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Old   May 8, 2023, 06:45
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Hi, new to SU2...
I'm interested in using SU2 to simulate an air and water system with heat transfer. Similar to the Fluidyne Engine shown here:

Is this at all possible using SU2 withour extending the software?

Kind regards,
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Old   May 9, 2023, 08:08
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So the air column is right on top of the water column and the water is in liquid form? So the end result is that the air-water interface will stay where it is and water and air will not mix?

The fluid-fluid interface in a multizone approach will be diffusive, so in the long term, the air and the water will become strongly mixed. We do not have an interface tracking method like VOF or a way to limit diffusion over a gas-liquid interface.

You could maybe set this up in a multizone/CHT setup. You separate the 2 fluids using a thin solid wall with a high conductivity. In that way, there will not be any diffusion of species across the interface, only conduction of heat.

Here is a multizone example of 2 different species:
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Old   May 9, 2023, 08:13
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Yes, no mixing is required to be simulated. I'll check that thanks...

Last edited by Theuns; May 9, 2023 at 08:13. Reason: Added more detail
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dynamic fluid design, thermal conduction, water + air

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