is the contours of absolute pressure will be negative...?

nareshnkk · December 7, 2010, 06:23

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, 02:06

Quote:

Originally Posted by nareshnkk

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, 03:09

thanq for giving reply

-mAx- · December 9, 2010, 01:13

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

December 7, 2010, 06:23	is the contours of absolute pressure will be negative...?	#1
nareshnkk New Member naresh Join Date: Oct 2010 Posts: 6 Rep Power: 15	hi im doing analysis for propeller, i got the negative pressure as: minimum is 0.1mpa and maximum is 0.35mpa

December 9, 2010, 01:13		#4
-mAx- Super Moderator Maxime Perelli Join Date: Mar 2009 Location: Switzerland Posts: 3,297 Rep Power: 41	absolute negative pressure may show cavitation genereration (although negative absolute pressure is physically impossible) __________________ In memory of my friend Hervé: CFD engineer & freerider

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December 8, 2010, 03:09		#3
nareshnkk New Member naresh Join Date: Oct 2010 Posts: 6 Rep Power: 15	thanq for giving reply