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This web site is dedicated to fly casting simulations and intended for people interested in the mechanics of fly casting. It is created by me, Hans Ekander, Åhus, Sweden. Fly fishing and simulating reality are two of my passions that are merging together here.

Laguna Willmanco near Esquel in Patagonia has given unforgettable fly fishing memories and therefore given name to my company, Willmanco AB, and to this website.

The simulation model has been developed by me for over a decade and rests on well proven methods and extensive verification. Some features of this simulation model that are not (or only partly) found in other fly-casting simulation models, see References, are listed below:

· Hauling and feeding of line. This feature makes it possible to vary the line length as is done in practical fly fishing as well as in competitive casting.

· Line interaction with a water or a ground surface. This makes it possible to simulate roll casts and complete casts starting and ending with the line on either a water surface or a ground surface.

· Material damping. This feature increases modelling accuracy of the fly rod and models viscous behavior observed in fly lines.

· Reynolds number dependent air drag. This feature increases accuracy of air drag simulation especially for small diameters and low relative velocities between air and line/rod.

Acknowledgements:

· My friend Neil Koenig PhD started “it all” many years ago when he got me infected with his enthusiasm for fly-fishing. We share great memories from fly fishing in some truly beautiful corners of the world.

· Bruce Richards, SA product developer (retired) and FFI Master Casting Instructor has generously shared his extensive casting experience and sharp eyes helping in the developments towards simulating more realistic casts.

· Noel Perkins, Prof. Emeritus, Univ. of Mich. has generously shared experimental data from measured casts and supplied ideas for improvements contributing to the development of the simulation model.