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# compressible
  • q
    What does it say inside?
  • k
  • r
    Signal 9 is often an out of memory error
  • k
    i only use np 4 , my laptop is 16
  • k
    i didn't figure it out yet, i think my file is wrong at somewhere
  • q
    Have you run these files on a tutorial of dsmc? Do these settings work there?
  • r
    If the mesh is quite large it will run out of memory
  • r
    It's telling you that the process was terminated with a signal 9 error. That usually means out of memory
  • r
    Not that your setup is necessarily wrong
  • k
    this case is from my teacher, his file is not dsmcFoam but iam changing his file into dsmcFoam form to stimulate airfoil with high Ma and Kn
  • k
    to compare result between NS and DSMC method
  • q
    Rand paul has an interesting point. Try a smaller mesh, monitor RAM use when the command runs, for both mesh sizes, Also see if you can run dsmcFoam on a tutorial case. With its default files, and then with your own files.
  • k
    can i scale it smaller ?
  • r
    I mean a mesh with less cells, not smaller as in physical size of the domain
  • k
    oh thanks, i will try it
  • k
    i have a problem, after running i checked the paraview but there is no result, it just have model, there is no p,T, U result. Have anyone have that problem ?
  • x
    did you check the p, T, U files in the time step directories? Do they have non-zero data?
  • k
    You mean in the constant file?
  • x
    after you run the sim it will generate a file dir for each time step you set in the controlDict
  • k
    can you chek my inbox
  • u
    hello everyone, is there a guide or tutorial on how to set up a simulation of thermal convection in the atmosphere?
  • u
    in openfoam of course
  • u
    I've set up a simulation using foamRun/fluid but it seems like it's completely ignoring gravity.
  • m
    Not sure with the new solver structure but for some it used to be that they checked if there was a gravitiy entry in the right dictionary and then this term was activated. Id search the tutorial files for dictoranies with an entry called g
  • u
    is there any doc at all on the new solver structure?
  • u
    all I could find was a page on "solver modules" https://doc.cfd.direct/openfoam/user-guide-v12/solvers-modules
  • u
    but for 
    fluid
    there's almost no info
  • t
    I suppose reading the source code is the best way forward..
  • q
    I remember someone came along at some point and identified the huge unexploited market of tutorials for the new foundation forks..
  • t