Ansys Fluent 17.0 Expression

u_k · May 7, 2019, 13:49

In report definition i cannot create the expression. The option is freezed

. Can some one please help me with this????......

Report Definitions -->New--->Expression

MKuhn · May 9, 2019, 06:22

As the Expressions are created from Report Defnitions, you have to create first a Report Definition (avarage temperature of a surface or volume). Than you can create an Expression like ReportDefinition1 * ReportDefiniont2 * 1000.

AlexanderZ · May 9, 2019, 08:06

Quote:

Originally Posted by MKuhn

As the Expressions are created from Report Defnitions, you have to create first a Report Definition (avarage temperature of a surface or volume). Than you can create an Expression like ReportDefinition1 * ReportDefiniont2 * 1000.

using User-defined -> Custom Field Function Calculator

best regards

u_k · May 9, 2019, 09:37

Thanks Mkuhn, yes i tried it just the way you have suggested. I created two report definitions i.e (area weighted average--Absolute pressure at inlet & outlet) and then i went to report definition to give an expression for their difference to calculate pressure drop but the option for Expression remains freezed

but in version 18 and 19 its working just the way you said.

u_k · May 9, 2019, 09:42

Quote:

Originally Posted by AlexanderZ

using User-defined -> Custom Field Function Calculator

best regards

@alexander Z, thanks

, can you please explain it a bit more? I mean how should i go for it for calculation of pressure drop i.e for taking pressure difference between inlet and outlet?

AlexanderZ · May 9, 2019, 23:54

Quote:

Originally Posted by u_k

Thanks Mkuhn, yes i tried it just the way you have suggested. I created two report definitions i.e (area weighted average--Absolute pressure at inlet & outlet) and then i went to report definition to give an expression for their difference to calculate pressure drop but the option for Expression remains freezed

but in version 18 and 19 its working just the way you said.

as I said, make these first steps, than goto User-defined -> Custom Field Function Calculator and create an expression using your definitions

best regards

u_k · May 10, 2019, 06:21

Quote:

Originally Posted by AlexanderZ

as I said, make these first steps, than goto User-defined -> Custom Field Function Calculator and create an expression using your definitions

best regards

Thanks AlexanderZ, i have repeated these steps again but this expression option is still freezed or unavailable

.

AlexanderZ · May 13, 2019, 01:56

create your expression in calculator

best regards

u_k · May 13, 2019, 07:15

in calculator i can give the formula for the calculation of pressure drop but i want to give an expression for the subtraction of already created inlet pressure and outlet pressure report functions. which i tried as well but i dont know why it just didnt work. I might be getting it wrong. Can you please attach some of the screen shots if its possible.
Thanks in advance

May 7, 2019, 13:49	Ansys Fluent 17.0 Expression	#1
u_k New Member Join Date: May 2019 Posts: 25 Rep Power: 7	In report definition i cannot create the expression. The option is freezed . Can some one please help me with this????...... Report Definitions -->New--->Expression

May 9, 2019, 06:22		#2
MKuhn Senior Member Moritz Kuhn Join Date: Apr 2010 Location: Germany, Dresden Posts: 218 Rep Power: 17	As the Expressions are created from Report Defnitions, you have to create first a Report Definition (avarage temperature of a surface or volume). Than you can create an Expression like ReportDefinition1 * ReportDefiniont2 * 1000. Mkalantar likes this.

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May 9, 2019, 09:37		#4
u_k New Member Join Date: May 2019 Posts: 25 Rep Power: 7	Thanks Mkuhn, yes i tried it just the way you have suggested. I created two report definitions i.e (area weighted average--Absolute pressure at inlet & outlet) and then i went to report definition to give an expression for their difference to calculate pressure drop but the option for Expression remains freezed but in version 18 and 19 its working just the way you said.

May 13, 2019, 01:56		#8
AlexanderZ Senior Member Alexander Join Date: Apr 2013 Posts: 2,363 Rep Power: 34	create your expression in calculator best regards

May 13, 2019, 07:15		#9
u_k New Member Join Date: May 2019 Posts: 25 Rep Power: 7	in calculator i can give the formula for the calculation of pressure drop but i want to give an expression for the subtraction of already created inlet pressure and outlet pressure report functions. which i tried as well but i dont know why it just didnt work. I might be getting it wrong. Can you please attach some of the screen shots if its possible. Thanks in advance