Amela

AMELA can be executed as a batch process in femagtools. Amela object will search the AMELA batch file and the FEMAG model file in the given directories. The magnet data for the loss calculation will be extracted from the FEMAG model file.

• If the FEMAG model file (nc file) is located in the same directory as AMELA. Only the workdir is needed.

Example:

amela = Amela(workdir, dict(name='example'))
r = amela()
loss = r['pm_data_se38']['total_loss']
print(f'loss in the superelement 38 is: {loss} W')

• If the FEMAG model file (nc file) is located in a different directory as AMELA. Both the workdir (nc file) and amela_dir (AMELA.bat or AMELA.sh) need to be input.

Example:

amela = Amela(workdir, dict(name='example'), \
             amela_dir)
r = amela()
loss = r['pm_data_se38']['total_loss']
print(f'loss in the superelement 38 is: {loss} W')

The circumferential and axial segmentation are optional parameters and can be passed in the same dictionary.

Example:

magnet_data = dict(name='example',
                   nseglen=3)
amela = Amela(workdir, magnet_data, \
             amela_dir)

list of all the optional parameters:

speed	rotational speed (1/min)
sigma	electrical conductivity (S/m)
nsegwid	number of circumferential segments
nseglen	number of axial segments

The return values of the Amela object is a dictionary that contains the loss data:

loss_data	time dependable loss value
total_loss	total loss in the superelement (averaged over time step)