Maxwell coil - QuickField simulation example
A Maxwell coil is a device for producing a region of nearly uniform magnetic field.*
How to find Maxwell coil uniform field region?
Answer Typical applications Geometry
Given Task
Solution
Results
Plot of the flux density along the axis of rotation of Maxwell coils.
* Reference: http://en.wikipedia.org/wiki/Maxwell_Coils
Maxwell coil is similar to Helmholtz coil, but with more complicated construction and better field uniformity.
This construction is formed by the three circular coils, placed on the surface of the virtual sphere. Central and side coils carry specially adjusted currents. Area of the quasi uniform field is located inside the coils.
Engineering question
Solve the axisymmetric DC-magnetic field, map the flux density inside the coil set, and identify the region where the field is sufficiently uniform.
Maxwell coil systems, calibration coil assemblies, laboratory reference coils
Download
Simulation problem
Problem Type
Axisymmetric problem of DC magnetics
R = 1 m,
Current I = 1 A,
Media between the coils is air
Magnetic flux-density distribution and uniform-field region inside a Maxwell coil for the specified coil spacing, dimensions, and excitation current.
Model may be defined and solved as a DC Magnetic Analysis problem.
QuickField results show uniform field on the level of B = 1.176e-6 T.
Related examples