Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Philipp Grete"'
Publikováno v:
The Astrophysical Journal Letters, Vol 942, Iss 2, p L34 (2023)
Magnetized turbulence is ubiquitous in many astrophysical and terrestrial plasmas but no universal theory exists. Even the detailed energy dynamics in magnetohydrodynamic (MHD) turbulence are still not well understood. We present a suite of subsonic,
Externí odkaz:
https://doaj.org/article/32d040b8e0184a7a95de66398e2b9b58
Publikováno v:
The Astrophysical Journal, Vol 951, Iss 2, p 113 (2023)
Motivated by observations of multiphase galaxy outflows, we explore the impact of isotropic and anisotropic electron thermal conduction on the evolution of radiatively cooled, cold clouds embedded in hot, magnetized winds. Using the adaptive-mesh ref
Externí odkaz:
https://doaj.org/article/fa06999910bc4a37bd57de0555b09ecb
Autor:
Philipp Grete, Dimitar G Vlaykov, Wolfram Schmidt, Dominik R G Schleicher, Christoph Federrath
Publikováno v:
New Journal of Physics, Vol 17, Iss 2, p 023070 (2015)
Turbulence in compressible plasma plays a key role in many areas of astrophysics and engineering. The extreme plasma parameters in these environments, e.g. high Reynolds numbers, supersonic and super-Alfvenic flows, however, make direct numerical sim
Externí odkaz:
https://doaj.org/article/c3f916b3081f4748bbe8cf7d3d0995f3
Autor:
Philipp Grete, Joshua C Dolence, Jonah M Miller, Joshua Brown, Ben Ryan, Andrew Gaspar, Forrest Glines, Sriram Swaminarayan, Jonas Lippuner, Clell J Solomon, Galen Shipman, Christoph Junghans, Daniel Holladay, James M Stone, Luke F Roberts
On the path to exascale the landscape of computer device architectures and corresponding programming models has become much more diverse. While various low-level performance portable programming models are available, support at the application level
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8662a6bfb10324171676ffe2b879bb97
In massive objects, such as galaxy clusters, the turbulent velocity dispersion, $\sigma_\mathrm{turb}$, is tightly correlated to both the object mass, $M$, and the thermal energy. Here, we investigate whether these scaling laws extend to lower-mass o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0eaac9c1096a9d9fa973bb1822237c28
http://arxiv.org/abs/2107.12125
http://arxiv.org/abs/2107.12125
Publikováno v:
IEEE Transactions on Plasma Science. 47:2020-2031
Many terrestrial and astrophysical plasmas encompass very large dynamical ranges in space and time, which are not accessible by direct numerical simulations. Thus, idealized subvolumes are often used to study small-scale effects including the dynamic
Magnetized turbulence is ubiquitous in many astrophysical and terrestrial systems but no complete, uncontested theory even in the simplest form, magnetohydrodynamics (MHD), exists. Many theories and phenomenologies focus on the joint (kinetic and mag
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d10ba90ae833832b8d47a97c0b941cdb
http://arxiv.org/abs/2009.03342
http://arxiv.org/abs/2009.03342
Magnetohydrodynamic (MHD) turbulence affects both terrestrial and astrophysical plasmas. The properties of magnetized turbulence must be better understood to more accurately characterize these systems. This work presents ideal MHD simulations of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::57c5bab30ebdd06586950c14ae6eb184
http://arxiv.org/abs/2009.01331
http://arxiv.org/abs/2009.01331
Large scale simulations are a key pillar of modern research and require ever-increasing computational resources. Different novel manycore architectures have emerged in recent years on the way towards the exascale era. Performance portability is requi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d1e2fb39311aa5b7affa32dee86ba296
http://arxiv.org/abs/1905.04341
http://arxiv.org/abs/1905.04341
Autor:
Wolfram Schmidt, Philipp Grete
Publikováno v:
Physical review. E. 100(4-1)
We revisit the problem of how energy transfer through the turbulent cascade operates in compressible hydrodynamic turbulence. In general, there is no conservative compressible cascade since the kinetic and internal energy reservoirs can exchange ener