Inputting pressure gradient in Fluent

Josyula · December 22, 2009, 04:22

Hi,

I want to know how to input a pressure gradient in Fluent.

I have a straight horizontal rectangular minichannel and need a pressure gradient of 1500 Pa across the channel.

Is the pressure gradient calculated as the pressure at outlet (suppose 1800 Pa) minus pressure at the inlet (suppose 300 Pa)? Or how is it calculated?

Thanks!

anshulmittal1912 · December 22, 2009, 21:23

I think you mean pressure difference across the channel to drive the flow.
Yes, it is the pressure at inlet (1800) minus the pressure at outlet (300).

Anshul

Josyula · December 23, 2009, 07:26

Anshul,

Thank you for your reply. I shall try as you suggested & see if it works.

December 22, 2009, 04:22	Inputting pressure gradient in Fluent	#1
Josyula New Member Josy Join Date: Mar 2009 Location: India Posts: 29 Rep Power: 17	Hi, I want to know how to input a pressure gradient in Fluent. I have a straight horizontal rectangular minichannel and need a pressure gradient of 1500 Pa across the channel. Is the pressure gradient calculated as the pressure at outlet (suppose 1800 Pa) minus pressure at the inlet (suppose 300 Pa)? Or how is it calculated? Thanks!

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December 22, 2009, 21:23		#2
anshulmittal1912 New Member Anshul Mittal Join Date: Apr 2009 Posts: 8 Rep Power: 16	I think you mean pressure difference across the channel to drive the flow. Yes, it is the pressure at inlet (1800) minus the pressure at outlet (300). Anshul

December 23, 2009, 07:26		#3
Josyula New Member Josy Join Date: Mar 2009 Location: India Posts: 29 Rep Power: 17	Anshul, Thank you for your reply. I shall try as you suggested & see if it works.