[auk]

I carried out a steady axial fan simulation with a relatively low volume flow rate, My efficiency monitor is fluctuating, which is something i cant wrap my head around as this is a steady simulation.(This might be a silly question , i dont know)
Any help would be highly appreciated.

massflow.4_Copy_steady_Eta Monitor Plot.png
Star1102UnstructuredMesh_Mesh.png

[lcarasik]

Originally Posted by auk

I carried out a steady axial fan simulation with a relatively low volume flow rate, My efficiency monitor is fluctuating, which is something i cant wrap my head around as this is a steady simulation.(This might be a silly question , i dont know)
Any help would be highly appreciated.

Attachment 54983
Attachment 54984

You may not be converging to an answer or have converged yet.

[fluid23]

You may have setup a steady simulation, but the flow itself may not be steady. If you are using an implicit solver, your steady solution is still using a pseudo time step to try and find a steady solution. Certainly, 600 iterations is not enough for a problem like this. Let it run and if you don't see your monitor level off eventually, consider switching to an unsteady analysis.