How to explain total pressure less than zero?

ahlo7 · August 28, 2009, 15:16

Hello,

It is quite often for me to see in my simulation (incompressible duct flow) some region of the flow has negative total pressure. Any one can help to explain what happen in the region with negative total pressure? Why?

It was analyzed in steady state not in transient state.

Thanks

Ahlo

Miky1020 · August 29, 2009, 11:00

Hi,

CFX-Post displays relative pressure instead absolute pressure. Watch out with this.

Mehul157@yahoo.com · September 16, 2009, 02:44

In order to avoid this situation , Please set your reference pressure higher.

August 28, 2009, 15:16	How to explain total pressure less than zero?	#1
ahlo7 New Member Join Date: Mar 2009 Posts: 8 Rep Power: 17	Hello, It is quite often for me to see in my simulation (incompressible duct flow) some region of the flow has negative total pressure. Any one can help to explain what happen in the region with negative total pressure? Why? It was analyzed in steady state not in transient state. Thanks Ahlo

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August 29, 2009, 11:00		#2
Miky1020 New Member Miguel Baritto Join Date: Mar 2009 Location: Caracas,Venezuela Posts: 16 Rep Power: 17	Hi, CFX-Post displays relative pressure instead absolute pressure. Watch out with this.

September 16, 2009, 02:44		#3
Mehul157@yahoo.com New Member Mehul Join Date: Mar 2009 Posts: 6 Rep Power: 17	In order to avoid this situation , Please set your reference pressure higher.