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How to write variables in proper syantax ?

Posted 12 lug 2025, 19:25 CEST 0 Replies

Rahul Karmankar NITW

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Respected professor, I am using COMSOL M version 6.0 for my work ,Topology optimization of Heat sink. As I am not expert facing some problems while inputting the parameters. Problems 1} While using Brinkman's equation for topology optimization of heat sink, what are the physics I have to select ? 2] Inverse Permeability, how to write ?

α (ρ) = α_min + (α_max - α_min) q(1-ρ)/q+ρ   

As a variable how can I write in proper syntax

α_simp = α_min + (α_max - α_min) comp1.dtopo1(k_simp*ht. q(1-theta^n)/(q+theta^n)

Is it correct ? if not please suggest me.I tried but showing error.

Thanks

-------------------
RahulK

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