boiler block 3

About this project

Does it flow? Made changes to model. Removed pins at the turn and put fins, removed some pins at the inlet and made also made inlet corners less round. This sim was set up with Pressure inlet + Pressure outlet. I was told that this 'boundary condition combination is very poor in terms of stability'. I don't think the data is any good? It is a fluid heat transfer block/water boiler block. The block goes onto heat source, water gets pumped into it, and aim is to heat up the water. To increase the surface area there are lots of fins inside, and fluid needs to turn 180, so the fins at the turn are in a radial pattern. I wanted to simulate the water flow to see what it might do, and see if there are any massive dead spots.