Pressure monitor plotting

mat_cfd · July 10, 2012, 03:18

Hi everybody,

How can I plot pressure monitor in addition to residual plots while using CFX solver. I tried new monitor tab in workspace but didnt find option to plot pressure value in plot line option.

ghorrocks · July 10, 2012, 07:03

You have to set up a monitor point which takes the pressure at a point. Then that value will be available at the solver manager.

mat_cfd · July 12, 2012, 01:00

Hi Glenn,
Thanks for reply. But it is still not very clear to me. I wish to plot Pressure values at inlet, outlet or any section plane in domain to have extra check on convergence apart from residual plots. I can see option to plot mass flow in Workspace--New monitor---Plot line---Flow tab but there is no option for pressure values.
As you told to set monitor point but where to do it and also I am interested in plotting Avg Pressure value on whole boundary and not at particular points. Any help in this regard will be greatly appreciated.

ghorrocks · July 12, 2012, 08:07

If you want average pressure over a boundary then define a monitor point with the CEL expression something like "areaAve(p)@inlet".

SanjayAN27 · October 3, 2023, 06:43

Predefine the monitor in ANSYS CFX Pre
Outline->Expressions, Functions and Variables->Expressions (Right-click) -> Insert->Expression
Definition: areaAve(Pressure)@outlet or areaAve(Pressure)@inlet. [Apply]

Outline->Output Control->Monitor (tab)->Monitor tabs and expression-> New Monitor-> Option: Expression-> Expression Value (Right click & select expression)same as Expression defined.

RUN
In solver,
New Monitor->USER POINT->Monitor defined [check box]

July 10, 2012, 03:18	Pressure monitor plotting	#1
mat_cfd New Member Join Date: Oct 2011 Posts: 20 Rep Power: 14	Hi everybody, How can I plot pressure monitor in addition to residual plots while using CFX solver. I tried new monitor tab in workspace but didnt find option to plot pressure value in plot line option.

October 3, 2023, 06:43	Pressure monitor plotting	#5
SanjayAN27 New Member Sanjay A N Join Date: Oct 2023 Posts: 1 Rep Power: 0	Predefine the monitor in ANSYS CFX Pre Outline->Expressions, Functions and Variables->Expressions (Right-click) -> Insert->Expression Definition: areaAve(Pressure)@outlet or areaAve(Pressure)@inlet. [Apply] Outline->Output Control->Monitor (tab)->Monitor tabs and expression-> New Monitor-> Option: Expression-> Expression Value (Right click & select expression)same as Expression defined. RUN In solver, New Monitor->USER POINT->Monitor defined [check box]

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July 10, 2012, 07:03		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,690 Rep Power: 143	You have to set up a monitor point which takes the pressure at a point. Then that value will be available at the solver manager.

July 12, 2012, 01:00		#3
mat_cfd New Member Join Date: Oct 2011 Posts: 20 Rep Power: 14	Hi Glenn, Thanks for reply. But it is still not very clear to me. I wish to plot Pressure values at inlet, outlet or any section plane in domain to have extra check on convergence apart from residual plots. I can see option to plot mass flow in Workspace--New monitor---Plot line---Flow tab but there is no option for pressure values. As you told to set monitor point but where to do it and also I am interested in plotting Avg Pressure value on whole boundary and not at particular points. Any help in this regard will be greatly appreciated.

July 12, 2012, 08:07		#4
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,690 Rep Power: 143	If you want average pressure over a boundary then define a monitor point with the CEL expression something like "areaAve(p)@inlet".