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Surface Pressure in Pascal

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Message 1 of 3
864297531
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Surface Pressure in Pascal

Hi,

 

I have one question. I don´t know really whether I told you my question or not. Because of that sorry if  you already know my question. My problem is the surface pressure on the models. There is positiv and negative pressure. But in real world there isn´t any negative pressure. What means this negative pressure. That I have to calculate the normalpressure (air pressure) minus/plus the pressure in the software. Or is it the direction where the pressure takes any effect?

 

I Hope you can understand my question and my english. Thank you for your trouble.

 

 

Lucas

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Message 2 of 3
hartogj
in reply to: 864297531

Pressures are shown in terms of gage pressure which references standard conditions. It is offset from absolute pressure by a fixed amount.

 

A reading of 0 pressure corresponds to normal ambient (ie. barometric) pressure.


This page has a diagram that may be helpful for explaining the relationship:  http://www.engineeringtoolbox.com/pressure-d_587.html

 

Jon

 



Jon den Hartog

Product Manager
Message 3 of 3
ndiaz28YGY3Q
in reply to: hartogj

As long as I know, te negative pressure means suction. 

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