A Homogeneous Flow Model for nitrogen cooling in the aluminum-alloy extrusion process

•Focus on the two-phase nitrogen flow within cooling channels of an extrusion line.•Homogeneous-flow approach applied in a multiphysics environment.•Integration of 1D model for nitrogen cooling into complex 3D extrusion model.•Experimental temperature dataset acquired over an industrial extrusion line.•Remarkable predictive capability by a computationally inexpensive approach.