檢視 ITRI-NTU 3D-FDTD 的原始碼

3D-FDTD is called from three dimensional finite difference time domain method. This program models computational electrodynamics which is refer to the book ''Computational Electrodynamics: The Finite-Difference Time-Domain Method, Third Edition, by Allen Taflove''.


== Input file 1: commands and parameters ==
<font size=3 color=red>'''Be careful:'''</font> Although most sequences of functions are not important, the function [[$NumberofObject]] '''MUST''' appear before the function [[$MaterialStructure]] and [[$MaterialParameter]]. 

===  Files setting ===
[[$SParameterDirectory]]<br>

[[$OutputDirectory]]<br>

[[$OutputName]]<br>

[[$OutputMaxReflection]]<br>


===  Unit setting ===
[[$UnitConvert]]<br>


=== Time setting ===
[[$TimeStep]]<br>

[[$OutputStep]]<br>

[[$StopCriteria]]<br>


=== Space setting ===
[[$SpaceRegion]]<br>

[[$CellNumber]]<br>

[[$Deltaxyz]]<br>

[[$BCsetting]]<br>

[[$PMLlayer]]<br>


=== Source setting ===
[[$SourceType]]<br>

[[$SourceAmp]]<br>

[[$SourcePosition]]<br>

[[$SourceFrequency]]<br>


=== Material setting ===
[[$NumberofObject]]<br>

[[$MaterialStructure]]<br>

[[$MaterialParameter]]<br>


=== Near-to-Far-Field setting ===
[[$NTFFposition]]<br>

[[$NTFFparameter]]<br>


=== Generation setting ===
[[$DFTallField]]<br>

[[$CalGeneration]]<br>


=== Gmsh setting ===
[[$UseGmsh]]<br>

[[$GmshTag]]<br>

For more information about Gmsh, see [http://gmsh.info/doc/texinfo/gmsh.html#MSH-file-format-version-2-_0028Legacy_0029 <i> Gmsh website</i>]. <br><br>

== Input file 2: commands and parameters ==
'''Note:''' You can run the FDTD program '''WITHOUT''' the input file 2. However, if using this, you should really know the meaning of each function and parameter; otherwise, the program may not execute correctly as you change any default parameter.


[[$SaveType]]

[[$CourantFactor]]

[[$Backgroundparameter]]

[[$CPML_m]]

[[$CPML_max_kapa]]

[[$CPML_ma]]

[[$CPML_max_a]]

[[$CPML_ratio_maxsigma]]

[[$IncCPMLpar]]

[[$Output1Dincident]]<br>


== The format of output files ==
These pages present text format. <br>
''XX'' means it could be ''Ex'', ''Ey'', ''Ez'', ''Hx'', ''Hy'', or ''Hz''. <br>
And ''n'' represents the time step. <br>
''ii'' is ii-th file. <br>

=== Setting results ===
[[*.gn]]

[[*.ind]]

[[*.XX.ps]]

[[*.fld.par]]

[[*.pml.par]]

[[*.typ.par]]

[[*.so.time]]

[[*.so.freq]]

[[*.ntff.par]]

[[*.dft.par]]

=== Results at certain time step (n)===

[[*.step-n.XX.dat]]

[[*.step-n.inc.dat]]

[[*.step-n.XX.dft]]

[[*.refl]]

=== Results after time-stepping ===

[[*.rcs]]

[[*.gen]]

[[*.f-ii.ggen]]

== The meaning of the parameters in source codes ==