Multi Scale Computational Fluid Dynamics With Interfaces
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Author | : Jianghui Chao |
Publisher | : |
Total Pages | : |
Release | : 2006 |
Genre | : |
ISBN | : |
In order to suppress numerical instabilities associated with the presence of the interface, the following approaches were investigated: (i) a new surface tension formulation originated from the diffusion interface method was used to remove unphysical pressure wiggles across interfaces; (ii) a filter scheme was used in numerical gradient calculations to maintain monotonic property variations; (iii) a volume-correction procedure was devised. The performance of the improved LBE model was evaluated using the Rayleigh-Taylor instability problem, stationary bubble under force equilibrium, capillary waves, and rising bubbles. The computational results demonstrated that this LBE two-phase model is more robust than those reported in the literature, capable of treating larger density ratio up to order O(102), while confining the interface thickness within 5-6 grids.
Author | : Martin Oliver Steinhauser |
Publisher | : Springer Science & Business Media |
Total Pages | : 863 |
Release | : 2008 |
Genre | : Science |
ISBN | : 3540751165 |
The idea of the book is to provide a comprehensive overview of computational physics methods and techniques, that are used for materials modeling on different length and time scales. Each chapter first provides an overview of the physical basic principles which are the basis for the numerical and mathematical modeling on the respective length-scale. The book includes the micro-scale, the meso-scale and the macro-scale. The chapters follow this classification. The book will explain in detail many tricks of the trade of some of the most important methods and techniques that are used to simulate materials on the perspective levels of spatial and temporal resolution. Case studies are occasionally included to further illustrate some methods or theoretical considerations. Example applications for all techniques are provided, some of which are from the author’s own contributions to some of the research areas. Methods are explained, if possible, on the basis of the original publications but also references to standard text books established in the various fields are mentioned.
Author | : René de Borst |
Publisher | : Springer Science & Business Media |
Total Pages | : 451 |
Release | : 2010-10-09 |
Genre | : Computers |
ISBN | : 9048198097 |
This work gives a modern, up-to-date account of recent developments in computational multiscale mechanics. Both upscaling and concurrent computing methodologies will be addressed for a range of application areas in computational solid and fluid mechanics: Scale transitions in materials, turbulence in fluid-structure interaction problems, multiscale/multilevel optimization, multiscale poromechanics. A Dutch-German research group that consists of qualified and well-known researchers in the field has worked for six years on the topic of computational multiscale mechanics. This text provides a unique opportunity to consolidate and disseminate the knowledge gained in this project. The addition of chapters written by experts outside this working group provides a broad and multifaceted view of this rapidly evolving field.
Author | : Li Xi |
Publisher | : MDPI |
Total Pages | : 296 |
Release | : 2021-09-01 |
Genre | : Technology & Engineering |
ISBN | : 3036512667 |
Computational fluid dynamics (CFD), which uses numerical analysis to predict and model complex flow behaviors and transport processes, has become a mainstream tool in engineering process research and development. Complex chemical processes often involve coupling between dynamics at vastly different length and time scales, as well as coupling of different physical models. The multiscale and multiphysics nature of those problems calls for delicate modeling approaches. This book showcases recent contributions in this field, from the development of modeling methodology to its application in supporting the design, development, and optimization of engineering processes.
Author | : Thomas Y. Hou |
Publisher | : World Scientific |
Total Pages | : 379 |
Release | : 2009 |
Genre | : Science |
ISBN | : 9814273252 |
Multi-Scale Phenomena in Complex Fluids is a collection of lecture notes delivered during the ªrst two series of mini-courses from "Shanghai Summer School on Analysis and Numerics in Modern Sciences," which was held in 2004 and 2006 at Fudan University, Shanghai, China. This review volume of 5 chapters, covering various fields in complex fluids, places emphasis on multi-scale modeling, analyses and simulations. It will be of special interest to researchers and graduate students who want to work in the field of complex fluids.
Author | : Adela Ionescu |
Publisher | : BoD – Books on Demand |
Total Pages | : 412 |
Release | : 2018-02-14 |
Genre | : Computers |
ISBN | : 9535137905 |
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.
Author | : Yuri Bazilevs |
Publisher | : John Wiley & Sons |
Total Pages | : 444 |
Release | : 2013-01-25 |
Genre | : Technology & Engineering |
ISBN | : 111848357X |
Computational Fluid-Structure Interaction: Methods and Applications takes the reader from the fundamentals of computational fluid and solid mechanics to the state-of-the-art in computational FSI methods, special FSI techniques, and solution of real-world problems. Leading experts in the field present the material using a unique approach that combines advanced methods, special techniques, and challenging applications. This book begins with the differential equations governing the fluid and solid mechanics, coupling conditions at the fluid–solid interface, and the basics of the finite element method. It continues with the ALE and space–time FSI methods, spatial discretization and time integration strategies for the coupled FSI equations, solution techniques for the fully-discretized coupled equations, and advanced FSI and space–time methods. It ends with special FSI techniques targeting cardiovascular FSI, parachute FSI, and wind-turbine aerodynamics and FSI. Key features: First book to address the state-of-the-art in computational FSI Combines the fundamentals of computational fluid and solid mechanics, the state-of-the-art in FSI methods, and special FSI techniques targeting challenging classes of real-world problems Covers modern computational mechanics techniques, including stabilized, variational multiscale, and space–time methods, isogeometric analysis, and advanced FSI coupling methods Is in full color, with diagrams illustrating the fundamental concepts and advanced methods and with insightful visualization illustrating the complexities of the problems that can be solved with the FSI methods covered in the book. Authors are award winning, leading global experts in computational FSI, who are known for solving some of the most challenging FSI problems Computational Fluid-Structure Interaction: Methods and Applications is a comprehensive reference for researchers and practicing engineers who would like to advance their existing knowledge on these subjects. It is also an ideal text for graduate and senior-level undergraduate courses in computational fluid mechanics and computational FSI.
Author | : Young-Il Lim |
Publisher | : MDPI |
Total Pages | : 114 |
Release | : 2021-02-22 |
Genre | : Technology & Engineering |
ISBN | : 3039439332 |
In this Special Issue, one review paper highlights the necessity of multiscale CFD, coupling micro- and macro-scales, for exchanging information at the interface of the two scales. Four research papers investigate the hydrodynamics, heat transfer, and chemical reactions of various processes using Eulerian CFD modeling. CFD models are attractive for industrial applications. However, substantial efforts in physical modeling and numerical implementation are still required before their widespread implementation.
Author | : Frithjof Karsch |
Publisher | : World Scientific |
Total Pages | : 312 |
Release | : 1997-06-19 |
Genre | : |
ISBN | : 9814546291 |
Multiscale Phenomena play an essential role in the dynamics of many complex systems. Owing to their inherent nonlinearity and the involvement of many different length scales, these systems are often only be studied through numerical simulations. The book focused on common structures and problems in fluid dynamics, particle physics and macromolecule simulations. An important aspect of the discussions was the development of simulation techniques for massively parallel computers and recent advances in the construction of special purpose parallel computers.
Author | : Paul G. Tucker |
Publisher | : Cambridge University Press |
Total Pages | : 589 |
Release | : 2016-03-15 |
Genre | : Technology & Engineering |
ISBN | : 131666659X |
The advent of supercomputers has brought computational fluid dynamics (CFD) to the forefront as a tool to analyze increasingly complex simulation scenarios in many fields. Computational aerodynamics problems are also increasingly moving towards being coupled, multi-physics and multi-scale with complex, moving geometries. The latter presents severe geometry handling and meshing challenges. Simulations also frequently use formal design optimization processes. This book explains the evolution of CFD and provides a comprehensive overview of the plethora of tools and methods available for solving complex scenarios while exploring the future directions and possible outcomes. Using numerous examples, illustrations and computational methods the author discusses turbulence modeling, pre and post processing, coupled solutions, the importance of design optimization, multiphysics problems, reduced order models, and large scale computations and the future of CFD. Advanced Computational Fluid and Aerodynamics is suitable for audiences engaged in computational fluid dynamics including advanced undergraduates, researchers and industrial practitioners.