Download or read book New Insights Into Large Eddy Simulation written by and published by . This book was released on 1992 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fluid dynamic turbulence is one of the most challenging computational physics problems because of the extremely wide range of time and space scales involved, the strong nonlinearity of the government equations, and the many practical and important applications. While most linear fluid instabilities are well understood, the nonlinear interactions among them makes even the relatively simple limit of homogeneous isotropic turbulence difficult to treat physically, mathematically, and computationally. Turbulence is modeled computationally by a two stage bootstrap process. The first stage, Direct Numerical Simulations, attempts to resolve the relevant physical time and space scales but its application is limited to diffusive flows with a relatively small Reynolds number (Re). Using Direct Numerical Simulation to provide a database, in turn, allows calibration of phenomenological turbulence models for engineering applications. Large Eddy Simulation incorporates a form of turbulence modeling applicable when the large-scale flows of interest are intrinsically time dependent, thus throwing common statistical models into question. A promising approach to large Eddy Simulation involves the use of high-resolution monotone computational fluid dynamics algorithms such as Flux-Corrected Transport or the Piecewise Parabolic Method which have intrinsic subgrid turbulence models coupled naturally to the resolves scales in the computed flow. The physical considerations underlying and evidence supporting this Monotone Integrated Large Eddy Simulation approach are discussed. Flux-corrected transport Large-eddy simulation Shear flows Subgrid modeling Turbulence.

Download or read book Large Eddy Simulation for Incompressible Flows written by P. Sagaut and published by Springer Science & Business Media. This book was released on 2006 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt: First concise textbook on Large-Eddy Simulation, a very important method in scientific computing and engineering From the foreword to the third edition written by Charles Meneveau: "... this meticulously assembled and significantly enlarged description of the many aspects of LES will be a most welcome addition to the bookshelves of scientists and engineers in fluid mechanics, LES practitioners, and students of turbulence in general."

Download or read book Progress in Hybrid RANS LES Modelling written by Yannick Hoarau and published by Springer Nature. This book was released on 2019-11-01 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gathers the proceedings of the Seventh Symposium on Hybrid RANS-LES Methods, which was held on September 17-19 in Berlin, Germany. The different chapters, written by leading experts, reports on the most recent developments in flow physics modelling, and gives a special emphasis to industrially relevant applications of hybrid RANS-LES methods and other turbulence-resolving modelling approaches. The book addresses academic researchers, graduate students, industrial engineers, as well as industrial R&D managers and consultants dealing with turbulence modelling, simulation and measurement, and with multidisciplinary applications of computational fluid dynamics (CFD), such as flow control, aero-acoustics, aero-elasticity and CFD-based multidisciplinary optimization. It discusses in particular advanced hybrid RANS-LES methods. Further topics include wall-modelled Large Eddy Simulation (WMLES) methods, embedded LES, Lattice-Bolzman methods and turbulence-resolving applications and a comparison of the LES methods with both hybrid RANS-LES and URANS methods. Overall, the book provides readers with a snapshot on the state-of-the-art in CFD and turbulence modelling, with a special focus to hybrid RANS-LES methods and their industrial applications.

Download or read book High Performance Computing on Vector Systems 2007 written by Sabine Roller and published by Springer Science & Business Media. This book was released on 2007-10-16 with total page 265 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains papers presented at the fifth and sixth Teraflop Workshop. It presents the state-of-the-art in high performance computing and simulation on modern supercomputer architectures. It covers trends in hardware and software development in general and specifically the future of vector-based systems and heterogeneous architectures. It covers computational fluid dynamics, fluid-structure interaction, physics, chemistry, astrophysics, and climate research.

Download or read book Novel Techniques in Maintenance Repair and Overhaul written by T. Hikmet Karakoc and published by Springer Nature. This book was released on 2023-12-24 with total page 447 pages. Available in PDF, EPUB and Kindle. Book excerpt: The International Symposium on Aircraft Technology, MRO, and Operations (ISATECH) is a multi-disciplinary symposium presenting research on current aerospace issues. The conference provides a platform offering insights on the latest trends in aircraft technology, maintenance, repair, overhaul, and operations that offer innovative solutions to the aviation industry's challenges. Coverage includes the operational and MRO needs of hybrid, electric, all-electric, and fuel cell air vehicles adapted to new technology standards. ISATECH allows researchers, scientists, engineers, practitioners, policymakers, and students to exchange information, present new technologies and developments, and discuss future direction, strategies, and priorities.

Download or read book Seventh IUTAM Symposium on Laminar Turbulent Transition written by Philipp Schlatter and published by Springer Science & Business Media. This book was released on 2010-03-11 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt: The origins of turbulent ?ow and the transition from laminar to turbulent ?ow are the most important unsolved problems of ?uid mechanics and aerodynamics. - sides being a fundamental question of ?uid mechanics, there are numerous app- cations relying on information regarding transition location and the details of the subsequent turbulent ?ow. For example, the control of transition to turbulence is - pecially important in (1) skin-friction reduction of energy ef?cient aircraft, (2) the performance of heat exchangers and diffusers, (3) propulsion requirements for - personic aircraft, and (4) separation control. While considerable progress has been made in the science of laminar to turbulent transition over the last 30 years, the c- tinuing increase in computer power as well as new theoretical developments are now revolutionizing the area. It is now starting to be possible to move from simple 1D eigenvalue problems in canonical ?ows to global modes in complex ?ows, all - companied by accurate large-scale direct numerical simulations (DNS). Here, novel experimental techniques such as modern particle image velocimetry (PIV) also have an important role. Theoretically the in?uence of non-normality on the stability and transition is gaining importance, in particular for complex ?ows. At the same time the enigma of transition in the oldest ?ow investigated, Reynolds pipe ?ow tran- tion experiment, is regaining attention. Ideas from dynamical systems together with DNS and experiments are here giving us new insights.

Download or read book New Developments in Computational Fluid Dynamics written by Kozo Fujii and published by Springer Science & Business Media. This book was released on 2006-01-05 with total page 249 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contains 20 papers presented at the Sixth International Nobeyama Workshop on the New Century of Computational Fluid Dynamics, Nobeyama, Japan, April 21-24, 2003. These papers cover computational electromagnetics, astrophysical topics, CFD research and applications in general, large-eddy simulation, mesh generation topics, visualization, and more.

Download or read book Bioaerosol Characterisation Transportation and Transmission written by Yihuan Yan and published by Springer Nature. This book was released on 2023-07-03 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book aims to predict and model the transport of bioaerosols, identify their transmission characteristics, and assess occupants’ infection risks. Although existing epidemiological books provide fundamental infection rate of existing diseases, the ability of predicting emerging disease transmission in the air and assessing occupants’ infection risks to the bioaerosols is significantly lacking. This book is considered as a professional book that provides in-depth discussion of the aforementioned issues and provides potential approaches to solve these issues would be highly demanded by readers in this emerging research field. This book offers essential and systematic analysis on the fate of bioaerosols from their release in the air to the final destination in human’s respiratory systems through direct 3D visualizations techniques. It also provides quantifiable method to assess each occupant’s infection risks to the infectious bioaerosols in indoor environments. The readers will gain essential fundamental characteristics of bioaerosols (active time, viability, etc.) and will gain the advanced skills on how to integrate these properties into numerical modeling and assess the occupants’ exposure risks.

Download or read book Turbulence in River and Maritime Hydraulics written by Michele Mossa and published by MDPI. This book was released on 2019-03-08 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding of the role of turbulence in controlling transport processes is of paramount importance for the preservation and protection of aquatic ecosystems, the minimization of the deleterious consequences of anthropogenic activity, and the successful sustainable development of river and maritime areas. In this context, the present Special Issue collects 15 papers which provide a representation of the present understanding of turbulent processes and their effects in river and maritime environments. The presented collection of papers is not exhaustive, but it highlights the key priority areas and knowledge gaps in this field of research. The published papers present the state-of-the-art knowledge of complex environmental flows which are useful for researchers and practitioners. The paper contents are an overview of some recent topics of research and an exposure of the current and future challenges associated with these topics.

Download or read book Computational Fluid Dynamics written by Eduardo Ramos and published by World Scientific. This book was released on 2001 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pt. I. Astrophysics. Very high resolution simulations of compressible, turbulent flows / Paul R. Woodward [und weitere] -- Instabilities and filamentation of dispersive alfven waves / D. Laveder, T. Passot and P.L. Sulem -- Astrophysical jets / A.C. Raga [und weitere] -- A nonhydrostatic meteorological model (Meso-NH) applied to high angular resolution in astronomy: 3D characterization and forecasting of the optical turbulence / Elena Masciadri -- Numerical simulations of interplanetary shock waves using ZEUS-3D / A. Santillan, J.A. Gonzalez-Esparza and M.A. Yanez -- Photoionizing shocks in the interstellar medium / S.J. Arthur -- Numerical simulation of the interaction between jets and supernova remnants / Pablo Fabian Velazquez and Alejandro Raga -- Thermal instability in a turbulent medium / A. Gazol, E. Vazquez-Semadeni and J. Scalo -- Turbulent dissipation in the interstellar medium in the presence of discrete energy sources / Vladimir Avila-Reese and Enrique Vazquez-Semadeni -- The density probability distribution function in turbulent, isothermal, magnetized flows in a slab geometry / Enrique Vazquez-Semadeni and Thierry Passot -- Multifractal structure in simulations and observations of the interstellar medium / Wilder Chicana Nuncebay and Enrique Vazquez-Semadeni -- pt. II. Geophysics. Stratiform low clouds: Phenomenology and large eddy simulations / Douglas K. Lilly -- On the modeling of deep convective clouds over Mexico City / G.B. Raga and J. Morfin -- Spectral structure of growing normal modes for exact solutions to the barotropic vorticity equation on a sphere / Yuri N. Skiba and Andrei Y. Strelkov -- pt. III. Numerical and computational aspects. Distributed parallel simulation of surface tension driven viscous flow and transport processes / G.F. Carey [und weitere] -- Considerations for scalable CFD on the SGI ccNUMA architecture / M.D. Kremenetsky, S.A. Posey and T.L. Tysinger -- Parallelization of a two-way interactive grid nesting atmospheric model / Patrick Jabouille -- Natural convection in a cubical porous cavity: Solution by orthogonal collocation / Hugo Jimenez-Islas -- Numerical solutions of nonlinear DIA equations and calculation of turbulent diffusivities / N.A. Silant'ev -- pt. IV. Applications. From stars to volcanoes: The SPH story / J.J. Monaghan -- A parallel lattice-Boltzmann method for large scale simulations of complex fluids / Maziar Nekovee [und weitere] -- Natural convection in a slender container / Luis M. de la Cruz and Eduardo Ramos -- Effect on fluid flow and heat transfer of dephasing between plates in wavy plate passages / R. Romero-Mendez [und weitere] -- Analysis of the numerical simulation of the filling system used in production of aluminum pistons / A.R. Cabrera-Ruiz [und weitere] -- Isotherms in a solid with a tilted fracture and their effects on the local fluid motion / A. Medina [und weitere] -- Basic numerical simulations in Kaluza's magnetohydrodynamics / Alfredo Sandoval-Villalbazo [und weitere] -- Understanding dilute gases: Going beyond the Navier-Stokes equations / F.J. Uribe

Download or read book Parallel Computational Fluid Dynamics 2003 written by Boris Chetverushkin and published by Elsevier. This book was released on 2004-05-06 with total page 558 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book is devoted to using of parallel multiprocessor computer systems for numerical simulation of the problems which can be described by the equations of continuum mechanics. Parallel algorithms and software, the problems of meta-computing are discussed in details, some results of high performance simulation of modern gas dynamic problems, combustion phenomena, plasma physics etc are presented. · Parallel Algorithms for Multidisciplinary Studies

Download or read book Complex Effects in Large Eddy Simulations written by Stavros Kassinos and published by Springer Science & Business Media. This book was released on 2007-07-16 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: The field of Large Eddy Simulations is reaching a level of maturity that brings this approach to the mainstream of engineering computations, while it opens opportunities and challenges. The main objective of this volume is to bring together leading experts in presenting the state-of-the-art and emerging approaches for treating complex effects in LES. A common theme throughout is the role of LES in the context of multiscale modeling and simulation.

Download or read book Sustained Simulation Performance 2019 and 2020 written by Michael M. Resch and published by Springer Nature. This book was released on 2021-03-01 with total page 187 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the state of the art in High Performance Computing on modern supercomputer architectures. It addresses trends in hardware and software development in general. The contributions cover a broad range of topics, from performance evaluations in context with power efficiency to Computational Fluid Dynamics and High Performance Data Analytics. In addition, they explore new topics like the use of High Performance Computers in the field of Artificial Intelligence and Machine Learning. All contributions are based on selected papers presented at the 30th Workshop on Sustained Simulation Performance (WSSP) held at the High Performance Computing Center, University of Stuttgart, Germany in October 2019 and on the papers for the planned Workshop on Sustained Simulation Performance in March 2020, which could not take place due to the Covid-19 pandemic.

Download or read book 28th International Symposium on Shock Waves written by Konstantinos Kontis and published by Springer Science & Business Media. This book was released on 2012-03-22 with total page 1122 pages. Available in PDF, EPUB and Kindle. Book excerpt: The University of Manchester hosted the 28th International Symposium on Shock Waves between 17 and 22 July 2011. The International Symposium on Shock Waves first took place in 1957 in Boston and has since become an internationally acclaimed series of meetings for the wider Shock Wave Community. The ISSW28 focused on the following areas: Blast Waves, Chemically Reacting Flows, Dense Gases and Rarefied Flows, Detonation and Combustion, Diagnostics, Facilities, Flow Visualisation, Hypersonic Flow, Ignition, Impact and Compaction, Multiphase Flow, Nozzle Flow, Numerical Methods, Propulsion, Richtmyer-Meshkov, Shockwave Boundary Layer Interaction, Shock Propagation and Reflection, Shock Vortex Interaction, Shockwave Phenomena and Applications, as well as Medical and Biological Applications. The two Volumes contain the papers presented at the symposium and serve as a reference for the participants of the ISSW 28 and individuals interested in these fields.

Download or read book High Performance Computing in Science and Engineering 06 written by Wolfgang E. Nagel and published by Springer Science & Business Media. This book was released on 2007-07-26 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the state-of-the-art in simulation on supercomputers. Leading researchers present results achieved on systems of the High Performance Computing Center Stuttgart (HLRS) for the year 2006. The reports cover all fields of computational science and engineering ranging from CFD via computational physics and chemistry to computer science with a special emphasis on industrially relevant applications. The book comes with illustrations and tables.

Download or read book High Performance Computing in Science and Engineering 21 written by Wolfgang E. Nagel and published by Springer Nature. This book was released on 2023-03-03 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the state-of-the-art in supercomputer simulation. It includes the latest findings from leading researchers using systems from the High Performance Computing Center Stuttgart (HLRS) in 2021. The reports cover all fields of computational science and engineering ranging from CFD to computational physics and from chemistry to computer science with a special emphasis on industrially relevant applications. Presenting findings of one of Europe’s leading systems, this volume covers a wide variety of applications that deliver a high level of sustained performance. The book covers the main methods in high-performance computing. Its outstanding results in achieving the best performance for production codes are of particular interest for both scientists and engineers. The book comes with a wealth of color illustrations and tables of results.

Download or read book The Finite Element Method Set written by O. C. Zienkiewicz and published by Elsevier. This book was released on 2005-11-25 with total page 1863 pages. Available in PDF, EPUB and Kindle. Book excerpt: The sixth editions of these seminal books deliver the most up to date and comprehensive reference yet on the finite element method for all engineers and mathematicians. Renowned for their scope, range and authority, the new editions have been significantly developed in terms of both contents and scope. Each book is now complete in its own right and provides self-contained reference; used together they provide a formidable resource covering the theory and the application of the universally used FEM. Written by the leading professors in their fields, the three books cover the basis of the method, its application to solid mechanics and to fluid dynamics. * This is THE classic finite element method set, by two the subject's leading authors * FEM is a constantly developing subject, and any professional or student of engineering involved in understanding the computational modelling of physical systems will inevitably use the techniques in these books * Fully up-to-date; ideal for teaching and reference