[mactech001]

Dear all,

I've been designing a cooling jacket for an electrical machine, and i'm now comparing experimental and simulation results from a fluid analysis point of view.

At the same inlet flowrate and the same outlet static pressure with respect to 1atm, the pressure difference between inlet and outlet from simulation is 30% higher than the experimental measurement [(simulation delta_p - experiment delta_p)/experiment delta_p]. No roughness was applied to simulation.

could the fluid properties such as viscosity, density account for this difference?

Any experience/comments shared will be very helpful. Thank you for your kind attention.