[xianling]

Hello

I want to simplify my 3 domain model:
- water
- metal
- gas

to one domain.
- water

Domain is 3-D model tube and shell hex.

The situation scheme is as I shown below please click picture.

The simulation is heat transfer from gas to water across metal.
gas and metal, metal and water is connected by interface (non conformal mesh),

I have done full, heat transfer simulation with full 3 domain model, so i have some neccesery information, and results to simplify metal and gs domain. Now in second step i want to reduce time calculation because i want to make some geometry changes on domain water.

So that i transfer heat fluxes and temperatre profiles from interface water-metal. I reduce model to only water domain chunk and i set heat flux profile, to place where water connected with metal, wall->thermal->heat flux-> heat flux prof file.

interface respond a wall where i put heat flux profile.

and guess what.

I recieve some another results as I expected. I put the same place temperature profile and results is almost the same wrong.
So if the transfer is from gas to metal and from metal to water, then i think when i have some results and neccesry profiles i can simulate heat transfer from metal to water as profile, and as i correctly think heat flux will be enugh to simulate this?

But as i properly understand replace metal domain and gas domain to constant profile isnt mistake because interface is for transfer information from one domain to another.

So my question is how to properly cut model from gas and metal and correctly set to interface [water- metal], correctly heat transfer boundary?
heat flux, temperature? Water "see" this transfer as wall temperature profile, in place of conntact. Convection will be in water, so it is not neccesary simulate it i think when we have water domian.

any suggestion?