Design Points

Nurzhan · August 21, 2015, 00:14

Dear experts,

I am using different design points in the ANSYS workbench to study a heat transfer problem. At each new design point, I would like to measure temperature at three particular points within my geometry, but the positions of the points of interest are different at each design point.

Currently, I get my results using CFD Post (specifying the coordinates of the points, then plotting a graph (Temperature vs Time), and exporting the result into a csv file). However, if I have many design points, it will take a lot of time to access to the result files using my current method.

Therefore, I would appreciate any suggestion about an optimisation of the result collection procedure?

Is there any possibility within ANSYS Workbench 15.0 to set the coordinates of the points of interest into each design point?

Ideally, I want to collect temperature of the points of interest out of all design points into one csv file.

Best regards,
Nurzhan

ghorrocks · August 21, 2015, 19:16

Make a new CEL variable defined as:

output = if(<some condition which defines which simulation you are in>,probe@point1,probe@point2)

Then you make variable output a parameter and it automatically picks the right monitor point for the simulation.

Nurzhan · August 21, 2015, 23:23

Thanks Glenn!

The method worked well.

Regards,
Nurzhan

Mareeah · October 30, 2019, 16:39

Dear all,

I am trying to do similar thing. Is there a possibility that these locations (coordinates of points) change automatically for every design point, considering that the x,y,z coordinates for each DP can be accessed through the parameter set or through a CST file.

ghorrocks · October 30, 2019, 19:44

I would not do that sort of thing in Workbench. If you run CFX stand-alone you can use perl to customise the setup of each run, or use a batch file which sets those sort of parameters per run.

Mareeah · January 29, 2020, 14:40

do you maybe know how a CST file can be automatically reread for each design point in cfd post? (since the info in cst is changing for each design point) otherwise it leaves the first cst state for all the design points..

ghorrocks · January 29, 2020, 17:32

I can't think of a way to do that. But I have not experimented with that much.

August 21, 2015, 00:14	Design Points	#1
Nurzhan Member Nurzhan Join Date: Jan 2014 Posts: 56 Rep Power: 12	Dear experts, I am using different design points in the ANSYS workbench to study a heat transfer problem. At each new design point, I would like to measure temperature at three particular points within my geometry, but the positions of the points of interest are different at each design point. Currently, I get my results using CFD Post (specifying the coordinates of the points, then plotting a graph (Temperature vs Time), and exporting the result into a csv file). However, if I have many design points, it will take a lot of time to access to the result files using my current method. Therefore, I would appreciate any suggestion about an optimisation of the result collection procedure? Is there any possibility within ANSYS Workbench 15.0 to set the coordinates of the points of interest into each design point? Ideally, I want to collect temperature of the points of interest out of all design points into one csv file. Best regards, Nurzhan

August 21, 2015, 23:23		#3
Nurzhan Member Nurzhan Join Date: Jan 2014 Posts: 56 Rep Power: 12	Thanks Glenn! The method worked well. Regards, Nurzhan Last edited by Nurzhan; August 30, 2015 at 03:02.

October 30, 2019, 19:44		#5
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,716 Rep Power: 143	I would not do that sort of thing in Workbench. If you run CFX stand-alone you can use perl to customise the setup of each run, or use a batch file which sets those sort of parameters per run. __________________ Note: I do not answer CFD questions by PM. CFD questions should be posted on the forum.

January 29, 2020, 17:32		#7
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,716 Rep Power: 143	I can't think of a way to do that. But I have not experimented with that much. __________________ Note: I do not answer CFD questions by PM. CFD questions should be posted on the forum.

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August 21, 2015, 19:16		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,716 Rep Power: 143	Make a new CEL variable defined as: output = if(<some condition which defines which simulation you are in>,probe@point1,probe@point2) Then you make variable output a parameter and it automatically picks the right monitor point for the simulation.

October 30, 2019, 16:39		#4
Mareeah New Member Join Date: Sep 2019 Posts: 3 Rep Power: 6	Dear all, I am trying to do similar thing. Is there a possibility that these locations (coordinates of points) change automatically for every design point, considering that the x,y,z coordinates for each DP can be accessed through the parameter set or through a CST file.

January 29, 2020, 14:40		#6
Mareeah New Member Join Date: Sep 2019 Posts: 3 Rep Power: 6	do you maybe know how a CST file can be automatically reread for each design point in cfd post? (since the info in cst is changing for each design point) otherwise it leaves the first cst state for all the design points..