Transport of Diluted Species - Applying Flux to inner objects

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I have 3D geometry model in COMSOL and using Transport of Diluted Species module. I have few smaller spheres inside one bigger sphere. I cannot apply Flux option to the inner spheres (smaller ones).

I have tried the same in 2D - but the outcome is the same. Why? Is this possible at all? GOAL> smaller spheres are cells with absorbing boundary. [beginner in COMSOL]

0 Replies Last Post Jul 6, 2022, 11:23 a.m. EDT
COMSOL Moderator

Hello Milica Lekic

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