(19)
(11) EP 1 434 150 A8

(12) CORRECTED EUROPEAN PATENT APPLICATION
published in accordance with Art. 158(3) EPC

(48) Corrigendum issued on:
27.10.2004 Bulletin 2004/44

(43) Date of publication:
30.06.2004 Bulletin 2004/27

(21) Application number: 02797880.8

(22) Date of filing: 06.09.2002
(51) International Patent Classification (IPC)7: G06F 17/50
(86) International application number:
PCT/JP2002/009131
(87) International publication number:
WO 2003/023659 (20.03.2003 Gazette 2003/12)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 06.09.2001 JP 2001270957

(71) Applicant: The Japan Research Institute, Limited
Tokyo 102-0082 (JP)

(72) Inventors:
  • TANI, Koji; c/o The Japan Research Institute Ltd.
    Osaka-shi, Osaka 550-0013 (JP)
  • OGAWA, T.; c/o The Japan Research Institute Ltd.
    Osaka-shi, Osaka 550-0013 (JP)

(74) Representative: Selting, Günther, Dipl.-Ing. 
Deichmannhaus am Dom, Postfach 10 22 41
50462 Köln
50462 Köln (DE)

   


(54) THREE-DIMENSIONAL MESH GENERATING METHOD, MAGNETIC FIELD ANALYSIS METHOD FOR ROTATING MACHINE, THREE-DIMENSIONAL MESH GENERATING DEVICE, MAGNETIC FIELD ANALYSIS DEVICE FOR ROTATING MACHINE, COMPUTER PROGRAM, AND RECORDING MEDIUM


(57) A two-dimensional mesh is generated on a plane perpendicular to the rotation axis. At this time, a ring-shaped gap is provided between the rotor and the stator, and portions facing the ring-shaped gap are equally divided into the same number of parts. An initial three-dimensional mesh is generated by joining together a plurality of two-dimensional meshes in the direction of the rotation axis while rotating the two-dimensional meshes. A boundary surface is formed in a cylindrical gap composed of a stack of the ring-shaped gaps, and a three-dimensional mesh is generated by filling the cylindrical gap with a plurality of polyhedrons, including polyhedrons comprising each of surface elements constituting the stator-side mesh surface, rotor-side mesh surface and boundary surface as one face.