Transfer project / Physics
Orbital model audit
Construct a computational orbit model and make its numerical error, conservation behavior, and domain of validity visible.
- Candidate
- 0.1-foundations-candidate
- Checkpoints
- 4 local records
- Review
- Independent review pending
Milestones
- 01
Define the system, units, initial conditions, force law, and timestep.
- 02
Reproduce one orbit and plot position, speed, and energy against time.
- 03
Halve the timestep twice and compare trajectory and energy drift.
- 04
State one physical regime and one numerical regime where the model fails.
Deliverables
- Runnable model code and a machine-readable parameter file.
- An energy ledger and timestep convergence figure with visible units.
- A validity note that distinguishes approximation from coding error.
Evidence requirements
- Preserve a coarse-timestep run that visibly fails the audit.
- Explain how the evidence changes one modeling decision.
Reproducibility checks
- A clean run recreates the accepted trajectory and diagnostic figures.
- Halving the timestep changes the reported error in the documented direction.
No grade, ranking, certificate, or public submission. Checkpoints and notes stay in this browser. Recording a checkpoint asserts only that you created inspectable evidence; it does not certify its quality or human review.