Pipes length adjustment in Hammer?

Hello Mohamed,

The length adjustment in HAMMER depends on your wave speed and the time step considered for analysis.

For E.g. if a pipe is of 150 m with a wave speed of 200 m/s and a time step of 1 sec then the pipe length would have to be increased by 50 m (150+50 = 200 m) so that the transient wave can travel the distance in 1 sec.

Here is a relevant article which can guide you on length and wave speed adjustments.

Understanding length/wave speed adjustments and their impact on results

In general a smaller time-step will give you more accurate results. This is because a smaller time step leads to fewer adjustments in lengths. Whereas a larger time-step can increase the lengths substantially leading to skewed results which may not reflect the true conditions in your system.

Hope this helps.

Hello Mohamed,

The length adjustment in HAMMER depends on your wave speed and the time step considered for analysis.

For E.g. if a pipe is of 150 m with a wave speed of 200 m/s and a time step of 1 sec then the pipe length would have to be increased by 50 m (150+50 = 200 m) so that the transient wave can travel the distance in 1 sec.

Here is a relevant article which can guide you on length and wave speed adjustments.

Understanding length/wave speed adjustments and their impact on results

In general a smaller time-step will give you more accurate results. This is because a smaller time step leads to fewer adjustments in lengths. Whereas a larger time-step can increase the lengths substantially leading to skewed results which may not reflect the true conditions in your system.

Hope this helps.