The initial time/WQ simulation status of pipes is entered/edited in the Pipe/CV table, which is accessed by selecting Simulation Data > Simulation Data in Model Tables > Initial Status (Pipe/CV).
The initial status for pipes is data associated with each pipe in the system. The above sub-menu option therefore gives access to the regular Pipe/CV table, where other system data, such as the diameters and steady state status (OPEN/CLOSED) of the pipes, can and should have been entered already.
When entering the Pipe/CV table (as described above), the table automatically scrolls to the “Tsim Initial Status” column. This column needs to be populated by the user, by specifying either OPEN or CLOSED for every pipe in the system. (Initially, by default, the Tsim Initial Status of every pipe will be the same as the steady state status (OPEN/CLOSED) settings).
A pipe’s status can be made to vary throughout a time simulation by the use of control statements.
(A status of CLOSED is not allowed for check valves).
(The initial status of a pipe is considered system-specific time/WQ simulation data, which is saved as part of the system data. It is not saved as part of the time/WQ simulation-specific data).
The initial status of a pipe is a property associated with each pipe in the system data. Therefore, it can also be entered/edited directly in the Pipe/CV table, or in the Link Info box (also referred to as the Database box) available in the Albion environment, or by the selective editing features available in the Albion environment.