Check 26.2.10.2.6 in https://ansyshelp.ansys.com/account/Secured?returnurl=/Views/Secured/corp/v242/en/flu_ug/flu_ug_sec_multiphase_setup.html%23flu_ug_sec_mphase_massxfr and see if an example for DEFINE_MASS_TRANSFER will load OK. It doesn't need to be what you want in the model, it's just to confirm it's the correct macro.Â
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