Talk:Water hammer

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Why is this article in the firefighting category? --Andrew 20:04, Feb 7, 2005 (UTC)

I'm not sure... perhaps it has some relevance to fluid flow in fire hoses and fire sprinkler systems? -- FP 12:22, Feb 26, 2005 (UTC)

I'll take it out. --Andrew 08:37, Feb 27, 2005 (UTC)

It's linked from Fire hydrant. Kim Bruning 04:02, 10 January 2006 (UTC)

Edited a lot hope you like it. Joukowsky and rigid column theory could be explained. User:Ike 22:23, 02 April 2007 (UTC)

Contents

[edit] Other source of water hammer.

I'm not sure where to write it in, but water hammer also happens when heaving long pipes that are full of water. When this happens, there is a brief production of water vapour in a partial vacuum before the hammer. Colinvincent 06:33, 22 March 2007 (UTC)

The sentence in the section Mitigating measures that begins, "Often accidents will occur that could hardly be foreseen (sudden release of air pockets) or are" ends abruptly and doesn't represent a complete thought. A list of mitigating measures against the water hammer effect immediately follows, but the list isn't given any introduction or title. It's almost as though someone cut out some text, but forgot to paste it again. I'm not knowledgeable about water hammers, otherwise I would do the edit myself. Anyone feel up to the task? Fungicord 02:17, 7 May 2007 (UTC)

[edit] Explosion in NYC caused by water hammer effect

According to this news report. I don't know enough about the subject to update the article.

The "New York Water Hammer Incident" subsection doesn't really belong here. It should be moved to another article with a link from the "See Also" of this page. Tvh2k 01:32, 19 July 2007 (UTC)

[edit] Removed section: New York Water Hammer Incident

Perhaps this section (and other notable water hammers) will be of use when more reliable sources are included. The article above mentions that it's only speculation. Ichibani utc 04:08, 19 July 2007 (UTC)

On July 18th 2007 New York experienced an explosion of an underground steam pipe near Grand Central Terminal venting steam, mud, and debris. It has not been confirmed, but one theory is that the explosion may have been caused by the water hammer effect. The initial explosion is cited by Associated Press writer Adam Goldman to have been "as high as the nearby Chrysler Building".


[edit] Replaced kinetic energy equations by Joukowky equation

The magnitude of the Water hammer pulse is proportional to the velocity of the flow. Also, after the pipe is of a certain length the magnitude of the pulse remains the same. So it has little to do with the kinetic energy of the flow. I will elucidate the derivation when I get to a textbook. Donebythesecondlaw (talk) 19:34, 10 April 2008 (UTC)