Test Problems: Perturbation

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configure.py options

• Must enable
  • --model=ELBDM
  • --elbdm_scheme=ELBDM_HYBRID
  • --gravity
• Must disable
  • --comoving
  • --particle
• Available options
  • Miscellaneous Options

Default setup

• Study gravitational collapse in one, two and three dimensions (2D by default)
• Use periodic boundary conditions
• Demonstrate refinement in hybrid scheme by using Input__Flag_Interference
• Compared to JeansInstabilityComoving, this test also supports 1D, 2D and 3D collapse

Note

• Evolve small-amplitude plane waves on homogeneous background density

• Perturbation_Amplitude is maximum amplitude of individual perturbations, Perturbation_BgAmplitude is amplitude of background density, Perturbation_N is number of Fourier modes in perturbation (maximum is 4)

• Dimensionality of the problem can be set via Perturbation_NDim (set amplitude of plane waves in other dimensions to zero)

• For reference simulation using base-level spectral method, use MODEL = WAVE and Input__Parameter_BaseSpectral and generate_make_BaseSpectral.sh

Links

Main page of Test Problems