Dear Richard Ay,

To reduce the effect of water hammer one of the way is to have long straight length of the pipeline from the water hammer source so that the hammer force shall be diminishes due to the friction force.

If i am wrong please clarif.

In my case, after some 4 elbow pairs, in the fifth elbow pair i inputted the hammer force in the DLF spectrum generator as (length between elbow pair is 200 meter, hammer force is 73313 N and Speed of sound is 1257 m/s)

0 ms - 0 N
5 ms - 73313 N
159.1 ms - 73313 N
164.1 ms - 0 N

In the DLF spectrum generator, it seems that the hammer force will be developed within 5 ms and it continues till 159.1 ms and after 5 ms the hammer load will come to zero force.

From the DLF spectrum it is seen that as the straight length between the elbow pairs increases, the effect of hammer load will be more or the displacement at the end of elbow pair will be high.

Please clarify...