Mixed flows in storm water systems (SWSs) generate a set of complex phenomena that are
difficult to capture in modeling. Shock-fitting and shock-capturing techniques are the two …

The two-component pressure approach (TPA) is an alternative to the Preissman slot method
(PSM) for modeling highly transient sewer flow, including transitions between free-surface …

This paper investigates the source of the spurious numerical oscillations often observed in
simulations using the well-known Preissmann slot method and proposes a nonoscillatory …

A new formulation of the Preissmann Slot for modeling surcharged (pressurized) one-
dimensional (1D) pipe flow is presented. The Dynamic Preissmann Slot (DPS) is derived in …

Transition between free-surface and pressurized flows is a crucial phenomenon in many
hydraulic systems. During simulation of such phenomenon, severe numerical oscillations …

This paper presents an extension of the Preissmann slot concept for the modeling of highly
transient two-dimensional (2D) mixed flows. The classic conservative formulation of the 2D …

One of the most used 1D tools to model collection systems is the Storm Water Management
Model (SWMM). Solving the full form of the Saint Venant equations, this model represents …

Geysers in dropshafts of stormsewer systems are consecutive eruptions of a mixture of gas
and liquid that can attain heights of more than 30 m. The present study investigates the …

The Preissmann slot model is one of the most widely used models to conceptualize both free-
surface and pressurized flows in urban drainage systems. Despite its simplicity and wide …

In recent years, China has been building several inter-basin water conveyance projects
across mountains and deep valleys, leading to the extensive use of long tunnels and …