Search Results - "Hammett, Gregory W"

Astrophysical Gyrokinetics: Basic Equations and Linear Theory by Howes, Gregory G, Cowley, Steven C, Dorland, William, Hammett, Gregory W, Quataert, Eliot, Schekochihin, Alexander A

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Shearing Box Simulations of the MRI in a Collisionless Plasma by Sharma, Prateek, Hammett, Gregory W, Quataert, Eliot, Stone, James M

“…We describe local shearing box simulations of turbulence driven by the magnetorotational instability (MRI) in a collisionless plasma. Collisionless effects may…”
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The Magnetorotational Instability in a Collisionless Plasma by Quataert, Eliot, Dorland, William, Hammett, Gregory W

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Transition from Collisionless to Collisional Magnetorotational Instability by Sharma, Prateek, Hammett, Gregory W, Quataert, Eliot

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A fast semi-implicit method for anisotropic diffusion by Sharma, Prateek, Hammett, Gregory W.

“…Simple finite differencing of the anisotropic diffusion equation, where diffusion is only along a given direction, does not ensure that the numerically…”
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Preserving monotonicity in anisotropic diffusion by Sharma, Prateek, Hammett, Gregory W.

“…We show that standard algorithms for anisotropic diffusion based on centered differencing (including the recent symmetric algorithm) do not preserve…”
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Electron Heating in Hot Accretion Flows by Sharma, Prateek, Quataert, Eliot, Hammett, Gregory W, Stone, James M

“…Local (shearing box) simulations of the nonlinear evolution of the magnetorotational instability in a collisionless plasma show that angular momentum transport…”
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Conservative discontinuous Galerkin interpolation: Sheared boundary conditions by Francisquez, Manaure, Mandell, Noah R., Hakim, Ammar, Hammett, Gregory W.

“…Local studies of accretion disks and laboratory magnetized plasmas employ analytical coordinate mappings that introduce sheared boundary conditions (BCs). We…”
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Conservative discontinuous Galerkin interpolation: Sheared boundary conditions by Francisquez, Manaure, Mandell, Noah R., Hakim, Ammar, Hammett, Gregory W.

“…Local studies of accretion disks and laboratory magnetized plasmas employ analytical coordinate mappings that introduce sheared boundary conditions (BCs)…”
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Elecron heating in hot accretion flows by SHARMA, Prateek, QUATAERT, Eliot, HAMMETT, Gregory W, STONE, James M

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Fluid moment models for Landau damping with application to the ion-temperature-gradient instability by Hammett, GW, Perkins, FW

“…A closed set of fluid moment equations is developed which represents kinetic Landau damping physics and which takes a simple form in wave-number space. The…”
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Mapped discontinuous Galerkin interpolations and sheared boundary conditions by Francisquez, Manaure, Mandell, Noah R, Hakim, Ammar, Hammett, Gregory W

“…Translations or, more generally, coordinate transformations of scalar fields arise in several applications, such as weather, accretion disk and magnetized…”
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Towards continuum gyrokinetic study of high-field mirrors by Francisquez, Manaure, Rosen, Maxwell H, Mandell, Noah R, Hakim, Ammar, Forest, Cary B, Hammett, Gregory W

“…High-temperature superconducting (HTS) magnetic mirrors under development exploit strong fields with high mirror ratio to compress loss cones and enhance…”
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Improved multispecies Dougherty collisions by Francisquez, Manaure, Juno, James, Hakim, Ammar, Hammett, Gregory W, Ernst, Darin R

“…The Dougherty model Fokker-Planck operator is extended to describe nonlinear full-f collisions between multiple species in plasmas. Simple relations for…”
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Conservative discontinuous Galerkin scheme of a gyro-averaged Dougherty collision operator by Francisquez, Manaure, Bernard, Tess N, Mandell, Noah R, Hammett, Gregory W, Hakim, Ammar

“…Nuclear Fusion, Volume 60, Number 9 (2020) A conservative discontinuous Galerkin scheme for a nonlinear Dougherty collision operator in full-f long-wavelength…”
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Fluid & Gyrokinetic turbulence in open field-line, helical plasmas by Francisquez, Manaure, Bernard, Tess N, Zhu, Ben, Hakim, Ammar, Rogers, Barrett N, Hammett, Gregory W

“…Two-fluid Braginskii codes have simulated open-field line turbulence for over a decade, and only recently has it become possible to study these systems with…”
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Investigating shear flow through continuum gyrokinetic simulations of limiter biasing in the Texas Helimak by Bernard, Tess N, Stoltzfus-Dueck, Timothy, Gentle, Kenneth W, Hakim, Ammar, Hammett, Gregory W, Shi, Eric L

“…Previous limiter-biasing experiments on the Texas Helimak, a simple magnetized torus, have been inconclusive on the effect of flow shear on turbulence levels…”
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Full-$f$ gyrokinetic simulation of turbulence in a helical open-field-line plasma by Shi, Eric L, Hammett, Gregory W, Stoltzfus-Dueck, Timothy, Hakim, Ammar

“…Physics of Plasmas 26, 012307 (2019) Curvature-driven turbulence in a helical open-field-line plasma is investigated using electrostatic five-dimensional…”
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Gyrokinetic continuum simulations of plasma turbulence in the Texas Helimak by Bernard, Tess N, Shi, Eric L, Gentle, Kenneth, Hakim, Ammar, Hammett, Gregory W, Stoltzfus-Dueck, Timothy, Taylor, Edward I

“…The first gyrokinetic simulations of plasma turbulence in the Texas Helimak device, a simple magnetized torus, are presented. The device has features similar…”
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A Fast Semi-implicit Method for Anisotropic Diffusion by Sharma, Prateek, Hammett, Gregory W

“…Simple finite differencing of the anisotropic diffusion equation, where diffusion is only along a given direction, does not ensure that the numerically…”
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