Why do you expect water hammer? Is there a valve at
the downstream end of the pipe that can be quickly
closed? If either of the two situations is
nonexistent, then there will be no water hammer. Bends
in the pipe do produce some unbalanced forces, but are
generally not very significant. For such static
loading, an analysis by "CAESAR" or "AUTOPIPE" will
give you all the information you need for checking the
adequacy of the piping system.
If water hammer is a possibility, then its seriousness
will depend on the nature of the pressure waves that
oscillate back and forth along the pipe. You will need
to perform a transient analysis before you can decide
on support conditions etc.
--- Suresh Acharya <engineer(--nospam--at)amexol.net> wrote:
> I have a 4" dia pipe supported at 8" o.c. Maximum
> pressure in the pipe
> could be as high as 200 psi; and the pipe has
> several 90-degree bends.
> Does the water hammer phenomenon have any effects
> other other than simply
> increasing the pressure in the pipe and hence the
> force at the supports;
> are there any vibrations associated with water
> hammer that would increase
> forces in the support? I appreciate any reference to
> this kind of problem.
> Suresh Acharya,P.E.
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