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Difference betwwen small x and LARGE X.

Posted Oct 11, 2019, 12:15 a.m. EDT Low-Frequency Electromagnetics, Structural & Acoustics 1 Reply

Muhammad Taimoor Saleem
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When i run magnetic field module. after simulation i want to know electromagnetic force. expressions list shows two type of force, one with small x,y,z component and other with large X,Y,Z components. what is the difference between them.

1 Reply Last Post Oct 11, 2019, 7:03 a.m. EDT
Henrik Sönnerlind COMSOL Employee

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Posted: 5 years ago Oct 11, 2019, 7:03 a.m. EDT

Hi,

The convention is that lower case indices refer to the spatial frame (Eulerian; space fixed orientations) and uppercase indices refer to the material frame (Lagrangian; material orientations).

Regards,
Henrik

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Henrik Sönnerlind
COMSOL
Hi, The convention is that lower case indices refer to the spatial frame (Eulerian; space fixed orientations) and uppercase indices refer to the material frame (Lagrangian; material orientations). Regards, Henrik

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