# Cfx solver manager: How to set correct y-axis value of pressure in monitor graph.

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 April 2, 2014, 21:51 Cfx solver manager: How to set correct y-axis value of pressure in monitor graph. #1 Member   Faizan Join Date: Mar 2014 Posts: 76 Rep Power: 5 Hi all, I set the total pressure monitor at inlet to monitor my solution during run in cfx solver manager. I set 1.4MPa total pressure at inlet but the graph is showing 0MPa. I don't know how to fix y-axis of graph? Picture is attached. I know its basic question but I am a beginner. It is very important for me. Please help if anyone know.... thanks Last edited by Mfaizan; December 17, 2015 at 23:46.

April 2, 2014, 22:37
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 Originally Posted by Mfaizan Hi all, I set the total pressure monitor at inlet to monitor my solution during run in cfx solver manager. I set 1.4MPa total pressure at inlet but the graph is showing 0MPa. I don't know how to fix y-axis of graph? Picture is attached. I know its basic question but I am a beginner. It is very important for me. Please help if anyone know.... thanks

 April 2, 2014, 23:02 #3 Member   Faizan Join Date: Mar 2014 Posts: 76 Rep Power: 5 Hi antanas, - My initial condition at inlet set to total pressure 1.4MPa with total temp 550 deg Centigrade. - Fluid model set to Total energy.(supersonic flow) - Expression for pressure monitor at inlet = areaAve(Total Pressure)@inlet Please suggest. Thanks

April 3, 2014, 00:58
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Quote:
 Originally Posted by Mfaizan Hi antanas, - My initial condition at inlet set to total pressure 1.4MPa with total temp 550 deg Centigrade. - Fluid model set to Total energy.(supersonic flow) - Expression for pressure monitor at inlet = areaAve(Total Pressure)@inlet Please suggest. Thanks

 April 3, 2014, 01:08 #5 Senior Member   Bharath kumar Join Date: Apr 2009 Posts: 169 Rep Power: 10 Hi Mfaizan In your screen shot it is not 0 MPa.Please click your cursor on the Monitor line to get the actual value. You can adjust your monitor point range by right click on the solver window -> Monitor properties ->Range settings ->adjust Lower bound & Upper bound Value. Mfaizan likes this.

April 3, 2014, 01:13
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 Originally Posted by bharath Hi Mfaizan In your screen shot it is not 0 MPa.Please click your cursor on the Monitor line to get the actual value. You can adjust your monitor point range by right click on the solver window -> Monitor properties ->Range settings ->adjust Lower bound & Upper bound Value.
Yes I think this is because of initial pressure and reference pressure values. So it seems that it is zero.

 April 4, 2014, 02:29 #7 Member   Faizan Join Date: Mar 2014 Posts: 76 Rep Power: 5 dear bharat, thanks a lot for your assistance. Yes after changing range I saw the 1.4MPa value but it I am still confused that with constant 1.4MPa total pressure boundary condition at inlet why this large negative value of pressure is appearing in the model. I checked the lowest value by putting my cursor on the monitor and it is showing -1.7e7. This is crazy. If you can assist then please explain this. One more question that how can I change the X-axis settings of the pressure monitor tab. Please reply.

 April 6, 2014, 08:27 #8 Super Moderator   Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 13,852 Rep Power: 107 When the simulation is partially converged the results can show anything. Don't worry about crazy intermediate results - the final converged solution is all that matters. Mfaizan likes this.

 April 6, 2014, 20:20 #9 Member   Faizan Join Date: Mar 2014 Posts: 76 Rep Power: 5 Thanks ghorrocks!

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