shadowfax: a public moving-mesh code · 2020. 6. 25. · bert vandenbroucke @drvandenbroucke,...
TRANSCRIPT
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SHADOWFAX: a public moving-mesh code
Bert Vandenbroucke @drvandenbroucke, [email protected]
Ghent University
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Background
GADGET2, Springel (2005)
Agertz et al. (2007)
AREPO, Springel (2010)
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Algorithm
Voronoi mesh
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Algorithm
Hydrodynamics =
Flux exchange
Flux estimated at faces using solution to Riemann problem
𝜌, 𝑣 , 𝑃 𝑚, 𝑝 , 𝐸 𝑉
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Toro, E. F. (2009)
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Algorithm Spherical overdensity
2D 10,000 cells
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SHADOWFAX vs SPH Sod shock
3D 1,024,128 cells/particles
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SHADOWFAX vs SPH Evrard collapse
3D 16,599 cells/particles
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SHADOWFAX vs GIZMO Sod shock
3D 1,024,128 cells/particles
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SHADOWFAX vs AMR Shearing layers
No bulk velocity
High bulk velocity
2D 160,000 cells
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Scaling Strong scaling
Weak scaling
Memory usage
Run time fractions
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Grid
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Outlook
SWIFT
Tree-based
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Outlook
Sub-grid physics: • Cooling/heating • Star formation • Stellar feedback • …
Van Den Bossche, Y., master’s thesis
De Rijcke, S. et al. (2013)
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https://github.com/AstroUGent/shadowfax
ascl:1605.003
Vandenbroucke & De Rijcke (2016)
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http://www.dwarfs.ugent.be/shadowfax
#shadowfax
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