Filling and emptying processes are common maneuvers while operating, controlling and
managing water pipeline systems. Currently, these operations are executed following …

Emptying pipelines can be critical in many water distribution networks because
subatmospheric pressure troughs could cause considerable damage to the system due to …

The risks associated with unsteady two-phase flows in pressurized pipe systems must be
considered both in system design and operation. To this end, this paper summarizes …

The emptying procedure is a common operation that engineers have to face in pipelines.
This generates subatmospheric pressure caused by the expansion of air pockets, which can …

The rapid filling process in pressurized pipelines has been extensively studied using
mathematical models. On the other hand, the application of computational fluid dynamics …

The sizing of air valves during the air expulsion phase in rapid filling processes is crucial for
design purposes. Mathematical models have been developed to simulate the behaviour of …

A filling operation generates continuous changes over the shape of an air–water interface,
which can be captured using a 3D CFD model. This research analyses the influence of …

Air vessels can effectively prevent water hammer caused by pump failure; however, the
thermodynamic behaviour and accurate model of air in air vessels are rarely discussed, and …

Air valves operate as protection devices in pipelines during drainage processes in order to
mitigate vacuum pressures and control the transient flows. Currently, different authors have …

The filling process in water pipelines produces pressure surges caused by the compression
of air pockets. In this sense, air valves should be appropriately designed to expel sufficient …