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The Development Of Collisional Drift Wave Turbulence
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Book Synopsis The Development of Collisional-Drift-Wave Turbulence by : Hans William Hendel
Download or read book The Development of Collisional-Drift-Wave Turbulence written by Hans William Hendel and published by . This book was released on 1969 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Three-D Collisional Drift Wave Turbulence, Role of Magnetic Shear by : Andreas Zeiler
Download or read book Three-D Collisional Drift Wave Turbulence, Role of Magnetic Shear written by Andreas Zeiler and published by . This book was released on 1996 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Theory of Tokamak Edge Turbulence by : Andrew S. Ware
Download or read book Theory of Tokamak Edge Turbulence written by Andrew S. Ware and published by . This book was released on 1992 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Modelling of Drift Wave Turbulence with a Finite Ion Temperature Gradient by :
Download or read book Modelling of Drift Wave Turbulence with a Finite Ion Temperature Gradient written by and published by . This book was released on 1990 with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the use of consistent orderings in {var epsilon} = [rho]{sub s}/a and [delta] = k{sub {perpendicular}}[rho]{sub s} model equations are derived for the drift instabilities from the electrostatic two-fluid equations. The electrical resistivity [eta] included in the system allows the dynamics of both the collisional drift wave instability ([eta] ≠ 0) and the collisionless ion temperature gradient driven instability ([eta] = 0). The model equations used extensively in earlier nonlinear studies are obtained as appropriate limits of the model equations derived in the present work. The effects of sheared velocity flows in the equilibrium plasma and electron temperature fluctuations are also discussed. 14 refs.
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1975-06 with total page 1162 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fusion Energy Update written by and published by . This book was released on 1978 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1991 with total page 604 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Journal of the Physical Society of Japan by :
Download or read book Journal of the Physical Society of Japan written by and published by . This book was released on 2007 with total page 716 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Successive Bifurcations to Chaotic State in the Nonlinear Evolution of Collisional Drift Wave by : Fujio Kako
Download or read book Successive Bifurcations to Chaotic State in the Nonlinear Evolution of Collisional Drift Wave written by Fujio Kako and published by . This book was released on 1979 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Investigations of the Validity of Quasilinear Theory and the Dynamics of Drift Wave Turbulence by : Yi-Ming Liang
Download or read book Investigations of the Validity of Quasilinear Theory and the Dynamics of Drift Wave Turbulence written by Yi-Ming Liang and published by . This book was released on 1993 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ecology of Flows and Drift Wave Turbulence by : Rima Hajjar
Download or read book Ecology of Flows and Drift Wave Turbulence written by Rima Hajjar and published by . This book was released on 2018 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this dissertation, we present advances in turbulence modeling for magnetically confined plasmas. We investigate the ecology of microscopic drift wave turbulence and the self-generated macroscopic flows in magnetically confined plasmas. We formulate reduced models that self-consistently describe the evolution of turbulence and mean plasma profiles (including flows) and recover trends obtained from the CSDX device and HL-2A tokamak. The dissertation is divided to three parts. The first part presents a reduced model that describes the interplay between drift wave turbulence and zonal and axial flows in the adiabatic plasma of CSDX, where the electron response is Boltzmann. The model explains how free energy released from the density gradient accelerates both axial and azimuthal flows in CSDX. A description of the interactions between the disparate scales of the plasma via the parallel and perpendicular Reynolds stresses $\langle \tilde v_x \tilde v_z \rangle $ and $\langle \tilde v_x \tilde v_y \rangle $ is presented. Expressions for these stresses are decomposed into a diffusive component that relaxes the flow profile, and a residual stress responsible for accelerating the corresponding flow. Moreover, parallel and perpendicular flow dynamics are described using an extended mixing length approach. This accounts for the degree of symmetry breaking in the parallel direction and parametrizes the efficiency of $\nabla n$ in driving the axial flow. In the second part of the dissertation, the relationship between drift waves and zonal flows is examined in depth via a more specific model. Analytical results obtained from this model confirm the published experimental data showing a suppression of turbulence with the increase in magnitude of the magnetic field \textbf{B}. A new criterion for access to enhanced confinement is introduced. This criterion captured by the dimensionless quantity $R_{DT}$, compares the production rate of turbulent enstrophy due to relaxation of the mean profiles, to the corresponding destruction rate via coupling to the mean flow. When $R_{DT} >1$, the profiles steepen and enhanced confinement is accessible. In the third paper, a novel idea for understanding the physics of the density limit problem in low $\beta$ tokamaks is presented. The collapse of the zonal shear flow when the electron response transitions from Boltzmann to hydrodynamic scaling, along with cooling of the edge and the onset of MHD activity is predicted by the observation that the zonal flow drive will drop as the electron parallel diffusion time increases with density. This leads to a simple, verified understanding of the density limit phenomenon in $L$-modes.
Book Synopsis Multi-scale Interaction of DriftWave Turbulence with Large Scale Shear Flows by : Christopher J. McDevitt
Download or read book Multi-scale Interaction of DriftWave Turbulence with Large Scale Shear Flows written by Christopher J. McDevitt and published by . This book was released on 2008 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: Multi-scale methods are utilized within the context of strongly magnetized plasmas to describe the interaction of drift wave turbulence with large scale flow structures. The specific contexts treated correspond to transport barrier formation, magnetic island evolution in the presence of drift wave turbulence, and plasma rotation. Emphasis is placed on identifying critical feedback mechanisms via the study of simple, reduced models, rather than the detailed description of isolated components of the system. In Chapter 2 a two component self-consistent model is derived to investigate a novel mechanism of transport barrier formation. It is found that intense cellular flow, driven by modulational instability of the background turbulence provides a viable candidate mechanism for triggering transport barrier formation in regimes of weak magnetic shear. Similarly, the nonlinear modification of the drift wave phase space topology by the cellular flow is investigated. The presence of a weak non-integrable perturbation in the effective Hamiltonian of the drift wave turbulence, induced by the non-axisymmetric component of the cellular flow, is found to circumvent nonlinear wave trapping as a means of quenching the secondary instability drive of the large scale flow. In Chapter 3, the interaction of a tearing mode with drift wave turbulence is discussed. Wave kinetics and adiabatic theory are utilized to treat the feedback of tearing mode flows on the drift wave turbulence. The stresses exerted by the self-consistently evolved drift wave population density on the tearing mode are calculated by mean field methods. The principal effect of the drift waves is to pump the resonant low-m mode via a negative viscosity, consistent with the classical notion of an inverse cascade in quasi 2-D turbulence. In Chapter 4, the multi-scale methods utilized above are extended to describe the transport of parallel momentum. The primarily fluid description employed above is extended to include momentum exchange between waves and resonant particles. A quasi-linear momentum conservation theorem is proven, demonstrating that the total momentum flux can be decomposed into wave and resonant particle fluxes. Quasi-linear expressions for the radial transport of parallel momentum induced both by waves and resonant particles are derived, providing a comprehensive quasi-linear description of parallel momentum transport induced by electrostatic drift wave turbulence.
Book Synopsis Annual Report by : Princeton University. Plasma Physics Laboratory
Download or read book Annual Report written by Princeton University. Plasma Physics Laboratory and published by . This book was released on 1970 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis ERDA Energy Research Abstracts by : United States. Energy Research and Development Administration
Download or read book ERDA Energy Research Abstracts written by United States. Energy Research and Development Administration and published by . This book was released on 1977 with total page 776 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :United States. Energy Research and Development Administration. Technical Information Center Publisher : ISBN 13 : Total Pages :1066 pages Book Rating :4.3/5 (129 download)
Book Synopsis ERDA Energy Research Abstracts by : United States. Energy Research and Development Administration. Technical Information Center
Download or read book ERDA Energy Research Abstracts written by United States. Energy Research and Development Administration. Technical Information Center and published by . This book was released on 1977 with total page 1066 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Nonlinear Radial Propagation of Drift Wave Turbulence by : Manju Prakash
Download or read book Nonlinear Radial Propagation of Drift Wave Turbulence written by Manju Prakash and published by . This book was released on 1985 with total page 101 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Real Space Diffusion in Drift Wave Turbulence by : Edward Kyle Robinson
Download or read book Real Space Diffusion in Drift Wave Turbulence written by Edward Kyle Robinson and published by . This book was released on 1987 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: