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This site is created by me, Hans Ekander, Åhus, Sweden. Fly-fishing and simulating reality are two of my passions merged 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 site.

The simulation model used here, has been developed by me during 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.

· Interaction with a water surface. This feature makes it possible to simulate roll casts and complete casts starting with the line on the water surface and ending with the line having landed on the water.

· Material damping. This feature increases modelling accuracy of the fly rod and models “memory” 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 fishing 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 high quality experimental data from measured casts and supplied ideas for improvements contributing to the developments of the simulation model.