CFX Initial Values file error

ameen0602 · January 9, 2012, 10:52

Hello,

Does any body know about the meaning of Global Error stated below?
-----------------------------------------
Global Error: In Analysis 'Flow Analysis 1' - Domain 'Default Domain': Transient analyses require that initial conditions are specified unless an Initial Values file is specified at run-time.

Global Error:
In Analysis 'Flow Analysis 1' - Output Control: No intermediate transient results files have been defined.

Lance · January 9, 2012, 12:08

Yep. It means that Transient analyses require:
1) that initial conditions are specified
or
2) unless an Initial Values file is specified

The second part says that you are not saving any intermediate result files.

ameen0602 · January 19, 2012, 06:07

Hello
Thanks but where I have to specify the initial condition for transient analysis?
for second error, which type of file I need and how to use it?

Lance · January 19, 2012, 06:16

You must either specify initial values or use a previous results file as initial condition. Initial conditions can be set under Default domain/initialization, or using Insert -> Global initialization. If you want to use another file as initial condition, specify it before starting the solver.

This is well covered in the manuals, see for example tutorial 6 on how to set up a transient analysis.

ameen0602 · January 19, 2012, 08:07

thanks, I got it

Cruiseee · December 29, 2016, 13:57

Quote:

Originally Posted by Lance

Yep. It means that Transient analyses require:
1) that initial conditions are specified
or
2) unless an Initial Values file is specified

The second part says that you are not saving any intermediate result files.

Hello,
can you elaborate how to solve second part error to me? I couldn't understand it?

zhihuawan · December 21, 2017, 03:15

In Analysis 'Flow Analysis 1' - Output Control: No intermediate transient results files have been defined.，this the error I meet，can you help me?

ghorrocks · December 21, 2017, 17:21

It means you have a transient simulation but you have defined no transient results files. It is just a warning, you can continue, but most people are interested in the transient flow development in transient simulations so you may have forgotten to set that up.

Yanlu · March 28, 2021, 05:20

Hello, I also encountered the same error. It happened when I switched the analysis type from steady state to transient state. The following is my solution, I hope it helps you.
For the first error, you can switch the tab to Initialize, change the Automatic under Cartesian Velocity Components and Static Pressure to Automatic with value, and fill in the number.
For the second error, you can switch the tab to Output Control, select the result you need and output.

January 9, 2012, 10:52	CFX Initial Values file error	#1
ameen0602 New Member ameen Join Date: Dec 2010 Posts: 4 Rep Power: 15	Hello, Does any body know about the meaning of Global Error stated below? ----------------------------------------- Global Error: In Analysis 'Flow Analysis 1' - Domain 'Default Domain': Transient analyses require that initial conditions are specified unless an Initial Values file is specified at run-time. Global Error: In Analysis 'Flow Analysis 1' - Output Control: No intermediate transient results files have been defined.

December 21, 2017, 03:15	In Analysis 'Flow Analysis 1' - Output Control: No intermediate transient results fil	#7
zhihuawan Member wan zhihua Join Date: Dec 2017 Posts: 67 Rep Power: 9	In Analysis 'Flow Analysis 1' - Output Control: No intermediate transient results files have been defined.，this the error I meet，can you help me?

December 21, 2017, 17:21		#8
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,871 Rep Power: 144	It means you have a transient simulation but you have defined no transient results files. It is just a warning, you can continue, but most people are interested in the transient flow development in transient simulations so you may have forgotten to set that up. aero_head likes this.

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January 9, 2012, 12:08		#2
Lance Senior Member Lance Join Date: Mar 2009 Posts: 669 Rep Power: 22	Yep. It means that Transient analyses require: 1) that initial conditions are specified or 2) unless an Initial Values file is specified The second part says that you are not saving any intermediate result files.

January 19, 2012, 06:07		#3
ameen0602 New Member ameen Join Date: Dec 2010 Posts: 4 Rep Power: 15	Hello Thanks but where I have to specify the initial condition for transient analysis? for second error, which type of file I need and how to use it?

January 19, 2012, 06:16		#4
Lance Senior Member Lance Join Date: Mar 2009 Posts: 669 Rep Power: 22	You must either specify initial values or use a previous results file as initial condition. Initial conditions can be set under Default domain/initialization, or using Insert -> Global initialization. If you want to use another file as initial condition, specify it before starting the solver. This is well covered in the manuals, see for example tutorial 6 on how to set up a transient analysis.

January 19, 2012, 08:07		#5
ameen0602 New Member ameen Join Date: Dec 2010 Posts: 4 Rep Power: 15	thanks, I got it

March 28, 2021, 05:20		#9
Yanlu Member Evelyn Join Date: Mar 2021 Posts: 32 Rep Power: 5	Hello, I also encountered the same error. It happened when I switched the analysis type from steady state to transient state. The following is my solution, I hope it helps you. For the first error, you can switch the tab to Initialize, change the Automatic under Cartesian Velocity Components and Static Pressure to Automatic with value, and fill in the number. For the second error, you can switch the tab to Output Control, select the result you need and output.