Request for Assistance in Making Script Iterative in CFX-post

- June 27, 2023 at 5:03 pm
  
  Dr Fatima Razavi, PhD in MEC ENG
  Subscriber
  
  Dear Community Members,
  
  I hope this message finds you in good health and high spirits.
  
  I have attached a script file, which functions appropriately as a *.cse file when executed through "play a session" in CFX-post. However, I require assistance in making it iterative so that it can load 120 timesteps and export each timestep as a separate CSV file. Despite my attempts to achieve this by installing Padre and familiarizing myself with Perl scripting, I have been unable to find a satisfactory solution.
  
  Therefore, I kindly request your support in making this script iterative. The attached file functions correctly, but as soon as I introduce a loop, it fails to execute properly.
  
  In light of these challenges, I believe attending a workshop on scripting/automation in CFD would greatly benefit me. While I am proficient in Unix Bash Scripting, I recognize the need to expand my knowledge in this area.
  
  Thank you for your attention to this matter. I sincerely appreciate your assistance.
  
  Warm regards,
  Fatemeh.
  
  ---------------------------------------------------------------------------------
  ---------------------------------------------------------------------------------
  # Session file started: 2023/06/20 11:37:39
  # CFX-21.2
  
  # To avoid unnecessary file pre-processing and modifications, include
  # COMMAND FILE at the top of your session file.
  # If it is not included, the file is assumed to be older and will be
  # modified for backward compatibility.
  COMMAND FILE:
  CFX Post Version = 21.2
  END
  
  PLANE:Plane 1
  Apply Instancing Transform = On
  Apply Texture = Off
  Blend Texture = On
  Bound Radius = 0.5 [m]
  Colour = 0.75, 0.75, 0.75
  Colour Map = Default Colour Map
  Colour Mode = Variable
  Colour Scale = Logarithmic
  Colour Variable = Ragweed.Averaged Volume Fraction
  Colour Variable Boundary Values = Conservative
  Culling Mode = No Culling
  Direction 1 Bound = 1.0 [m]
  Direction 1 Orientation = 0 [degree]
  Direction 1 Points = 10
  Direction 2 Bound = 1.0 [m]
  Direction 2 Points = 10
  Domain List = /DOMAIN GROUP:All Domains
  Draw Contours = Off
  Draw Faces = On
  Draw Lines = Off
  Instancing Transform = /DEFAULT INSTANCE TRANSFORM:Default Transform
  Invert Plane Bound = Off
  Lighting = On
  Line Colour = 0, 0, 0
  Line Colour Mode = Default
  Line Width = 1
  Max = 0.0
  Min = 0.0
  Normal = 1 , 0 , 0
  Number of Contours = 11
  Option = XY Plane
  Plane Bound = None
  Plane Type = Slice
  Point = 0 [m], 0 [m], 0 [m]
  Point 1 = 0 [m], 0 [m], 0 [m]
  Point 2 = 1 [m], 0 [m], 0 [m]
  Point 3 = 0 [m], 1 [m], 0 [m]
  Range = Global
  Render Edge Angle = 0 [degree]
  Specular Lighting = On
  Surface Drawing = Smooth Shading
  Texture Angle = 0
  Texture Direction = 0 , 1 , 0
  Texture File =
  Texture Material = Metal
  Texture Position = 0 , 0
  Texture Scale = 1
  Texture Type = Predefined
  Tile Texture = Off
  Transform Texture = Off
  Transparency = 0.0
  X = 0.0 [m]
  Y = 0.0 [m]
  Z = 1.6 [m]
  OBJECT VIEW TRANSFORM:
  Apply Reflection = Off
  Apply Rotation = Off
  Apply Scale = Off
  Apply Translation = Off
  Principal Axis = Z
  Reflection Plane Option = XY Plane
  Rotation Angle = 0.0 [degree]
  Rotation Axis From = 0 [m], 0 [m], 0 [m]
  Rotation Axis To = 0 [m], 0 [m], 0 [m]
  Rotation Axis Type = Principal Axis
  Scale Vector = 1 , 1 , 1
  Translation Vector = 0 [m], 0 [m], 0 [m]
  X = 0.0 [m]
  Y = 0.0 [m]
  Z = 0.0 [m]
  END
  END
  
  # Sending visibility action from ViewUtilities
  >show /PLANE:Plane 1, view=/VIEW:View 1
  
  ##################
  > load timestep=35388
  
  EXPORT:
  ANSYS Export Data = Element Heat Flux
  ANSYS File Format = ANSYS
  ANSYS Reference Temperature = 0.0 [K]
  ANSYS Specify Reference Temperature = Off
  ANSYS Supplemental HTC = 0.0 [W m^-2 K^-1]
  Additional Variable List =
  BC Profile Type = Inlet Velocity
  CSV Type = CSV
  Case Name = Case 2nd3min7ms
  Export Connectivity = Off
  Export Coord Frame = Global
  Export File = E:/Fatemeh (Live Runs)/BEST CFD Runs/2023-06-05-Transient-\
  8Diff-4PartInj-FansSQ-0TO180-7ms/2023-06-05-ExhaustsOnWall-8SwirrlDiffON-\
  4Aerosolizers-FansFwBw7msSynchronized-FansSQ_003/CSV Files/348.csv
  Export Geometry = On
  Export Location Aliases =
  Export Node Numbers = Off
  Export Null Data = On
  Export Type = Generic
  Export Units System = Current
  Export Variable Type = Current
  External Export Data = None
  Include File Information = Off
  Include Header = On
  Location = CeilingWall
  Location List = /PLANE:Plane 1
  Null Token = null
  Overwrite = On
  Precision = 8
  Separator = ", "
  Spatial Variables = X,Y,Z
  Variable List = Ragweed.Averaged Volume Fraction
  Vector Brackets = ()
  Vector Display = Scalar
  END
  >export
- June 29, 2023 at 9:29 am
  
  Rob
  Forum Moderator
  
  We can't cover scripting in much detail, but...
  Check the CFD Post documentation or CFX Reference manual section on power syntax. You can embed perl statements in a .cse file. Any line starting with an ! is interpreted as a perl statement. Italics as a colleague told me - I don't use CFX.
  What we have done before is to create a couple of dummy models. Create a report (in CFD Post) for the first model, then read the new case (same geometry but different file name) into CFD Post & update the report. The state file should give you the command syntax, repeat & then modify to suit the real model. For 120 models you may want to borrow a student or write a Python/AWK script to generate the full journal but that depends on how complex the Perl bit is.