[Ho_Sh]

Hello,

I am simulating a heat exchanger based on the TPMS core. I created the geometry on nTopology platform and transferred it to CFX for simulation. But CFX cannot distinguish between the interfaces, so I had to delete the solid which left a gap between hot and cold fluid. When I run the simulation in this way, no heat transfer occurs, although it converges.

I use the mass flow rate and temperature of inlets to find the outlet temperatures and pressures.

Any idea if there is any way to overcome the issue?

Many thanks
Hossein