Transient Initialisation Override

elia_l · October 30, 2018, 06:45

Hi all,
could anyone explain me the difference that stands between "f" and "t" setting for field "transient initialisation override" inside the "Solver/Exper Parameters/Physical Models/Miscellaneous"?

Thanks in advance.

evcelica · October 30, 2018, 12:19

Have a look in the CFX-Solver modeling guide. All the expert parameters are listed in there.
f is false, t in true.

Expert Parameter: Transient initialisation override

Type: logical
Default value: f
Description: When set to 't', enables solver default values to be used for initializationin a transient simulation.

It's wierd that they spell "initialization" two different ways in their own documentation.
"s" is the British English spelling
"z" is the U.S. English spelling

elia_l · October 30, 2018, 23:41

thanks a lot evcelica! what does the term "logic" refer? do you know by chance which could be the difference of parameter settings between f and t?

Opaque · October 31, 2018, 08:00

boolean = logical

valid values are : true (t) and false (f)

elia_l · October 31, 2018, 08:35

okok, got it! thank you

evcelica · October 31, 2018, 08:37

I'm guessing with the default value of "f", it won't start a transient simulation unless you provide initial conditions.
If it is set to "t", it will automatically assign initial conditions.

I can see why the default is "f", it is a reminder to correctly set your initial conditions. It would be pretty lazy to not make an educated guess and just let the solver assign something (in most cases.)

elia_l · October 31, 2018, 09:43

understood! really thank you everybody

October 30, 2018, 06:45	Transient Initialisation Override	#1
elia_l New Member Join Date: Oct 2018 Posts: 22 Rep Power: 7	Hi all, could anyone explain me the difference that stands between "f" and "t" setting for field "transient initialisation override" inside the "Solver/Exper Parameters/Physical Models/Miscellaneous"? Thanks in advance.

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October 30, 2018, 12:19		#2
evcelica Senior Member Erik Join Date: Feb 2011 Location: Earth (Land portion) Posts: 1,167 Rep Power: 23	Have a look in the CFX-Solver modeling guide. All the expert parameters are listed in there. f is false, t in true. Expert Parameter: Transient initialisation override Type: logical Default value: f Description: When set to 't', enables solver default values to be used for initializationin a transient simulation. It's wierd that they spell "initialization" two different ways in their own documentation. "s" is the British English spelling "z" is the U.S. English spelling

October 30, 2018, 23:41		#3
elia_l New Member Join Date: Oct 2018 Posts: 22 Rep Power: 7	thanks a lot evcelica! what does the term "logic" refer? do you know by chance which could be the difference of parameter settings between f and t?

October 31, 2018, 08:00		#4
Opaque Senior Member Join Date: Jun 2009 Posts: 1,804 Rep Power: 32	boolean = logical valid values are : true (t) and false (f)

October 31, 2018, 08:35		#5
elia_l New Member Join Date: Oct 2018 Posts: 22 Rep Power: 7	okok, got it! thank you

October 31, 2018, 08:37		#6
evcelica Senior Member Erik Join Date: Feb 2011 Location: Earth (Land portion) Posts: 1,167 Rep Power: 23	I'm guessing with the default value of "f", it won't start a transient simulation unless you provide initial conditions. If it is set to "t", it will automatically assign initial conditions. I can see why the default is "f", it is a reminder to correctly set your initial conditions. It would be pretty lazy to not make an educated guess and just let the solver assign something (in most cases.)

October 31, 2018, 09:43		#7
elia_l New Member Join Date: Oct 2018 Posts: 22 Rep Power: 7	understood! really thank you everybody