20 September 2019 3 4K Report

Hi friends,

Dels is a surface gradient operator which we applying to find the tangential velocity along a surface/arc. It can be written as

Dels = (I-nn).Del,

Where I is the identity matrix. But I don't know, how to write it in COMSOL to find the tangential velocity component along the surface/arc. Please, can someone explain it?. Thank you so much.

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