Learning Forum

[Harsh Lakkalkatti]

Hello,

I have been trying to use the battery MSMD model (I'm using Ansys 2023R1) for my LFP 32700 cell. I have been referring to this YouTube series. I have a doubt regarding the material properties. In this video, which uses an older version of Ansys, there is a separate parameter called UDS diffusivity in kg/m-s units. However, in 2023R1, it lies under the electrical conductivity option, but in a completely different unit, S/m. 

My UDS diffusivity in older version was defined-per-uds in kg/m-s with the following values:
uds-0 : 1.19e6
uds-1 : 9.83e5

Are these completely different things with different units? Can I put the values from previous versions in kg/m-s, into 2023R1 in S/m? Can someone please give me some clarity in terms of units, definitions, or conversions of the numbers (from kg/m-s to S/m, if any)?

Thank you for your time. 

[Murari Iyengar]

Hi, you can look through Electrical Conductivity based on Diffusion Coefficients (aqion.de) for the relation between the two units.