Using Pipe Curve Models

Last post we demonstrated a parabolic model for the pressure-flow relationship in a pipe, and showed a more robust way to represent the flow-pressure relationship.  In this post, we’ll discuss the application of both models.

Inverting the Pipe Curve

Fluid flow in a pipe, described by the pressure drop as a function of flow rate, is commonly modeled with a parabola: ΔP=a*Q² + b*Q + c.  However, it is sometimes very useful to have the inverse relationship: Q(ΔP).  In this post we’ll talk about a convenient and accurate way to model that inverse.