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force calculation use the Maxwell stress tensor
Posted 13 juin 2014, 23:08 UTC−4 RF & Microwave Engineering Version 4.3a 1 Reply
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I'm new to comsol and I have some questions as follows:
I have a model for force calculation of nanorod structure by the Maxwell stress tensor.
I use the expression as "emw.dnTx" to calculate the force (x component) . but the result is terrible.
firstly, I don't know the explicit definition of the expression"emw.dnTx". I just get the expression from a friend in the forum. But I don't know how to use it correctly.
Who can give me some refferences or relevant information? Thanks!
secondly, anyone has the similar model or the suggestion?
My model has been attached.
In the results-> derive value, I choose a surface and integrate it. The expression is "emw.dnTx"
Attachments:
Hello Zerong Yuan
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Try es.dnTex and en.dnTey instead of emw.dnTx and emw.dnTy if you need to calculate only electrostatic force on the boundary.
Cheers