Simulation based study of magnetic velocity induction system by using Analysis System Electromagnetics Suite.

Area of Science:

• Physics
• Materials Science
• Engineering

Background:

• Magnetic velocity induction system (MAVIS) is crucial for velocimetry in shock compression experiments.
• Discrepancies in induced voltage amplitude necessitate accurate simulation methods.

Purpose of the Study:

• To design and simulate a MAVIS for determining induced voltage amplitude and flyer velocity.
• To validate simulation results with experimental data and investigate factors affecting induced EMF.
• To propose an improved MAVIS design for enhanced accuracy.

Main Methods:

• Developed a three-dimensional model of MAVIS.
• Performed simulations using Analysis System Electromagnetics Suite.
• Conducted experiments and compared results based on flyer dimensions and velocity.
• Analyzed the impact of flyer radius and velocity on induced electromotive force (EMF).

Main Results:

• Flyer velocity and radius significantly influence induced EMF.
• Identified a cut-off radius for flyers based on induced EMF.
• Simulation data showed good agreement with experimental results within the experimental error range, accounting for eddy current loss.
• A redesigned MAVIS with three pick-up coils reduced experimental uncertainty in flyer velocity to <0.4%.

Conclusions:

• MAVIS simulations provide an accurate and economical framework for projectile velocity calculation.
• The redesigned MAVIS enhances signal quality and reduces experimental uncertainty.
• MAVIS is a valuable tool for estimating oscilloscope trigger levels before experiments.