Flow simulation....model done to scale.

I have a model of a pipe that measures 15km in length. For SolidWorks restrictions the model is done to scale (1/100) and of this I have to develop an analysis with FlowSimulation to determine pressure drops, velocities, etc. Someone can help me to know where I can get equivalent formulas that allow me to define the boundary conditions for this model to scale. Thanks.

SolidworksFlow Simulation