Abstract
During recreational troll fishing, success usually depends on the ability to maintain the lure at the desired depth. When trolling with a heavy line, one whose inherent density sinks the lure, depth control is guesswork for most anglers. This study presents a method for predicting the trolling depth of heavy fishing lines. The model is developed based on the fluid mechanics of the line being towed through quiescent water and determines line depth for known line properties and trolling speed. Experiments are performed to validate the model and results are consistent with the model predictions. The model is employed to illustrate how trolling depth can be controlled during typical fishing situations.
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References
Dowling, A.P. (1988a) The dynamics of towed flexible cylinders Part 1. Neutrally buoyant elements.Journal of Fluid Mechanics,187, 507–532.
Dowling, A.P. (1988b) The dynamics of towed flexible cylinders Part 2. Negatively buoyant elements.Journal of Fluid Mechanics,187, 533–571.
Facchinetti, M.L., de Langre, E. & Biolley, F. (2002) Experiments on vortex-induced traveling waves along a cable. Proceedings of the Third Conference on Bluff Body Wakes and Vortex-Induced Vibrations (BBVIV3). pp. 215–217. Port Douglas, Australia.
Havstad, J. (1979) Sink rate of sinking lines.The Flyfisher, Fall, 35–42.
Paidoussis, M.P. (1987) Flow induced instabilities of cylindrical structures.Applied Mechanics Review. Transactions of ASME,40 (2), 163–175.
Triantafyllou, M.S. (1991) Dynamics of cables, towing cables, and mooring systems.Shock & Vibration Digest,23 (3), 3–8.
Tritton, D.J. (1959) Experiments on the flow past a circular cylinder at low Reynolds numbers.Journal of Fluid Mechanics,6, 547–567.
White, F.M. (1974)Viscous Fluid Flow. McGraw-Hill, New York, USA.
Wieselsberger, C. (1921) Neure festellungen über die gesetze des flüssigkeit- und luftwiderstands.Physikalische Zeitschrift,22, 321–328.
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Spolek, G. Sink depth of trolled fishing lines. Sports Eng 10, 165–171 (2007). https://doi.org/10.1007/BF02844188
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DOI: https://doi.org/10.1007/BF02844188