeling and the latest approaches to each in the field Features worked out examples, case studies, and a question bank to aid understanding and involvement for the reader

Ames Research Center Research and Technology 2000

Ames Research Center Research and Technology 2000
Author: Anonim
Publsiher: Unknown
Total Pages: 197
Release: 2002
ISBN 10:
ISBN 13: NASA:31769000642879
Language: EN, FR, DE, ES & NL

Ames Research Center Research and Technology 2000 Book Review:

Modeling and Simulation of Turbulent Combustion

Modeling and Simulation of Turbulent Combustion
Author: Santanu De,Avinash Kumar Agarwal,Swetaprovo Chaudhuri,Swarnendu Sen
Publsiher: Springer
Total Pages: 661
Release: 2017-12-12
ISBN 10: 9811074100
ISBN 13: 9789811074103
Language: EN, FR, DE, ES & NL

Modeling and Simulation of Turbulent Combustion Book Review:

This book presents a comprehensive review of state-of-the-art models for turbulent combustion, with special emphasis on the theory, development and applications of combustion models in practical combustion systems. It simplifies the complex multi-scale and nonlinear interaction between chemistry and turbulence to allow a broader audience to understand the modeling and numerical simulations of turbulent combustion, which remains at the forefront of research due to its industrial relevance. Further, the book provides a holistic view by covering a diverse range of basic and advanced topics—from the fundamentals of turbulence–chemistry interactions, role of high-performance computing in combustion simulations, and optimization and reduction techniques for chemical kinetics, to state-of-the-art modeling strategies for turbulent premixed and nonpremixed combustion and their applications in engineering contexts.

An Improved Multiscale Model for Dilute Turbulent Gas Particle Flows Based on the Equilibration of Energy Concept

An Improved Multiscale Model for Dilute Turbulent Gas Particle Flows Based on the Equilibration of Energy Concept
Author: Ying Xu
Publsiher: Unknown
Total Pages: 134
Release: 2004
ISBN 10:
ISBN 13: OCLC:61366771
Language: EN, FR, DE, ES & NL

An Improved Multiscale Model for Dilute Turbulent Gas Particle Flows Based on the Equilibration of Energy Concept Book Review:

Many particle-laden flows in engineering applications involve turbulent gas flows. Modeling multiphase turbulent flows is an important research topic with applications in fluidized beds and particle conveying. A predictive multiphase turbulence model can help CFD codes to be more useful for engineering applications, such as the scale-up in the design of circulating fluidized combustor and coal gasifications. It is reasonable to expect that multiphase turbulence models should at least satisfy some basic modeling and performance criteria and give reasonable predictions for the canonical problems in dilute particle-laden turbulent flows. In this research, a comparative assessment of predictions from Simonin and Ahmadi's turbulence models is performed with direct numerical simulation (DNS) for two canonical problems in particle-laden turbulent flows. Based on the comparative assessment, some criteria and the areas for model improvement are identified: (i) model for interphase TKE transfer, especially the time scale of interphase TKE transfer, and (ii) correct prediction of TKE evolution with variation of particle Stokes number. Some deficiencies that are identified in the Simonin and Ahmadi models limit the applicability. A new multiphase turbulence model, the Equilibration of Energy Model (EEM), is proposed in this work. In EEM, a multiscale interaction time scale is proposed to account for the interaction of a particle with a range of eddy sizes. EEM shows good agreement with the DNS results for particle-laden istropic turbulence. For particle-laden homogeneous shear flows, model predictions from EEM can be further improved if the dissipation rate in fluid phase is modeled with more accuracy. This new time scale is incorporated in the interphase TKE transfer terms of the Simonin and Ahmadi models. For canonical problems in particle-laden turbulent flows, this time scale improves the predictions from these two models. Although EEM is a simple model, it has a clear physical interpretation and gives reasonable predictions for two canonical problems in particle-laden turbulent flows. It can be a useful engineering tool for CFD calculations of gas-solid two phase flows.

Mathematical Reviews

Mathematical Reviews
Author: Anonim
Publsiher: Unknown
Total Pages: 329
Release: 2008
ISBN 10:
ISBN 13: UOM:39015078588798
Language: EN, FR, DE, ES & NL

Mathematical Reviews Book Review:

Analysis Modeling and Simulation of Multiscale Problems

Analysis  Modeling and Simulation of Multiscale Problems
Author: Alexander Mielke
Publsiher: Springer Science & Business Media
Total Pages: 697
Release: 2006-10-14
ISBN 10: 3540356576
ISBN 13: 9783540356578
Language: EN, FR, DE, ES & NL

Analysis Modeling and Simulation of Multiscale Problems Book Review:

This book reports recent mathematical developments in the Programme "Analysis, Modeling and Simulation of Multiscale Problems", which started as a German research initiative in 2006. Multiscale problems occur in many fields of science, such as microstructures in materials, sharp-interface models, many-particle systems and motions on different spatial and temporal scales in quantum mechanics or in molecular dynamics. The book presents current mathematical foundations of modeling, and proposes efficient numerical treatment.

From Multiscale Modeling to Meso Science

From Multiscale Modeling to Meso Science
Author: Jinghai Li,Wei Ge,Wei Wang,Ning Yang,Xinhua Liu,Limin Wang,Xianfeng He,Xiaowei Wang,Junwu Wang,Mooson Kwauk
Publsiher: Springer Science & Business Media
Total Pages: 484
Release: 2013-03-22
ISBN 10: 3642351891
ISBN 13: 9783642351891
Language: EN, FR, DE, ES & NL

From Multiscale Modeling to Meso Science Book Review:

Multiscale modeling is becoming essential for accurate, rapid simulation in science and engineering. This book presents the results of three decades of research on multiscale modeling in process engineering from principles to application, and its generalization for different fields. This book considers the universality of meso-scale phenomena for the first time, and provides insight into the emerging discipline that unifies them, meso-science, as well as new perspectives for virtual process engineering. Multiscale modeling is applied in areas including: multiphase flow and fluid dynamics chemical, biochemical and process engineering mineral processing and metallurgical engineering energy and resources materials science and engineering Jinghai Li is Vice-President of the Chinese Academy of Sciences (CAS), a professor at the Institute of Process Engineering, CAS, and leader of the EMMS (Energy-minimizing multiscale) Group. Wei Ge, Wei Wang, Ning Yang and Junwu Wang are professors at the EMMS Group, part of the Institute of Process Engineering, CAS. Xinhua Liu, Limin Wang, Xianfeng He and Xiaowei Wang are associate professors at the EMMS Group, part of the Institute of Process Engineering, CAS. Mooson Kwauk is an emeritus director of the Institute of Process Engineering, CAS, and is an advisor to the EMMS Group.

Multi scale Simulation of Composite Materials

Multi scale Simulation of Composite Materials
Author: Stefan Diebels,Sergej Rjasanow
Publsiher: Springer
Total Pages: 178
Release: 2019-02-01
ISBN 10: 366257957X
ISBN 13: 9783662579572
Language: EN, FR, DE, ES & NL

Multi scale Simulation of Composite Materials Book Review:

Due to their high stiffness and strength and their good processing properties short fibre reinforced thermoplastics are well-established construction materials. Up to now, simulation of engineering parts consisting of short fibre reinforced thermoplastics has often been based on macroscopic phenomenological models, but deformations, damage and failure of composite materials strongly depend on their microstructure. The typical modes of failure of short fibre thermoplastics enriched with glass fibres are matrix failure, rupture of fibres and delamination, and pure macroscopic consideration is not sufficient to predict those effects. The typical predictive phenomenological models are complex and only available for very special failures. A quantitative prediction on how failure will change depending on the content and orientation of the fibres is generally not possible, and the direct involvement of the above effects in a numerical simulation requires multi-scale modelling. One the one hand, this makes it possible to take into account the properties of the matrix material and the fibre material, the microstructure of the composite in terms of fibre content, fibre orientation and shape as well as the properties of the interface between fibres and matrix. On the other hand, the multi-scale approach links these local properties to the global behaviour and forms the basis for the dimensioning and design of engineering components. Furthermore, multi-scale numerical simulations are required to allow efficient solution of the models when investigating three-dimensional problems of dimensioning engineering parts. Bringing together mathematical modelling, materials mechanics, numerical methods and experimental engineering, this book provides a unique overview of multi-scale modelling approaches, multi-scale simulations and experimental investigations of short fibre reinforced thermoplastics. The first chapters focus on two principal subjects: the mathematical and mechanical models governing composite properties and damage description. The subsequent chapters present numerical algorithms based on the Finite Element Method and the Boundary Element Method, both of which make explicit use of the composite’s microstructure. Further, the results of the numerical simulations are shown and compared to experimental results. Lastly, the book investigates deformation and failure of composite materials experimentally, explaining the applied methods and presenting the results for different volume fractions of fibres. This book is a valuable resource for applied mathematics, theoretical and experimental mechanical engineers as well as engineers in industry dealing with modelling and simulation of short fibre reinforced composites.