Simulation

Electromagnetic simulation behind our MR-safety work: the concepts each model rests on, and the analyses run with them.

Concept cards

What each modelling concept means, why it holds, and where it stops holding.

• Skin effect & skin depth
  Current crowds toward the surface; δ shrinks as 1/√f.
• AC resistance
  R_ac = 2P/I²; for a round wire R_ac/R_dc depends only on a/δ.
• Proximity effect
  Loss induced by neighbouring conductors’ field.
• Bessel function
  Origin of current crowding in round wires.
• Mutual inductance of offset coils
  M is the B_z flux through the receiver; it changes sign under lateral misalignment.
• Maxwell solver types
  Eight solvers by field formulation and time treatment.

Interactive demos

Single-file browser demos built from a simulation project.

• Magnet MR bench
  Build a magnet, place it in the bore, play a scan sequence; static fields closed-form, eddy-current heating a solid-disc upper bound.

Analyses

One page per simulation project: question, cases, key figures, conclusion.

• (pending)