Title :
Analysis of In-Bore Magnetic Field for Railguns at Zero Speed
Author :
Qiang Yin;He Zhang;Haojie Li
Abstract :
A two-dimensional transient computational model was built in this paper to analyse the in-bore magnetic field. The current density in the rails and armature had been calculated by solving the reduced magnetic-diffusion equation. Through the calculated current density and the Biot and Savart´s law, the in-bore magnetic field had been calculated. The results show the concentration of current occurs at the left-hand edge of the rail -- armature interface initially, then the current spread to the internal conductor within 1ms. The field point which closer to the origin coordinate has higher value of magneitc flux density.
Keywords :
"Magnetic fields","Rails","Mathematical model","Current density","Railguns","Magnetic flux","Electromagnetics"
Conference_Titel :
Instrumentation and Measurement, Computer, Communication and Control (IMCCC), 2015 Fifth International Conference on
DOI :
10.1109/IMCCC.2015.381