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  1. Yesterday
  2. Andreas Arapakopoulos
    Hi Yukai, The force in the last line is the converged value from the solver. I would suggest to use a python code only for post-processing. For example, if you want to plot the convergence history of the forces over OpenFOAM iterations. By parsing various values, such as force in x-axis to parameters and establishing a robust integration CAESES with OpenFOAM, then you can continue with a Design of Experiments and/ or with a Optimization process. Best Regards, Andreas
  3. Mr. Heinrich von Zadow started following How to conect Caeses and Sesam?
  4. Mr. Heinrich von Zadow
    Hi Susan, I don't have any experience with Sesam, but I'll assume it depends on (any number of) input files and input geometry and after running the tool in batch mode there will be (again, any number of) results files. If that is the case, the connection through the Software Connector should be basically the same, as any other. I recommend you start by looking at the respective Tutorials (e.g. Jumper, StarCCM+). Cheers, Heinrich
  5. Susan
    Hi, anyone, I want to connect Caeses with Sesam but I just see a pdf about this two softwares.I don't know how to do. Anyone know how to do or whether this can come ture? Yours Susan.
  6. Last week
  7. Carlos Almeida
    Hello Carl, Is there any documentation regarding the installation of the SSH Resource Manager Server? Best regards, Carlos
  8. Yukai
    Hi Andreas Arapakopoulos Thank you very much for replying to me I currently use python to calculate the force in the X-axis direction in the forces.dat file, and output a calculated dat file. I also write it to Allrun for execution. Can this calculated dat file be regarded as the best Is it a numerical value? Or would it be better for me to directly use the last value in the forces.dat file as the optimized value as you said?
  9. medicamententreparticulier medicamententreparticulier joined the community
  10. dh0 started following META-thread: Marine - Propellers
  11. dh0
    Hello, I dont know if anyone still checks this but i have a model i made in fusion and was wondering how to add it into caeses
  12. dh0 dh0 joined the community
  13. Andreas Arapakopoulos
    Hi Yukai, OpenFOAM is notably complex when it comes to managing numerous processed files. To address this complexity, I've included a screenshot featuring a standard connection input file, geometries, output files, and corresponding values. It's advisable to consistently employ relative paths by utilizing the subfolder option, as illustrated in the second screenshot. To extract parameters from the force.dat file, you can directly navigate to the last line, which typically represents the converged value from OpenFOAM. This can be achieved using the -1 option in the command line. Moreover, consider incorporating a Python file for post-processing and integrating it into your connection. This can be facilitated by incorporating the Python script as a command line within the Allrun.sh executable file. Best Regards, Andreas
  14. Yukai started following openfoam optimization parameter settings questions
  15. Yukai
    Hello I have some questions !! I have completed the openfoam connection and executed it successfully, but I would like to ask how I want to set the optimization parameter file. In the example, there is a pin.dat file that can be set as a parameter, and after my current openfoam value calculation is completed, it will Generate force .dat file, how do I set it to the optimization parameters? I am currently writing a python program that allows it to calculate the force.dat file into a total resistance parameter and write it into a blank dat file so that this parameter can be used as an optimized setting, but I am not sure about my approach. Can the effect be achieved? In addition, I would like to ask how the force.dat file cannot be written by caeses after the openfoam execution is completed, and the path generated by it is a bit wrong. How do I need to change it? As shown in the red circle in the picture The correct path should be /home/ncku514/Desktop/kcsopenfoam1030/1107KCSRHINO/manual_results/baseline/openfoam/postProcessing/force1/0/force.dat But he is missing /postProcessing/force1/0/ Thanks for your help!!! Best Regards YuKai
  16. Weber started following CAESES & StarCCM+ Connection Question
  17. Fabian Thies Fabian Thies joined the community
  18. Simon Hauschulz Simon Hauschulz joined the community
  19. Mr. Heinrich von Zadow started following CAESES & StarCCM+ Connection Question
  20. Mr. Heinrich von Zadow
    Hi CJ, sounds like CAESES is waiting for StarCCM+ to return the results files. You can either follow the output in the CAESES Task Monitor, or navigate to the current design directory (if you manually execute the connector this would be .../manual_results/baseline/Runner) and see what's happening in there. Basically, the directory should include everything you need to run the external computation. Just give it a try and make sure it is working (by manually calling the script or StarCCM+ with the corresponding macro inside that directory). Once you have confirmed the computation runs independent of CAESES, you can come back and trouble shoot the connection set-up in CAESES. Cheers, Heinrich
  21. CJ Coll started following CAESES & StarCCM+ Connection Question
  22. CJ Coll
    I have worked through the sduct tutorial for StarCCM connection and have made it to the 'runner' part. When I press the green play button, the bottom of the screen will turn orange and a message appears at the bottom saying ready, but nothing is happening. I do not know what I am doing wrong because I have correctly set the StarCCM file path. Do I first have to go into StarCCM and create a macro to open the file? Do I first need to export the trimesh as an STL? Am I using the right argument? I have been stuck on this for some time and cannot figure out why it is not running, or if it is running, how do I know it's running and not waiting hours to finish the simulation? Argument = " -batch macro_master.java -power -podkey MYCODE -new" Any comments are much appreciated
  23. Earlier
  24. Mr. Heinrich von Zadow started following Software Connections
  25. Mr. Heinrich von Zadow
    Hi Ail, there should be a generic integration of external tools into heeds that is based on running the external tool in batch mode via a script. CAESES wise things look good -- by changing the values in your fsc file you willl be able to create different geometry variants. You will probably need to define an export, though. How to actually trigger thigs from HEEDS' side is probaby a question their support can help you with. Btw: from the fsc file you attached, I take it that you still run a very old CAESES 4 installation -- I hihly recommend you to upgrade to the latest 5.x. Cheers, Heinrich
  26. Ail
    Hello I work in the field of parametricization and optimization of vessel hull form. I want to take the parameterized model in cases for HEEDS MDO software. HEEDS mdo software has an entry portal for Caeses software, which is a file in fsc format. takes input I output the parameterized file in fsc format from caeses, but it does not show the parameters in the heeds software. Do you suggest a method to connect two software? Ex3.fdb EX3_New.heeds EX3.fsc
  27. Ail started following Software Connections
  28. Ail Ail joined the community
  29. Mr. Heinrich von Zadow
    Hi Susan, If you use this method "smooth joint to stem" for the selected surface in your screen shot you will have to make sure the adjacent surface is defined such that it results in the same shape along the joint edge (possibly you will also want continuity accross the edge -- that would be another thing to keep in mind). What about you trim the upper surface and extend the lower one all the way to the max height? BTW: Which version of CAESES are you working with? Looks like a 4.x to me. I definitely recommend to update to the latest 5.2.4 -- there is years of development in between them. Cheers, Heinrich
  30. Susan
    Hi， Gustaf. Can you teach me the surface to the stem, I don know how to make the surface end at a arc. I will be appreciate it If you can help me !
  31. Susan
    Hi，Mr. Heinrich von Zadow，I find a sample and learned it ,now I built some surface of the bow, but there is a surface can not match with other surfaces. I wonder if you have advice. Thankfully！！！ I used the future below. And result is as follows.
  32. Mr. Heinrich von Zadow
    Hi Susan, I'd recommedn to start with these: (they are part of any CAESES installation)
  33. conalhughes
    Hi Susan
  34. conalhughes conalhughes joined the community
  35. Gustaf Magnander
    Hi Claus, Thank you for your reply! I already created a ticket concerning this this hull, however not about the issues connected to the the ruled surface, and have got help from Fabian Thies who looks at the ship in general terms, so I can ask him more about the ruled surface tomorrow if I'm not satisfied after playing with the parameterization. Kind regards, Gustaf
  36. Mr. Claus Abt started following how to manipulate a ruled surface?
  37. Mr. Claus Abt
    Hej Gustaf, Can you create a ticket in the helpdesk https://helpdesk.caeses.com/ and share your project file, please? Looks like the parametrization is different to what you would like to achieve. The ruled surface connects the curves at the same parameter values, hence you can manipulate them by changing the parametrization, e.g. unit speed or even custom. Cheers Claus
  38. Gustaf Magnander
    Hi, I'm modeling a ship hull and have generated a ruled surface between two generic curves (see the attached figures). However as you can see the surface doesn't look good slightly forward of LOA/2 and forward to the stem. The surface also bends inward, creating a curved surface and I'm wondering how I can fix these issues. I want the surface to be completely flat between the two generic curves and thought that a ruled surface should work, but I do not really know if a ruled surface is the best choice and if it can be controlled like I want to. If anyone can explain how I can control the surface and make it completely flat that would be great. Thanks, Best regards, Gustaf
  39. Susan
    Unfortunately, I don't have any materials and can only rely on the help documents in the software,and I do not find some material about full parametric modeling.
  40. Mr. Heinrich von Zadow
    There is plenty of material. Have you had a look into the documentation?
  41. Susan
    But, I don't know how to do it,and there are not tutorials about the futures and some operation.
  42. Susan
    Yes, I have tried to do a BRep morphing by FFD to the bow ,but it changed too little.So I try to rebuild the bow of the ship.
  43. Mr. Heinrich von Zadow
    That sounds like a good start. I'd start importing it and look into partially parametric modelling techniques. BRep morphing, Free Form Deformations, Delta Shifts all work well in different areas of hull design. If you have specific questions regarding particular shape variations, feel free to ask. A lot also depends on constraints and the objective of your optimization problem.
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