-wlosses: Compute wall losses from H-fields

In this section you may compute the wall losses that stem from the induction of surface currents from magnetic fields. This is a power loss perturbation computation.

 ##############################################################################
 # Flags: nomenu, noprompt, nomessage,                                        #
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 # section: -wlosses                                                          #
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 # symbol    = h_1                                                            #
 # quantity  = h                                                              #
 # solution  = 1                                                              #
 # frequency = auto                     -- [auto | Real]                      #
 # bbxlow =    -1.0000e+30, bbylow =    -1.0000e+30, bbzlow =    -1.0000e+30  #
 # bbxhigh=     1.0000e+30, bbyhigh=     1.0000e+30, bbzhigh=     1.0000e+30  #
 #                                                                            #
 #                                                                            #
 # @metalpower : undefined             (symbol: undefined)                    #
 ##############################################################################
 # doit, ?, return, end, help, ls                                             #
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The conductivities that are used in the pertubation formula may be entered in the section -material. The result of the computation is available as the symbolic variable @metalpower. The wall losses are computed as:

$$\int \int \frac{H^2}{2 \kappa \delta} dF \; ; \; \; \frac{1}{\delta} = \sqrt{ \pi f \mu _0 \kappa }$$

The integration is performed over all metallic surfaces that would appear in a plot as produced by the section -3darrowplot. This implies, that wall losses are NOT computed for electric symmetry planes, since the material on the symmetry planes are not shown in -3darrowplot.

• symbol= QUAN_ISOL:
  This is the full name of the symbol to be processed. This field has to be a 3D-H-field.
• quantity= QUAN:
  This is the first part of the "symbol".
• solution= ISOL:
  This is the last part of the "symbol", the index of the "symbol".
• frequency:
  If "auto", the frequency is taken from the dataset. If frequency is specified as a number, that value is taken for the integrand.
• bbxlow=,bbxhigh=,bbylow=bbyhigh=,bbzlow=,bbzhigh=:
  Specifies the coordinates of a bounding box. Only the metallic surfaces that lie within the box are used for integrating the wall losses.
• doit:
  The integral is performed, the result is shown in the menu. The result is available as the symbol @metalpower for subsequent calculations.