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  1. tundres

    May a 2-phase fluid be treated as incompressible?

    I suppose, my question looks a little bit simple but my idea was not from bernoulli itself. In a pipe, assuming one dimension flow, the difference between bernoulli and an energy balance is the heat and the change in the internal energy of the flow. So it looks like I cannot neglect the change...
  2. tundres

    May a 2-phase fluid be treated as incompressible?

    Hi David, thanks for the answer and the time you took to write it. I really appreciate that help. I'm aware, that 2-phase correlations are not really accurate, well I didn't know it was that inaccurate...but what I really what to know, if it's correct to apply the incompressible theory to that...
  3. tundres

    May a 2-phase fluid be treated as incompressible?

    Hi! Theory question...I have a fluid in a tube. The fluid is at the beginning water and at the end vapor because the tube gets heated. Suppose I know the head loss because of the friction...it is ok to apply the bernoulli principle, if we take into account, that the fluid have a low velocity...
  4. tundres

    Fortran subroutine - global variable

    Hi vumat, I finally found the way to accomplish that. In fact, it's possible to define global variables within a subroutine. I don't tried yet but I think you can exchange variables between subroutines with this "global variables" as well. The solution was to read a Fortran Manual, also, in my...
  5. tundres

    Fortran subroutine - global variable

    Hey, I am glad to read some ideas: To vumat721: your solution could work if I am able to get the temperature of a determined node. In this case, I would able to define the behaviour of the routine with the limiting value, in my case the temperature of the node (hard coded). To DanStro: I didn't...
  6. tundres

    Fortran subroutine - global variable

    Hi everybody, I have made a heat source to model laser welding with the dflux subroutine and I would like to know, if it's possible to define some global variables. What I am trying to accomplish is to adapt my heat source if for example any point of the model reach a defined temperature. Is...

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