What is the "Travel time" result field, and why can it sometimes not be graphed?Problem ID#: 68103
he "Travel Time" field shows the time that it would take for water to travel from one end of the pipe to the other at the current velocity. Basically, it's the length of the pipe divided by the velocity. As can be done with any field, you click it in the properties window and see a short description at the bottom of the properties. Although you may be able to graph this, there may not always be a valid value.
For example, if the velocity is zero (from a pump being off), or near-zero (below a certain threshold) the "Travel time" will show as "N/A" and cannot be accurately graphed. It may be best to look at the value shown in the properties before attempting to graph it. It may also be worth looking at the value in the properties for several timesteps since it could certainly change over the course of an EPS. This can be done using the "Time Browser" under the Analysis menu.
Discrepancy in the water age results for models with short pipes and short travel times.