Create simplify heat exchanger by this drawing
In SW you get model. Turn on “Flow Simulation” module
Create new flow project
On “type of task” page turn on “heat conduction in solids”
On page “fluid” and add “water”
On page “material” add material aluminum. All other parameters are default
Create plugs in holes of detail
Create boundary conditions on detail holes.
Create a parameter of the mass flow 5kg/s at the entrance to casing. Temperature is 573K
At the out of casing, create a boundary condition "ambient pressure"
At the entrance to tube create a boundary condition "incoming speed" 1m/s and temperature is 278K
At the outlet of the pipe, set the boundary condition "coming out speed" 1m/s
start the calculation
After calculations add results "trajectory of the flow" – flow temperature, type – tubes, faces of the inner pipe (incoming, exiting), number of points - 100
add results "trajectory of the flow" – flow temperature, type – tubes, faces of the inner pipe (incoming, exiting), number of points – 20
You get result!!
Temperature rises by approximately to 30 degrees.
I do not know the parameters of your heat exchanger, so the results are approximate. This is just an example, based on it, you can make similar calculations.