Operating Pressure and Outlet Pressure

gustavosimiema · August 10, 2015, 05:49

Hi,

If I would like to work with 1 Pa pressure. So I Need to set Operating Pressure as 1 Pa and pressure outlet 0 Pa?
It will Change if the pressure outlet of the Domain changes?
For example, how would it be in the following 2 cases?

1) pressure outlet of the Domain = 1Pa

2) pressure outlet of the Domain = 101325 Pa

thanks

LuckyTran · August 10, 2015, 08:23

The default operating pressure is 101325 Pa. Pressures are specified in gage pressures so if you set the operating pressure as 1 Pa and:

1) pressure outlet = 1 Pa
the outlet would be at an absolute pressure of 1 + 1 = 2 Pa
2) pressure outlet = 101325 Pa
the outlet would be at an absolute pressure of 1 + 101325 = 101326 Pa

gustavosimiema · August 10, 2015, 10:36

Thank you for your answer.

So based on what you have said, if I set the Operating Pressure as 1Pa, and outlet pressure as 0Pa, then the absolute Presurre in the Outlet will be --> 1 + 0 = 1Pa, correct?
So I set right because I would like to work with low pressure, correct?

LuckyTran · August 10, 2015, 12:05

Yup.

Good luck.

August 10, 2015, 05:49	Operating Pressure and Outlet Pressure	#1
gustavosimiema Senior Member Gustavo Join Date: Jun 2015 Posts: 121 Rep Power: 10	Hi, If I would like to work with 1 Pa pressure. So I Need to set Operating Pressure as 1 Pa and pressure outlet 0 Pa? It will Change if the pressure outlet of the Domain changes? For example, how would it be in the following 2 cases? 1) pressure outlet of the Domain = 1Pa 2) pressure outlet of the Domain = 101325 Pa thanks

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August 10, 2015, 08:23		#2
LuckyTran Senior Member Lucky Join Date: Apr 2011 Location: Orlando, FL USA Posts: 5,675 Rep Power: 66	The default operating pressure is 101325 Pa. Pressures are specified in gage pressures so if you set the operating pressure as 1 Pa and: 1) pressure outlet = 1 Pa the outlet would be at an absolute pressure of 1 + 1 = 2 Pa 2) pressure outlet = 101325 Pa the outlet would be at an absolute pressure of 1 + 101325 = 101326 Pa

August 10, 2015, 10:36		#3
gustavosimiema Senior Member Gustavo Join Date: Jun 2015 Posts: 121 Rep Power: 10	Thank you for your answer. So based on what you have said, if I set the Operating Pressure as 1Pa, and outlet pressure as 0Pa, then the absolute Presurre in the Outlet will be --> 1 + 0 = 1Pa, correct? So I set right because I would like to work with low pressure, correct?

August 10, 2015, 12:05		#4
LuckyTran Senior Member Lucky Join Date: Apr 2011 Location: Orlando, FL USA Posts: 5,675 Rep Power: 66	Yup. Good luck.