Download or read book Studying Turbulent Plasma Using Direct Numerical Simulation and Probability Density Function written by Pascale Domingo and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Direct Numerical Simulation of the Influence of Plasmas on Turbulent Flows written by and published by . This book was released on 2006 with total page 49 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work uses direct numerical simulation to study the thermal effect of a region of plasma on quiescent air. The simulations solve the compressible ideal gas Navier-Stokes equations using Fourier spectral methods. A shock capturing scheme is incorporated to account for the strong shock waves. Also, a logarithmic formulation for the continuity equation is developed to handle low densities at the core of the plasma.
Download or read book Plasma and Fluid Turbulence written by A. Yoshizawa and published by CRC Press. This book was released on 2002-11-12 with total page 459 pages. Available in PDF, EPUB and Kindle. Book excerpt: Theory and modelling with direct numerical simulation and experimental observations are indispensable in the understanding of the evolution of nature, in this case the theory and modelling of plasma and fluid turbulence. Plasma and Fluid Turbulence: Theory and Modelling explains modelling methodologies in depth with regard to turbulence phenomena a
Download or read book Energy Transfer and Dissipation in Plasma Turbulence written by Yan Yang and published by Springer. This book was released on 2019-05-02 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book revisits the long-standing puzzle of cross-scale energy transfer and dissipation in plasma turbulence and introduces new perspectives based on both magnetohydrodynamic (MHD) and Vlasov models. The classical energy cascade scenario is key in explaining the heating of corona and solar wind. By employing a high-resolution hybrid (compact finite difference & WENO) scheme, the book studies the features of compressible MHD cascade in detail, for example, in order to approximate a real plasma cascade as “Kolmogorov-like” and to understand features that go beyond the usual simplified theories based on incompressible models. When approaching kinetic scales where plasma effects must be considered, it uses an elementary analysis of the Vlasov–Maxwell equations to help identify the channels through which energy transfer must be dissipated. In addition, it shows that the pressure–strain interaction is of great significance in producing internal energy. This analysis, in contrast to many other recent studies, does not make assumptions about wave-modes, instability or other specific mechanisms responsible for the dynamics – the results are direct consequences of the Vlasov–Maxwell system of equations. This is an important step toward understanding dissipation in turbulent collisionless plasma in space and astrophysics.
Download or read book Numerical Simulation of Collisionless Kinetic Plasma Turbulence written by Daniel W. Crews and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hot plasma dissipates energy on scales comparable to the modes of collective oscillation through a turbulent cascade of the distribution function in its phase space. This phase space turbulence is responsible for augmenting fluid transport coefficients beyond predictions from collisional theories, a phenomenon termed anomalous transport. This work studies collisionless kinetic phase space turbulence using spectral and high-order discontinuous Galerkin numerical methods to produce highly resolved simulations of the kinetic equation. Based on these simulations intuition is built for the physics of anomalously enhanced transport, critical studies are performed on reduced models such as quasilinear theory, and mechanisms are identified by which macroscopic plasma properties are altered by microscopic turbulence. Novel results on discontinuous Galerkin method can be found within, such as a new way of thinking about the discrete differential operators of finite element methods as partial sums of orthogonal polynomial completeness theorems. Phase space eigenfunctions are studied in detail for both the electrostatic and electromagnetic pictures in the unmagnetized and strongly magnetized regimes, and utilized in a novel way to produce the initial conditions of continuum kinetic simulations. The nonlinear phase space structures of electron cyclotron instabilities are studied for loss-cone distributions. In addition, highly resolved simulations are presented for Langmuir and Weibel turbulence in two-dimensional configuration space.
Download or read book The Lattice Boltzmann Method written by Timm Krüger and published by Springer. This book was released on 2016-11-07 with total page 705 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is an introduction to the theory, practice, and implementation of the Lattice Boltzmann (LB) method, a powerful computational fluid dynamics method that is steadily gaining attention due to its simplicity, scalability, extensibility, and simple handling of complex geometries. The book contains chapters on the method's background, fundamental theory, advanced extensions, and implementation. To aid beginners, the most essential paragraphs in each chapter are highlighted, and the introductory chapters on various LB topics are front-loaded with special "in a nutshell" sections that condense the chapter's most important practical results. Together, these sections can be used to quickly get up and running with the method. Exercises are integrated throughout the text, and frequently asked questions about the method are dealt with in a special section at the beginning. In the book itself and through its web page, readers can find example codes showing how the LB method can be implemented efficiently on a variety of hardware platforms, including multi-core processors, clusters, and graphics processing units. Students and scientists learning and using the LB method will appreciate the wealth of clearly presented and structured information in this volume.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 602 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Download or read book Interstellar Turbulence written by José Franco and published by Cambridge University Press. This book was released on 1999-05-28 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: This timely volume presents a series of review articles covering every aspect of interstellar turbulence--from accretion disks, molecular clouds, atomic and ionized media, through to spiral galaxies - based on a major international conference held in Mexico City.With advances in observational techniques and the development of more efficient computer codes and faster computers, research in this area has made spectacular progress in recent years. This book provides a comprehensive overview of the most important developments in observing and modelling turbulent flows in the cosmos. It provides graduate student and researchers with a state-of-the-art summary of observational, theoretical and computational research in interstellar turbulence.
Download or read book Statistical Treatment of Turbulent Polydisperse Particle Systems written by J.S. Shrimpton and published by Springer. This book was released on 2014-06-20 with total page 127 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book we will introduce the modeling process of turbulent particulate flows which are encountered in many engineering and environmental applications. These types of flows usually also involve heat and mass transfer and turbulence adds another dimension to the complexity of the problem and hence a rigorous mathematical treatment is usually required. This required mathematical background makes the learning curve for new research students and practicing engineers extremely steep. Therefore modeling process for new or existing problems is extremely slow and is usually restricted to minor improvements to the to the available models. In this book we try to gather the required mathematical knowledge and introduce them more intuitively. Many numerical simulations of basic processes and equation will be given to provide the reader with a physical understanding of the different terms in the underlying equations. We will start the modeling process from a mesoscopic level which deals with the system of an intermediate length scale between the size of the atoms or molecules and the bulk of the material. This provides a unique opportunity for the reader to intuitively add different phenomena to their models and equipped with the necessary mathematical tools derive the final models for their problems.
Download or read book AIAA Journal written by American Institute of Aeronautics and Astronautics and published by . This book was released on 2003 with total page 1252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1998 with total page 980 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Study of Magnetized Plasma Turbulence in the Nonrelativistic and Relativistic Regimes written by Cristian Santiago Vega and published by . This book was released on 2024 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Turbulence is ubiquitous in space and astrophysical plasmas and is believed to play an important role in particle heating and nonthermal acceleration. These plasmas are commonly threaded by an external magnetic field imposed by the object they surround (e.g., planet, star), making magnetized plasma turbulence a problem of significant interest. In this thesis, we use numerical simulations to study two relatively unexplored regimes of magnetized plasma turbulence, viz., the sub-electron inertial scale in nonrelativistic low electron beta plasmas and both the magnetohydrodynamic and kinetic scales in relativistically hot plasmas. Phenomenology is used to model the energy distribution of turbulent fluctuations and particles. In the nonrelativistic regime studied, energy dissipation is seen to be strongly intermittent, concentrating on electron-scale current sheets. A few of these current sheets exhibit signatures of electron-only reconnection. The particle energy probability density function in the relativistic regime displays a nonthermal tail of ultrarelativistic particles that goes from power-law-like to log-normal as the guide field is increased. We propose that this can be understood in terms of the acceleration mechanism that dominates in each case. Also noteworthy is the observed intermittency in the spatial distribution of ultrarelativistic particles.
Download or read book Direct Numerical Simulation of the Interaction of a Laser induced Plasma with Isotropic Turbulence written by Shankar Ghosh and published by . This book was released on 2008 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 36th Aerospace Sciences Meeting Exhibit written by and published by . This book was released on 1998 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Direct and Large Eddy Simulation VIII written by Hans Kuerten and published by Springer Science & Business Media. This book was released on 2011-10-05 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume continues previous DLES proceedings books, presenting modern developments in turbulent flow research. It is comprehensive in its coverage of numerical and modeling techniques for fluid mechanics. After Surrey in 1994, Grenoble in 1996, Cambridge in 1999, Enschede in 2001, Munich in 2003, Poitiers in 2005, and Trieste in 2009, the 8th workshop, DLES8, was held in Eindhoven, The Netherlands, again under the auspices of ERCOFTAC. Following the spirit of the series, the goal of this workshop is to establish a state-of-the-art of DNS and LES techniques for the computation and modeling of transitional/turbulent flows covering a broad scope of topics such as aerodynamics, acoustics, combustion, multiphase flows, environment, geophysics and bio-medical applications. This gathering of specialists in the field was a unique opportunity for discussions about the more recent advances in the prediction, understanding and control of turbulent flows in academic or industrial situations.
Download or read book Numerical Methods for Fluid Dynamics VI written by Michael John Baines and published by . This book was released on 1998 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Microphysics of Cosmic Plasmas written by André Balogh and published by Springer Science & Business Media. This book was released on 2014-01-15 with total page 631 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents a comprehensive review of physical processes in astrophysical plasmas. This title presents a review of the detailed aspects of the physical processes that underlie the observed properties, structures and dynamics of cosmic plasmas. An assessment of the status of understanding of microscale processes in all astrophysical collisionless plasmas is provided. The topics discussed include turbulence in astrophysical and solar system plasmas as a phenomenological description of their dynamic properties on all scales; observational, theoretical and modelling aspects of collisionless magnetic reconnection; the formation and dynamics of shock waves; and a review and assessment of microprocesses, such as the hierarchy of plasma instabilities, non-local and non-diffusive transport processes and ionisation and radiation processes. In addition, some of the lessons that have been learned from the extensive existing knowledge of laboratory plasmas as applied to astrophysical problems are also covered. This volume is aimed at graduate students and researchers active in the areas of cosmic plasmas and space science. Originally published in Space Science Reviews journal, Vol. 278/2-4, 2013.
