"ITRI-NTU 3D-FDTD" 修訂間的差異

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(未顯示同一使用者於中間所作的 64 次修訂)
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3D-FDTD is named 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''.
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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''.
   
   
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== Input file 1: parameters assigned command ==
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== 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]].
 
<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]].
   
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=== Files setting ===
 
[[$SParameterDirectory]]<br>
  
[[$SParameterDirectory]]<br>
   
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[[$OutputDirectory]]<br>
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[[$OutputName]]<br>
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[[$OutputMaxReflection]]<br>
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=== Unit setting ===
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[[$UnitConvert]]<br>
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=== Time setting ===
 
[[$TimeStep]]<br>
  
[[$TimeStep]]<br>
   
 
[[$OutputStep]]<br>
  
[[$OutputStep]]<br>
   
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[[$StopCriteria]]<br>
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=== Space setting ===
 
[[$SpaceRegion]]<br>
  
[[$SpaceRegion]]<br>
   
 
[[$CellNumber]]<br>
  
[[$CellNumber]]<br>
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[[$Deltaxyz]]<br>
   
 
[[$BCsetting]]<br>
  
[[$BCsetting]]<br>
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[[$PMLlayer]]<br>
  
[[$PMLlayer]]<br>
   
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=== Source setting ===
 
[[$SourceType]]<br>
  
[[$SourceType]]<br>
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[[$SourceAmp]]<br>
   
 
[[$SourcePosition]]<br>
  
[[$SourcePosition]]<br>
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[[$SourceFrequency]]<br>
  
[[$SourceFrequency]]<br>
   
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=== Material setting ===
 
[[$NumberofObject]]<br>
  
[[$NumberofObject]]<br>
   
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[[$MaterialParameter]]<br>
  
[[$MaterialParameter]]<br>
   
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== Input file 2: parameters assigned command ==
  
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'''Note:''' Without the input file 2, you can still run the FDTD program. However, if using this, you have to really realize the meaning of each function and parameter; otherwise, you should not change the default parameters in each function.
  
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=== Near-to-Far-Field setting ===
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[[$NTFFposition]]<br>
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[[$NTFFparameter]]<br>
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=== Generation setting ===
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[[$DFTallField]]<br>
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[[$CalGeneration]]<br>
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=== Gmsh setting ===
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[[$UseGmsh]]<br>
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[[$GmshTag]]<br>
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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><br>
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  ⚫
== Input file 2: commands and parameters ==
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'''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.
   
   
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[[$CPML_ratio_maxsigma]]
  
[[$CPML_ratio_maxsigma]]
   
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== The format of output setting files ==
  
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[[$IncCPMLpar]]
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[[$Output1Dincident]]<br>
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== The format of output files ==
  
== The format of output files ==
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These pages present text format. <br>
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''XX'' means it could be ''Ex'', ''Ey'', ''Ez'', ''Hx'', ''Hy'', or ''Hz''. <br>
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And ''n'' represents the time step. <br>
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''ii'' is ii-th file. <br>
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=== Setting results ===
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[[*.gn]]
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[[*.ind]]
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[[*.XX.ps]]
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[[*.fld.par]]
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[[*.pml.par]]
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[[*.typ.par]]
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[[*.so.time]]
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[[*.so.freq]]
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[[*.ntff.par]]
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[[*.dft.par]]
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=== Results at certain time step (n)===
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[[*.step-n.XX.dat]]
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[[*.step-n.inc.dat]]
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[[*.step-n.XX.dft]]
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[[*.refl]]
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=== Results after time-stepping ===
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[[*.rcs]]
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[[*.gen]]
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[[*.f-ii.ggen]]
   
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== The meaning of the parameters in the source code ==
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== The meaning of the parameters in source codes ==

於 2021年1月28日 (四) 15:33 的最新修訂

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

Be careful: Although most sequences of functions are not important, the function $NumberofObject MUST appear before the function $MaterialStructure and $MaterialParameter.

Files setting

$SParameterDirectory

$OutputDirectory

$OutputName

$OutputMaxReflection


Unit setting

$UnitConvert


Time setting

$TimeStep

$OutputStep

$StopCriteria


Space setting

$SpaceRegion

$CellNumber

$Deltaxyz

$BCsetting

$PMLlayer


Source setting

$SourceType

$SourceAmp

$SourcePosition

$SourceFrequency


Material setting

$NumberofObject

$MaterialStructure

$MaterialParameter


Near-to-Far-Field setting

$NTFFposition

$NTFFparameter


Generation setting

$DFTallField

$CalGeneration


Gmsh setting

$UseGmsh

$GmshTag

For more information about Gmsh, see Gmsh website.


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


The format of output files

These pages present text format.
XX means it could be Ex, Ey, Ez, Hx, Hy, or Hz.
And n represents the time step.
ii is ii-th file.

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

取自 "http://yrwu-wk.ee.ntu.edu.tw/mediawiki/index.php?title=ITRI-NTU_3D-FDTD&oldid=2375"