Posted 23 January 2008 - 11:34 PM
Posted 24 January 2008 - 04:00 AM
I asked this same question about a year ago. So sad to know I was doing the same thing this time last year.
Anyway, thought this might help.
Edited by owillis28, 24 January 2008 - 04:01 AM.
Posted 25 January 2008 - 03:27 AM
The PE Notes wiki has something that should be pretty helpful in the pumps section. To access the wiki, see the thread http://engineerboard...?showtopic=4171
Posted 25 January 2008 - 03:22 PM
Posted 25 January 2008 - 03:29 PM
It's a delicate balance... "plug and chug" only works if you do enough different problems to be able to apply the pattern. In general, you need to know enough about the process to understand how to apply the equation. The key is knowing when too much is too much. Regarding this subject, I don't think it matters much if you know *how* cavitation occurs, but you do need to know *when* cavitation occurs.
Posted 26 January 2008 - 08:51 PM
I think this concept is fairly important to understand since there are several different aspects from which a question could be formulated. I think the CERM has a reasonably short and adequate explanation with an example problem. I always found it was easiest to draw a schematic when doing these types of problems and "track" the head differences through the schematic. Check out the CERM example.
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