How about you, Torsten? How do you decide which approach is best to analyse loop phenomena?
I'd do a "market research" first, collect papers, principles etc. What we like to do then in our company for example is then to construct a decision matrix - this can be helpful for a better, more objective choice.
First we should define what we mean by "analysing loop propagation" - Do we want to understand an actual cast by means of video analysis and similar tools or do we want to get a better general understanding of the physics behind it?
I'd like list principles, properties that we can use. I think Wikipedia is good enough for the definitions, also sometimes you can find nice video clips on Youtube about physics, so I'll link that. Let's start:
Limits of validity
https://en.wikipedia.org/wiki/Classical ... f_validity
-> We're talking only about classical mechanics and can ignore anything else, because of the dimensions and velocity of the fly line.
Newton's laws of motion
Euler's laws of motion
* these extend Newton's laws of motion for point masses to rigid
* NOTE the fly line is *not* a rigid body, so you need to be careful, when you're using terms like angular momentum.
I think we can describe a fly line already well with Newton's laws and concepts like mass, momentum, velocity, acceleration, force, tension, energy.
Euler's laws with concepts like angular momentum are maybe useable but the is not a rigid body (but can be approximated by a combination of multiple rigid bodies).
* This is a mathematical reformulation of classical mechanics, an energy based approach
* Daniel and I have used it for some computations