Learning Forum

[Dana Kang]

Hi, I'm currently designing a simple flow design using porous media (metal foam), and it shows me the error below when I set the cell zone condition for the metal foam :

 

Error: CAR: invalid argument [1]: wrong type [not a pair]

Error Object: ()

 

Above are the settings I used for the metal foam porous zone, and it displays the error when I click 'Apply'.

Any help would be appreciated. Thank you in advance!

[Rob]

It usually means there's a blank field somewhere, ie something is missing from the set-up. Check the remainder of the panel, but there is a slight chance you've turned something on/off earlier in the set-up and corrupted a value call in the GUI. See if turning some of the options on/off clears the issue. 

The changed settings report, Input Summary > List Changes can help if you look for empty fields. 

[Dana Kang]

Hi Rob,

Thank you for your reply. I checked the modified settings summary and it shows a note that ‘Reinjected particles do not change their injection association’ and a random value.

Could this be what’s causing the error? If so, would there be any possible ways to solve this?

Thank you in advance.

 

 

 

[Rob]

Don't think so, but it's something to switch off before trying the porous zone again. 

Double check what your interface zones are for: did you check the nonconformal set up?

[Dana Kang]

Hi Rob, where could I check the non-conformal setup?

[Rob]

That looks like you don't have any. That may be correct for the non-equilibrium model, but if you read up on https://ansyshelp.ansys.com/account/Secured?returnurl=/Views/Secured/corp/v232/en/flu_ug/flu_ug_sec_grid_nonconform.html  especially 6.6.4.1 you can switch to the manual mode and double check. 

[Dana Kang]

 

I tried checking the mesh interfaces but it looks like I don’t have any. Would this be an issue?

Or is there anything else I could try to solve the problem?

 

[Rob]

According to that list there are no interface zones either. Have you read a new mesh into Fluent in Workbench, or by re-reading the grid? I'm wondering if something has got scrambled or corrupted in the set up. 

[Dana Kang]

I tried redoing it in a new project in workbench but the issue is persistent : (

I set the case, battery, lid bodies as solids, and metal foam, inlet_body, outlet_body, fluid bodies as fluids in Ansys.

The error doesn’t show when I run Fluent after suppressing the ‘fluid’ body.

 

 

 

 

[Rob]

I'm not permitted to download anything. 

The foam volume will be created in Fluent when you turn on the non-equilibrium model, so you should just be importing fluid, fluid-porous and casing as zones (2 fluid & 1 solid). The porous "solid" is set by Fluent, and you shouldn't need to interact with that.