37 lines
1.2 KiB
Markdown
37 lines
1.2 KiB
Markdown
# N-Body project - Checklist
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### Task 1
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- [ ] Compute characteristic quantities/scales
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- [x] Compare analytical model and particle density distribution
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- [ ] Compute forces through nbody simulation
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- [x] vary softening length and compare results
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- [x] compare with the analytical expectation from Newtons 2nd law
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- [ ] compute the relaxation time
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### Task 2 (particle mesh)
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- [ ] Choose reasonable units
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- [ ] Implement force computation on mesh
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- [ ] Find optimal mesh size
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- [ ] Compare with direct nbody simulation
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- [ ] Time integration for direct method AND mesh method
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### Task 2 (tree code)
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- [ ] Implement force computation with multipole expansion
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- [ ] Find optimal grouping criterion
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- [ ] Compare with direct nbody simulation
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- [ ] Time integration for direct method AND tree method
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### Questions
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- Procedure for each time step of a mesh simulation? Potential on mesh -> forces on particles -> update particle positions -> new mesh potential? or skip the creation of particles in each time step?
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- How to represent the time evolution of the system?
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- plot total energy vs time
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- plot particle positions?
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- What is the parameter a of the Hernquist model? |