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-   -   is the contours of absolute pressure will be negative...? (http://www.cfd-online.com/Forums/fluent/82829-contours-absolute-pressure-will-negative.html)

nareshnkk December 7, 2010 07:23

is the contours of absolute pressure will be negative...?
 
hi im doing analysis for propeller, i got the negative pressure as:
minimum is 0.1mpa and maximum is 0.35mpa

teguhtf December 8, 2010 03:06

Quote:

Originally Posted by nareshnkk (Post 286349)
hi im doing analysis for propeller, i got the negative pressure as:
minimum is 0.1mpa and maximum is 0.35mpa

Hy there,
I think absolute pressure is positive. pressure can be negative if it is gage pressure. For analyzing the pressure, you can try Cp (coefficient of pressure)..
hope it helps
teguhtf

nareshnkk December 8, 2010 04:09

thanq for giving reply

-mAx- December 9, 2010 02:13

absolute negative pressure may show cavitation genereration (although negative absolute pressure is physically impossible)


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