| Applies To | |
| Product(s): | AutoPIPE |
| Version(s): | ALL; |
| Environment: | N/A |
| Area: | Anslysis |
| Original Author: | Bentley Technical Support Group |
| Date Logged & Current Version | Feb. 2017 11.00.00.22 |
Problem:
How to define a Reflected Transient?
Solution:
The user can also specify one reflected wave as long as unique TIH file names can be generated.
The sign on the reflected transient is as follows:
-
-
-
If the reflection is at an open or a tank end, the reflected wave will be opposite to the incident wave (i.e. negative pressure rise if original transient was positive)
-
If the reflection is at a closed end, the reflected wave will be same sign as the incident wave (i.e. positive pressure rise if original transient was positive)
-
-
Hint: The end time of the transient can be read from the displayed THL file information.
Care should be taken when generating reflected wave functions as it can overwrite existing TIH files. This is especially the case when the function generated is due to flow rate change, segment or direction change (kink). Generally speaking if all the points along the transient are bends, except for the starting point, a reflected wave can be generated successfully, since one transient will use the one bend point (e.g. N), while the reflection will use the other bend point (e.g. F)