VI-2. Post Files

EMSolution writes distribution data files. Specify the file format with POST_DATA_FILE(10.2) in Section 10.2, Output Files.

For standard file formats (other than CADAS and HyperView output), each distribution quantity is written to a separate file.

For CADAS output, all distribution quantities are written in CADAS format to the single post.cad file. Specify POST_DATA_FILE=6 to use CADAS format. You can use the result as a CADAS input file by concatenating the separately written post_geom mesh file before this file. The following lists physical-quantity names (VNAME) in CADAS files.

For HyperView output, as with CADAS output, all distribution quantities are written in HyperView format to the single post.hwascii file.

File magnetic

MAGNETIC(10.3) writes magnetic flux density distributions. The unit of magnetic flux density is \(T \, (Wb/m^2)\).

<When ELEM_OUT(10.2) =1 is specified in the input file>

Element quantity (evaluated at the element centroid)

• Magnetic flux density x-component (B-X)

• Magnetic flux density y-component (B-Y)

• Magnetic flux density z-component (B-Z)

• Magnetic flux density magnitude (B-SQR)

<When NODE_OUT(10.2) =1 is specified in the input file>

Nodal quantity (magnetic flux density is the simple average of values at nodes of elements connected to the node)

• Magnetic flux density x-component (B-X)

• Magnetic flux density y-component (B-Y)

• Magnetic flux density z-component (B-Z)

• Magnetic flux density magnitude (B-SQR)

• Magnetic flux (Wb)* (FLUX)

Written for two-dimensional calculations ( GEOMETRY(12) =1 or 2).

• For GEOMETRY(12) =1: magnetic flux passing through DELTA_Z_THETA(12).

• For GEOMETRY(12) =2: magnetic flux passing through DELTA_Z_THETA(12) * r.

Here, DELTA_Z_THETA(12) is defined in the input file. See the following figure.

Magnetic-flux calculation surface for two-dimensional calculations

File current

CURRENT(10.3) writes current density distributions. The unit of current density is \(A/m^2\). Output is produced for conductor regions (eddy-current regions and regions specified by ELMCUR(17.2), SDEFCOIL(17.3), PHICOIL(17.4), DCCURR(17.5), or SUFCUR(17.6)).

<When ELEM_OUT(10.2) =1 is specified in the input file>

Element quantity (evaluated at the element centroid)

• Current density x-component (J-X)

• Current density y-component (J-Y)

• Current density z-component (J-Z)

• Current density magnitude (J-SQR)

• Joule heat-generation distribution (W/m³) (Q)

<When NODE_OUT(10.2) =1 is specified in the input file>

Nodal quantity (the simple average of values at nodes of conductor elements connected to the node)

• Current density x-component (J-X)

• Current density y-component (J-Y)

• Current density z-component (J-Z)

• Current density magnitude (J-SQR)

• Joule heat-generation distribution (W/m³) (Q)

File surface_current

SURFACE_IMPEDANCE(16.2) writes current density distributions for surface-impedance surfaces. The unit is \(A/m\); this is surface current density, representing current integrated in the direction normal to the surface.

<When ELEM_OUT(10.2) =1 is specified in the input file>

Element quantity (evaluated at the element centroid)

• Current density x-component (JS-X)

• Current density y-component (JS-Y)

• Current density z-component (JS-Z)

• Current density magnitude (JS-SQR)

• Joule heat-generation distribution (W/m²) (Q)

<When NODE_OUT(10.2) =1 is specified in the input file>

Nodal quantity (the simple average of values at nodes of impedance-surface elements connected to the node)

• Current density x-component (JS-X)

• Current density y-component (JS-Y)

• Current density z-component (JS-Z)

• Current density magnitude (JS-SQR)

File force

FORCE_NODAL(10.3) writes electromagnetic forces calculated by the nodal-force method.

<When ELEM_OUT(10.2) =1 is specified in the input file>

Element quantity (nodal forces are distributed to elements connected to the node, excluding air, with volume weighting)

• Electromagnetic force x-component (NFOR-X)

• Electromagnetic force y-component (NFOR-Y)

• Electromagnetic force z-component (NFOR-Z)

• Electromagnetic force magnitude (NFOR-SQR)

<When NODE_OUT(10.2) =1 is specified in the input file>

Nodal quantity (writes nodal force in \(N\))

• Electromagnetic force x-component (NFOR-X)

• Electromagnetic force y-component (NFOR-Y)

• Electromagnetic force z-component (NFOR-Z)

• Electromagnetic force magnitude (NFOR-SQR)

File surface_force

Writes nodal electromagnetic forces calculated by the nodal-force method for surface elements when FORCE_NODAL(10.3) =3.

Nodal quantity (writes nodal force in \(N\))

• Electromagnetic force x-component (NFOR-X)

• Electromagnetic force y-component (NFOR-Y)

• Electromagnetic force z-component (NFOR-Z)

• Electromagnetic force magnitude (NFOR-SQR)

File force_J_B

FORCE_J_B(10.3) writes electromagnetic forces calculated by volume integration of the Lorentz force.

<When ELEM_OUT(10.2) =1 is specified in the input file>

Element Quantity

• Electromagnetic force x-component (LFOR-X)

• Electromagnetic force y-component (LFOR-Y)

• Electromagnetic force z-component (LFOR-Z)

• Electromagnetic force magnitude (LFOR-SQR)

<When NODE_OUT(10.2) =1 is specified in the input file>

Nodal quantity (writes nodal force in \(N\))

• Electromagnetic force x-component (LFOR-X)

• Electromagnetic force y-component (LFOR-Y)

• Electromagnetic force z-component (LFOR-Z)

• Electromagnetic force magnitude (LFOR-SQR)

File heat

HEAT(10.3) writes heat-generation density and heat generation in each element. For transient analysis, it writes values at each step (AVERAGE(10.2) =0) or time-averaged values (AVERAGE(10.2) =1). For AC steady-state analysis, it writes values at each output phase (AVERAGE(10.2) =0) or values averaged over one cycle (AVERAGE(10.2) =1).

<When HEAT(10.3) =1 is specified in the input file>

Element Quantity

• Heat-generation density (W/m³) (HEAT-DEN)

• Heat generation (W) (HEAT-VOL)

Writes each element’s element ID, material-property ID, centroid XYZ coordinates (m), and element-average heat generation (W/m³).

File surface_heat

HEAT(10.3) writes the average heat generation of each surface-impedance element over one cycle when the surface-impedance method is used in AC steady-state analysis (HEAT(10.3) =1 and AVERAGE(10.2) =1). Heat generation in each element is volume-integrated.

Element Quantity

• Surface heat-generation density (W/m²) (SHEAT-DEN)

• Heat generation (W) (SHEAT-VOL)

File disp

DISP(10.3) writes displacements of each node in the moving part for analyses that include motion (when DISP(10.3) =1).

Nodal Quantity

• Displacement x-component (m) (DISP-X)

• Displacement y-component (m) (DISP-Y)

• Displacement z-component (m) (DISP-Z)

• Displacement magnitude (m) (DISP-SQR)

File magnetization

MAGNETIZATION(10.3) writes element magnetization or magnetic field strength, and demagnetization ratio and permeance coefficient when MAGNET(17.7) is used.

<When MAGNETIZATION(10.3) =1 is specified in the input file>

Writes magnetization as an element quantity in \(T \, (Wb/m^2)\).

• Magnetization x-component (M-X)

• Magnetization y-component (M-Y)

• Magnetization z-component (M-Z)

• Magnetization magnitude (M-SQR)

<When MAGNETIZATION(10.3) =-1 is specified in the input file>

Writes magnetic field strength as an element quantity in \(A/m\).

• Magnetic field strength x-component (M-X)

• Magnetic field strength y-component (M-Y)

• Magnetic field strength z-component (M-Z)

• Magnetic field strength magnitude (M-SQR)

<When MAGNETIZATION(10.3) =2 is specified in the input file>

Writes the demagnetization ratio and permeance coefficient (\(H\)) as element quantities.

• Demagnetization ratio (M-X)

• Permeance coefficient (M-Y)

File electric

E(10.3) writes electric potential, electric flux density, electric field strength, and current density distributions. Units are \(V\), \(C/m^2\), \(V/m\), and \(A/m^2\), respectively.

Written for electrostatic analysis (STATIC(2) =2) when CURRENT(10.3) =1.

<When ELEM_OUT(10.2) =1 is specified in the input file>

Element quantity (evaluated at the element centroid)

• Electric flux density x-component (D-X)

• Electric flux density y-component (D-Y)

• Electric flux density z-component (D-Z)

• Electric flux density magnitude (D-SQR)

• Electrostatic energy density (J/m³) (E-DEN)

Note: For implementation reasons, electrostatic energy density uses the same value as electric potential for NODE_OUT.

<When NODE_OUT(10.2) =1 is specified in the input file>

Nodal quantity (the simple average of values at nodes of elements connected to the node)

• Electric flux density x-component (D-X)

• Electric flux density y-component (D-Y)

• Electric flux density z-component (D-Z)

• Electric flux density magnitude (D-SQR)

• Electric potential \((V)\) (V)

Written for electrostatic analysis (STATIC(2) =2) when CURRENT(10.3) =2.

<When ELEM_OUT(10.2) =1 is specified in the input file>

Element quantity (evaluated at the element centroid)

• Electric field strength x-component (E-X)

• Electric field strength y-component (E-Y)

• Electric field strength z-component (E-Z)

• Electric field strength magnitude (E-SQR)

• Electrostatic energy density (J/m³) (E-DEN)

Note: For implementation reasons, electrostatic energy density uses the same value as electric potential for NODE_OUT(10.2).

<When NODE_OUT(10.2) =1 is specified in the input file>

Nodal quantity (the simple average of values at nodes of elements connected to the node)

• Electric field strength x-component (E-X)

• Electric field strength y-component (E-Y)

• Electric field strength z-component (E-Z)

• Electric field strength magnitude (E-SQR)

• Electric potential \((V)\) (V)

Written for steady current-field analysis (STATIC(2) =3) when CURRENT(10.3) =1.

<When ELEM_OUT(10.2) =1 is specified in the input file>

Element quantity (evaluated at the element centroid)

• Current density x-component (J-X)

• Current density y-component (J-Y)

• Current density z-component (J-Z)

• Current density magnitude (J-SQR)

• Joule heat-generation distribution \((W/m^3)\) (Q)

<When NODE_OUT(10.2) =1 is specified in the input file>

Nodal quantity (the simple average of values at nodes of elements connected to the node)

• Current density x-component (J-X)

• Current density y-component (J-Y)

• Current density z-component (J-Z)

• Current density magnitude (J-SQR)

• Electric potential \((V)\) (V)

File iron_loss

To calculate iron loss with IRON_LOSS(10.3), first specify the iron-loss calculation method (IRON_LOSS(11)).

<When IRON_LOSS(11) =1 or 2 and IRON_LOSS(11) =1 are specified in the input file>

Writes loss in \(W\) and loss density in \(W/kg\) as element quantities.

• Lamination-direction eddy-current loss density (\(W/kg\)) (EL-DEN)

• Lamination-direction eddy-current loss (\(W\)) (EL-VOL)

• Hysteresis loss density (\(W/kg\)) (HL-DEN)

• Hysteresis loss (\(W\)) (HL-VOL)

<When IRON_LOSS(11) =1 or 2 and IRON_LOSS(11) =2 are specified in the input file>

Writes loss in \(W\) and loss density in \(W/m^3\) as element quantities.

• Lamination-direction eddy-current loss density (\(W/m^3\)) (EL-DEN)

• Lamination-direction eddy-current loss (\(W\)) (EL-VOL)

• Hysteresis loss density (\(W/m^3\)) (HL-DEN)

• Hysteresis loss (\(W\)) (HL-VOL)

<When IRON_LOSS(11) =3 and IRON_LOSS(11) =2 are specified in the input file>

Writes loss in \(W\) and loss density in \(W/m^3\) as element quantities.

• Hysteresis loss density (\(W/m^3\)) (HL-DEN)

• Hysteresis loss (\(W\)) (HL-VOL)

File COIL_force

COIL_FORCE(10.3) writes electromagnetic forces calculated by volume integration of the Lorentz force for COIL integration elements ( MESH-(17.1.8) ) ( LOOP-(17.1.8), GCE-(17.1.8), ARC-(17.1.8), and MESH-(17.1.8) ) to the output print-output file. With CALC_IND(4) =1 and COIL_FORCE(10) =1, only element quantities are written. The distribution data below are written only when MESHED_COIL MESH(17.1.7) is used. MESHED_COIL MESH(17.1.7) is not written to the post_geom file.

<When ELEM_OUT(10.2) =1 is specified in the input file>

Element quantity (total element force is written in \(N\))

• Electromagnetic force x-component (LFOR-X)

• Electromagnetic force y-component (LFOR-Y)

• Electromagnetic force z-component (LFOR-Z)

• Electromagnetic force magnitude (LFOR-SQR)

File COIL_current (for verification)

Writes the current distribution of MESHED_COIL elements ( MESH(17.1.7) ) for verification. It is written automatically when MESHED_COIL elements are used.

<When ELEM_OUT(10.2) =1 is specified in the input file>

Element quantity (evaluated at the element centroid)

• Current density x-component (J-X)

• Current density y-component (J-Y)

• Current density z-component (J-Z)

• Current density magnitude (J-SQR)