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50ft oh casts, comparison incl. and excl. fly

Purpose

The purpose of this comparison is to show the impact of the fly.

The comparison is made between two simulations:

· The 50ft oh ref. cast with a fly included.

· “50ft no fly” simulated without a fly at the end of the leader.

Input, casting stroke

The casting stroke is identical for both simulations.

Input, equipment

The equipment is identical for both simulations with the only exception being the presence of the fly, see the 50ft oh ref. cast.

Output, animation

Click on the graph below to start animation.

Comment, animation:

The differences in results between the two cases are small except in the leader region.

Output, graphs

Differences in rod tip paths and results versus time are limited between the two simulations and are therefore not presented here.

Output, energies and work

Differences between the two simulations are shown below for dissipated work from leader and fly.

Notes:

· With the fly included the dissipation by air drag from the fly is about two times the dissipation from the leader.

· Without the fly the dissipation by air drag from the fly is, of course, zero. However, the dissipation by air drag from the leader is more than twice the air drag from the leader if the fly is included. The high dissipation by air drag from the leader in the simulation without a fly is due to higher normal speed between leader and air.

· The work dissipated through material damping is significantly increased if the fly is removed. This is due to excessive wiggling of the leader.