how to make increasing in pressure by heating vessel with water
That would need to be a non-linear study with the pressure value set to be based on a curve that corresponds to the temperature/pressure relationship over time. The other option is to heat water in Flow Simulation and then export the pressures into structural simulation. However you would have to pick the time you want to export or record those pressures and use them as your non-linear curve.
what do you want to simulate exactly?
do you want to find out how much pressure is created from the heating? ie heating of the air and how the pressure increases?
or are you trying to find the deformation based on changing pressure from the heating?
could get really complicated really quickly depending on how you define your goals
i want to find out how much pressure is increased from solar heating in closed system, so the B.C is real wall and the flow is internal with water and solar model
i don't understand what you're using a real wall for but otherwise seems reasonable
what problem are you running into with running the simulation?
i have concentric pipe the outer pipe is glass(work as Pyrex) and the internal pipe is steel (work as solar absorber), the internal pipe fills with solution and the part of solution leaves as vapor when the pressure and temperature reach into saturated, so how i can increase the pressure when the system subjects to solar isolation.(the two lid for internal pipe real wall so the system will work as close system)
what you describe can be setup in flow simulation. are you running into an issue with setting it up? i'm really not sure what your question is
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