Numerical Modelling Of Astrophysical Turbulence

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Numerical Modelling Of Astrophysical Turbulence

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Author : Wolfram Schmidt
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-09-20

Numerical Modelling Of Astrophysical Turbulence written by Wolfram Schmidt 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 2013-09-20 with Science categories.

In this "SpringerBrief" the author considers the underlying problems and questions that are common to numerical models of turbulence in different astrophysical systems. Turbulence has emerged as an important research topic in several areas of astrophysics. Understanding and modeling turbulence is particularly important for the dynamics of the interstellar medium, but also for the intergalactic medium, as well as in stars. The advancement of methods for numerical simulations of astrophysical turbulence, however, is still challenging because of gravity, strong compressibility, magnetic fields, and other effects. The book begins with a review of general aspects of numerical simulations of turbulence. In the main part the author presents findings from his numerical studies on astrophysical turbulence and discusses the astrophysical implications. He also explains in detail the numerical schemes utilized. Readers will find that this book offers a compact yet comprehensive introduction.

Turbulence And Self Organization

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Author : Mikhail Ya Marov
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-01-16

Turbulence And Self Organization written by Mikhail Ya Marov 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 2013-01-16 with Science categories.

The book deals with the development of continual models of turbulent natural media. Such models serve as a ground for the statement and numerical evaluation of the key problems of the structure and evolution of the numerous astrophysical and geophysical objects. The processes of ordering (self-organization) in an originally chaotic turbulent medium are addressed and treated in detail with the use of irreversible thermodynamics and stochastic dynamics approaches which underlie the respective models. Different examples of ordering set up in the natural environment and outer space are brought and thoroughly discussed, the main focus being given to the protoplanetary discs formation and evolution.

Turbulence And Magnetic Fields In Astrophysics

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Author : Edith Falgarone
language : en
Publisher: Springer
Release Date : 2008-01-11

Turbulence And Magnetic Fields In Astrophysics written by Edith Falgarone and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-01-11 with Science categories.

This book contains review articles of most of the topics addressed at the conf- ence on Simulations of Magnetohydrodynamic turbulence in astrophysics: recent achievements and perspectives which took place from July 2 to 6, 2001 at the Institut Henri Poincar ́e in Paris. We made the choice to publish these lectures in a tutorial form so that they can be read by a broad audience. As a result, this book does not give an exhaustive view of all the subjects addressed during the conference. The main objective of this workshop which gathered about 90 scientists from di?erent ?elds, was to present and confront recent results on the topic of t- bulence in magnetized astrophysical environments. A second objective was to discuss the latest generation of numerical codes, such as those using adaptive mesh re?nement (AMR) techniques. During a plenary discussion at the end of the workshop discussions were held on several topics, often at the heart of vivid controversies. Topics included the timescale for the dissipation of magneto-hydrodynamical (MHD) turbulence, the role of boundary conditions, the characteristics of imbalanced turbulence, the validity of the polytropic approach to Alfv ́en waves support within interst- lar clouds, the source of turbulence inside clouds devoid of stellar activity, the timescale for star formation, the Alfv ́en Mach number of interstellar gas motions, the formation process for helical ?elds in the interstellar medium. The impact of small upon large scales was also discussed.

Turbulence

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Author : O. M. Belotserkovskii
language : en
Publisher: Cambridge Int Science Publishing
Release Date : 2005

Turbulence written by O. M. Belotserkovskii and has been published by Cambridge Int Science Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Science categories.

The authors present the results of numerical experiments carried out to examine the problem of development of turbulence and convection. On the basis of the results, they propose a physical model of the development of turbulence. Numerical algorithms and difference schema for carrying out numerical experiments in hydrodynamics, are proposed. Original algorithms, suitable for calculation of the development of the processes of turbulence and convection in different conditions, even on astrophysical objects, are presented. The results of numerical modelling of several important phenomena having both fundamental and applied importance are described.

Turbulence Numerical Analysis Modelling And Simulation

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Author : William Layton
language : en
Publisher: MDPI
Release Date : 2018-05-04

Turbulence Numerical Analysis Modelling And Simulation written by William Layton and has been published by MDPI this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-05-04 with categories.

This book is a printed edition of the Special Issue "Turbulence: Numerical Analysis, Modelling and Simulation" that was published in Fluids

Turbulence In Fluids

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Author : Marcel Lesieur
language : en
Publisher: Springer
Release Date : 1987-03-31

Turbulence In Fluids written by Marcel Lesieur and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987-03-31 with Science categories.

Interstellar Turbulence

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Author : José Franco
language : en
Publisher: Cambridge University Press
Release Date : 1999-05-28

Interstellar Turbulence written by José Franco 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 1999-05-28 with Science categories.

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.

Magnetohydrodynamic Turbulence

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Author : Dieter Biskamp
language : en
Publisher: Cambridge University Press
Release Date : 2003-07-31

Magnetohydrodynamic Turbulence written by Dieter Biskamp 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 2003-07-31 with Science categories.

This book presents an introduction to, and modern account of, magnetohydrodynamic (MHD) turbulence, an active field both in general turbulence theory and in various areas of astrophysics. The book starts by introducing the MHD equations, certain useful approximations and the transition to turbulence. The second part of the book covers incompressible MHD turbulence, the macroscopic aspects connected with the different self-organization processes, the phenomenology of the turbulence spectra, two-point closure theory, and intermittency. The third considers two-dimensional turbulence and compressible (in particular, supersonic) turbulence. Because of the similarities in the theoretical approach, these chapters start with a brief account of the corresponding methods developed in hydrodynamic turbulence. The final part of the book is devoted to astrophysical applications: turbulence in the solar wind, in accretion disks, and in the interstellar medium. This book is suitable for graduate students and researchers working in turbulence theory, plasma physics and astrophysics.

Turbulence And Magnetic Fields In Astrophysics

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Author : Edith Falgarone
language : en
Publisher: Springer
Release Date : 2003-03-11

Turbulence And Magnetic Fields In Astrophysics written by Edith Falgarone and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003-03-11 with Science categories.

This book contains review articles of most of the topics addressed at the conf- ence on Simulations of Magnetohydrodynamic turbulence in astrophysics: recent achievements and perspectives which took place from July 2 to 6, 2001 at the Institut Henri Poincar ́e in Paris. We made the choice to publish these lectures in a tutorial form so that they can be read by a broad audience. As a result, this book does not give an exhaustive view of all the subjects addressed during the conference. The main objective of this workshop which gathered about 90 scientists from di?erent ?elds, was to present and confront recent results on the topic of t- bulence in magnetized astrophysical environments. A second objective was to discuss the latest generation of numerical codes, such as those using adaptive mesh re?nement (AMR) techniques. During a plenary discussion at the end of the workshop discussions were held on several topics, often at the heart of vivid controversies. Topics included the timescale for the dissipation of magneto-hydrodynamical (MHD) turbulence, the role of boundary conditions, the characteristics of imbalanced turbulence, the validity of the polytropic approach to Alfv ́en waves support within interst- lar clouds, the source of turbulence inside clouds devoid of stellar activity, the timescale for star formation, the Alfv ́en Mach number of interstellar gas motions, the formation process for helical ?elds in the interstellar medium. The impact of small upon large scales was also discussed.

Numerical Modeling Of Space Plasma Flows Astronum 2014

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Author : Nikolai V. Pogorelov
language : en
Publisher:
Release Date : 2015

Numerical Modeling Of Space Plasma Flows Astronum 2014 written by Nikolai V. Pogorelov and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with Plasma turbulence categories.

This Volume contains the Proceedings of ASTRONUM-2014, the ninth meeting in a series of international conferences organized by the Center for Space Plasma and Aeronomic Research at the University of Alabama in Huntsville, U.S.A. and Maison de la Simulation, CEA-CNRS-INRIAUPsud- UVSQ, France. ¬The subjects of the conference included such topics as turbulence and cosmic ray transport, astrophysical and space plasma flows, kinetic and hybrid simulations, numerical methods, algorithms, and frameworks. All of these topics are of great importance to scientists investigating solar structure, the heliosphere, the Sun-Earth connection, and various astrophysical phenomena related to plasma flows. The plasma phenomena discussed at the conference are characterized by different temporal and spatial scales, regions, and particle populations, for which different sets of defining equations or concepts are necessary to understand the physical systems in their entirety. This book will be of interest to specialists in applied mathematics, astrophysics, space physics, and computer science working on the application of novel numerical algorithms to contemporary problems arising in these fields. It will also be useful to graduate students who want to get acquainted with the fundamental approaches to solving magnetohydrodynamic and kinetic equations governing space plasma flows.