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Help with simulating condensation from a partially filled closed glass vial in a cold fridge
Posted 3 lug 2015, 11:20 GMT-4 Fluid & Heat, Heat Transfer & Phase Change, Modeling Tools & Definitions, Parameters, Variables, & Functions, Results & Visualization, Studies & Solvers Version 5.1 1 Reply
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I am having trouble with a condensation simulation. A closed glass vial at ambient temp is partially filled with 10 degC water. When it is put in a cold room with temp of 5degC, condensation occurs. I am trying to simulate the temperature change of the liquid and glass vial over time and see when condensation occurs.
I tried to do the comsol after the vacuum flask and condensation in electronic device examples but my results are no good.
Does someone have any advice? Do I have to assume convection in the liquid? Can I figure out condensation vs. time by just using the "moist air" categorization or do I have to do a phase change?
I attempted attaching my files, but it wouldn't work.
Tamara
Hello Tamara Dib
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Hi!
I am having trouble with a condensation simulation. A closed glass vial at ambient temp is partially filled with 10 degC water. When it is put in a cold room with temp of 5degC, condensation occurs. I am trying to simulate the temperature change of the liquid and glass vial over time and see when condensation occurs.
I tried to do the comsol after the vacuum flask and condensation in electronic device examples but my results are no good.
Does someone have any advice? Do I have to assume convection in the liquid? Can I figure out condensation vs. time by just using the "moist air" categorization or do I have to do a phase change?
I attempted attaching my files, but it wouldn't work.
Tamara
Hey Tamara, am working on something similar and having issues also. I had good success modeling without condensation as the fluid as a solid (just conductive heat transfer in the water) and convection on outside of flask/cup. But once getting to the condensation stage am struggling with the different physics boundary conditions. Am starting with a moist surface for the glass and wet surface for top of flask/cup but moisture transfer numbers are not reasonable. Want to make a moist air condition around the flask but quickly run out of memory when making a block of 1m^3 around cup.
Any progress?
-Joseph