| Product(s): | Bentley Hammer |
| Version(s): | V8i, Connect Edition |
| Area: | Modeling |
When modeling a differential surge tank with a long riser pipe, does HAMMER account for any effects such as resistance/friction of the riser pipe wall, wave propagation and reflection inside the tank, etc?
No, the surge tank element is considered a boundary condition, so the Method of Characteristics calculations related to wave propagation and reflection do not apply inside the tank itself. Since these elements are assumed to be relatively small, HAMMER assumes that these effects and any resistance/friction from the riser pipe wall are neglected for a transient analysis.
If you expect the friction/resistance from a long length of riser pipe will have an effect on the transient response, I would recommend explicitly modeling that as a pipe element.