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《Journal of West Anhui University》 2014-02
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Numerical Simulation on the Magnetic Field of Circular Current and Helmholtz Coil

ZHANG Degen;ZHANG Bo;Center of Basic Experiment,West Anhui University;  
Based on the Biot-Savart law and superposition principle of magnetic field,the magnetic field distribution with integral expressions were derived for circular current and the Helmholtz coil.By using Mathematica software to numerical calculation,the numerical solution of magnetic field distribution was obtained and the distributional images of the magnetic field of circular current and Helmholtz coil were drawn,at the same time the both of uniform magnetic field were made analysis and comparison.In the perpendicular to the central axis plane,the uniform magnetic field of Helmholtz coil was 10.4times size of the circular current;in the axial plane the former was 5.4times size of the latter.At last by comparatively analysis the uniform magnetic field(±1%)of the Helmholtz coil,the result of numerical calculation was in good agreement with the relevant experimental measurement.
【Fund】: 六安市定向委托皖西学院市级研究项目(2012LW005)
【CateGory Index】: O441.2
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