Introduction to transient modeling techniques
Just a heads-up—this section is still a work in progress! I’ll be revising and expanding it soon to make sure it’s as useful as possible. Curious about what’s already done or currently in the works? Check the changelog for updates.
Simulating the complex, rapidly changing, and wave-like behavior of transient events in a pipeline network requires specialized numerical methods that go far beyond the capabilities of standard steady-state or even extended period simulation (EPS) solvers. This section will provide you with an overview of these advanced techniques, focusing primarily on the Method of Characteristics (MOC).
The MOC is the workhorse algorithm used in most commercially available and open-source transient analysis software packages, and for good reason: it's well-suited to solving the hyperbolic partial differential equations that govern unsteady, compressible flow in pipelines.
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