QUESTION: Do you have an example demonstrating the capability and procedure for calculating eigen frequencies and eigen modes of a coupled cavity device, such as a travelling wave tube? I would like to be able to prescribe either even or odd periodicity on the ends of the mesh of a single cavity to represent the infinte extension of a series of cavities connected in series.

ANSWER: The attached zip file contains a presentation summarizing field distributions and natural frequencies of the first 5 modes of a hypothetical coupled cavity for both even and odd periodic boundary conditions at planes between the cavities (a single cavity is modeled).

This is a new feature at release 11, which is still beta.


QUESTION: Do you have an example demonstrating the capability and procedure for calculating eigen frequencies and eigen modes of a coupled cavity device, such as a travelling wave tube? I would like to be able to prescribe either even or odd periodicity on the ends of the mesh of a single cavity to represent the infinte extension of a series of cavities connected in series.

ANSWER: The attached zip file contains a presentation summarizing field distributions and natural frequencies of the first 5 modes of a hypothetical coupled cavity for both even and odd periodic boundary conditions at planes between the cavities (a single cavity is modeled).

This is a new feature at release 11, which is still beta.





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