What do modal numbers mean in resonant frequency calculations?

[Myrddin]

Am doing a project about a resonance chamber, investigating resonances frequenies and hows different variables can affect them but need some clarification on the modal numbers

so resonant frequencies are found from f=(c/2)[(Nx/Lx)^2(Ny/Ly)^2(Nz/Lz)^2]^1/2

find values using n = 1,0,0..,1,1,0 etc but what's do they actually mean? thanks

 

[Redbelly98]

1,0,0 would refer to the values of Nx, Ny, and Nz.

 

[Myrddin]

Yes i know that, but what's their actual meaning?

 

[Redbelly98]

Okay, now I understand what you're asking.

Each number refers to the number of half-wavelengths, or antinodes, that fit within the length (Lx, Ly, or Lz). Something like this:

Hope that helps.