[dukitz]

Hi everybody,

I have run a transient simulation of the flow in a compressor in CFX and I would like to create an animation. I have tried to create in CFD post via keyframe animations, but it takes ages. The thing is I need to create an animation of 500 frames and the program loads every timestep in the screen.

I have read in a forum that someone got a way to do it via scrypts, but it is an old thread and seems that nobody answers. I would try to do it myself, but the problem is that I don't know anything about it and I don't have time to experiment (thesis deadline next week).

I would really appreciate if someone could help me with that.

Regards

Juanpa

[mvoss]

hello,

one possible approach:

COMMAND FILE:
  CFX Post Version = 12.0
END
!	@RESFILES=("YOUR_RESFILE.res");
!	foreach $res (@RESFILES) {
>load filename=E:/FULLPATH/$res
!	print "+----------------------------------------------------------------------------------------+\n";
!	print "|Loaded $res 										|\n";
>readstate filename=E:/FULLPATH/Ani.cst, mode = overwrite, load = true, keepexpressions = false
!	print "|Loaded state for $res 							|\n";
!	print "creating MPEG-Video from $res;/n";
> animate load, filename = E:/FULLPATH/Cam1.can
! 	print"|Animation loaded for $res 								|\n";
! 	print"|Starting to process MPEG-Video for $res 							|\n";
!	print "+----------------------------------------------------------------------------------------+\n";
>animate play=forward
! }

1. save your desired state as "Ani.cst" and
2. the animation setup as "Cam1.can"
3. adjust YOUR_RESFILE and FULLPATH
Save the above code as *.cse file and start via the ComanndLine from CFX-Launcher in the correct directory by doing a "cfd5post -batch YourScriptname.cst".

If it´s not running report back the error but in 9 of 10 times it is due to the paths and names to be typed correctly.


Matthias

Little Hint: when doing a wb-project just copy the script to the user-files section and set the paths according to this, so you can have multiple results when giving the FULL path in the @RESFILES and use it for other stuff such as grabbing data from trn-files

[mvoss]

me again,

found an even better one...this one grabbs data from the results and adjusts the total length of the animation in case of different total simulation times + you can adjust the animations settings in the script.
Adjust the paths and res-file-names and you are good to go.

! my $RESFOLDER =('V:\voss\3D_Mesh_Movement_CUBES\02_CFX_SETUP');
! my $STATEFOLDER = ('V:\voss\3D_Mesh_Movement_CUBES\03_CFX_POST');
! my $STATE = ('3D_Mesh_Movement_CUBES.cst');
! my $MOVIEFOLDER = ('V:\voss\3D_Mesh_Movement_CUBES\03_CFX_POST');


! my @RESFILES= ('3D-Mesh_Movement-CUBES_CnearBC5_001','3D-Mesh_Movement-CUBES_CnearBC3_001');

! foreach my $FILE(@RESFILES){

COMMAND FILE:
  CFX Post Version = 14.0
END

DATA READER:
  
  Clear All Objects = false
  Append Results = false
  Edit Case Names = false
  Open to Compare = false
  Multi Configuration File Load Option = Single Case
  Open in New View = true
  Keep Camera Position = true
  Load Particle Tracks = true
  Files to Compare =
END

DATA READER:
  Domains to Load=
END
> load filename=$RESFOLDER\$FILE.res, \
force_reload=true
! print "\n";
! print "----------------------------------------\n";
! print "LOADED results for $FILE \n";
>readstate filename=$STATEFOLDER\$STATE, mode = append, load = false, keepexpressions = true

! 	$timestepList = getValue("DATA READER","Timestep List");
!	@timestepList = split(/,/,$timestepList);
!	$lastFrame=$timestepList[$#timestepList];
!	print "found $lastFrame timesteps for $FILE \n";

!   $frameDiff = $lastFrame-2; # for creating the animation 

> load timestep=0

ANIMATION:ANIMATION
  Animate Camera = On
  Animation Hardcopy Filename = $MOVIEFOLDER\$FILE"_script".avi
  Save Hardcopy = Off
  Looping = Loop
  Looping Cycles = 1
  Video Format = wmv
  
END

ANIMATION:ANIMATION
  Animate Camera = On
Animation Hardcopy Filename = $MOVIEFOLDER\$FILE"_script".avi
  Save Hardcopy = On
  Looping = Loop
  Looping Cycles = 1
  Video Format = wmv
  
END
> animate new =

KEYFRAME:KeyframeNo1
  Number Of Frames = $frameDiff
END

> animate new = KeyframeNo1

> animate goto = $lastFrame

KEYFRAME:KeyframeNo2
  Number Of Frames = 1
END

> animate goto = 1

> animate modify = KeyframeNo1

> animate goto = $lastFrame


> load timestep=$lastFrame

> animate modify = KeyframeNo2

> animate goto = 1

ANIMATION:
  Animation Bit Rate = 5152000
  Animation Frame Rate = 24
  Animation Quality = Highest
  Animation Speed Factor = 2
  Antialiasing = On
  Drop Last MPEG Frame = Off
  Hardcopy Tolerance = 0.0001
  Intermediate File Format = jpg
  Keep Intermediate Files = Off
  MPEG Height = 1080 
  MPEG Scale = 100
  MPEG Size = Custom
  MPEG Width = 1920 
  Output Directory = .
  Output to User Directory = Off
  QAnim Override Symbol = On
  QAnim Symbol Size = 1.0
  QAnim Symbol Spacing = 0.6
  QAnim Symbol Type = Ball
  Screen Capture = Off
  Speed Adjustment Selection = Normal
  Speed Scaling Method = Distribute Frames Smoothly
  Timestep Interpolation Method = Timestep
  Variable Bit Rate = On
  White Background = Off
END
! print "STARTING MPEG for $FILE \n";
 > animate play=forward
! print "DONE MPEG for $FILE  \n";
! print "----------------------------------------\n";
! print "\n";
> close
!};

not quiet sure about the "Output Directory = ." line but since we set the HARDCOPY FILENAME it should work.

Matthias