In-Lab Shallow-Water Simulations of Gaseous Discs for Astrophysical Fluid Dynamics [PDF]
, 2012 G. P. Chernikov +4 more
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Entropy-conserving Scheme for Modeling Nonthermal Energies in Fluid Dynamics Simulations [PDF]
Astrophysical Journal Supplement Series, 2021 We compare the performance of energy-based and entropy-conserving schemes for modeling nonthermal energy components, such as unresolved turbulence and cosmic rays, using idealized fluid dynamics tests and isolated galaxy simulations.
V. Semenov, A. Kravtsov, B. Diemer
semanticscholar +1 more source
Analytical results for binary dynamics at the first post-Newtonian order in Einstein-Cartan theory with the Weyssenhoff fluid [PDF]
Physical Review D, 2023 The quantum spin effects inside matter can be modeled via the Weyssenhoff fluid, which permits to unearth a formal analogy between general relativity and Einstein-Cartan theory at the first post-Newtonian order.
Vittorio De Falco, E. Battista
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Non-linear dynamics of hydrodynamic tori as a model of oscillations and bending waves in astrophysical discs [PDF]
Monthly notices of the Royal Astronomical Society, 2021 Understanding oscillations and waves in astrophysical fluid bodies helps to elucidate their observed variability and the underlying physical mechanisms.
Callum W. Fairbairn, G. Ogilvie
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Tidally Forced Planetary Waves in the Tachocline of Solar-like Stars
The Astrophysical Journal, 2023 Can atmospheric waves in planet-hosting solar-like stars substantially resonate to tidal forcing, perhaps at a level of impacting the space weather or even being dynamo-relevant?
Gerrit M. Horstmann +4 more
doaj +1 more source
Formulating the r-mode Problem for Slowly Rotating Neutron Stars
The Astrophysical Journal, 2023 We revisit the problem of inertial r-modes in stratified stars, drawing on a more precise description of the composition stratification in a mature neutron star.
Nils Andersson, Fabian Gittins
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How the growth of ice depends on the fluid dynamics underneath
Proceedings of the National Academy of Sciences of the United States of America, 2021 Significance Landscapes, resulting from ice–water interactions coupled with solidification/melting, are ubiquitous in nature, yet most previous studies have not considered the rich fluid dynamics induced by water density anomaly underneath the moving ice
Ziqi Wang +3 more
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On Secular Gravitational Instability in Vertically Stratified Disks
The Astrophysical Journal, 2023 Secular gravitational instability (GI) is one promising mechanism for explaining planetesimal formation. Previous studies of secular GI utilized a razor-thin disk model and derived the growth condition in terms of vertically integrated physical values ...
Ryosuke T. Tominaga +2 more
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SPROUT: A Moving-mesh Hydro Code Using a Uniformly Expanding Cartesian Grid
The Astrophysical Journal Supplement Series, 2023 We present the publicly available moving-mesh hydrodynamics code Sprout . Sprout solves the equations of ideal hydrodynamics on an expanding Cartesian mesh.
Soham Mandal, Paul C. Duffell
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