Magnetic field analysis device, analysis method, and computer readable medium storing program

A magnetic field analysis method comprising:

• dividing a virtual space into a plurality of volume elements and applying magnetization to each of the volume elements;
• and
• computing a magnetic field generated at each of a plurality of observation points in the virtual space by the magnetization applied to the volume elements for each volume element and obtaining a magnetic field generated at each of the plurality of the observation points based on a computation result of each of the plurality of the volume elements,
• wherein, in dividing the virtual space into the plurality of volume elements and applying magnetization to each of the volume elements,
• the virtual space is divided into a plurality of voxels having the same shape and dimension,
• magnetization is applied to each of the plurality of voxels,
• coarse graining for collecting a plurality of the continuous voxels in a first direction to one volume element is performed to make dimension relating to the first direction in the virtual space greater than dimension relating to another second direction on at least a part of the volume elements, and
• magnetization is applied to each of the coarse-grained volume elements based on the magnetization applied to the plurality of the voxels included in each of the coarse-grained volume elements.

A computer readable medium storing a program that causes a computer to realize:

• a function of dividing a virtual space into a plurality of volume elements and applying magnetization to each of the volume elements;
• a function of computing a magnetic field generated at each of a plurality of observation points in the virtual space by the magnetization applied to the volume elements for each volume element and obtaining a magnetic field generated at each of the plurality of the observation points based on a computation result of each of the plurality of the volume elements;
• and
• a function of, in dividing the virtual space into the volume elements, making dimension relating to a first direction in the virtual space greater than dimension relating to another second direction on at least a part of the volume elements
• wherein the function of dividing the virtual space into the plurality of volume elements and applying the magnetization to each of the volume elements includes a function of
• dividing the virtual space into a plurality of voxels having the same shape and dimension,
• applying magnetization to each of the plurality of voxels,
• performing coarse graining for collecting a plurality of the continuous voxels in a first direction to one volume element to make dimension relating to the first direction greater than dimension relating to another second direction on at least a part of the volume elements, and
• applying magnetization to each of the coarse-grained volume elements based on the magnetization applied to the plurality of the voxels included in each of the coarse-grained volume elements.