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On Thu, 29 Mar 2007 19:33:56 +0200, Vadim Pavlov wrote
> Apologies for the cross-posting.
> 
> Dear all,
> 
> On behalf of my colleagues I am pleased to inform you of the new 
> article in Deep Sea Research II:
>   
> “A new approach to tag design in dolphin telemetry: computer 
> simulations to minimize deleterious effects”
> 
> Abstract
> Remote-sensors and transmitters are powerful devices for studying 
> cetaceans at sea. However, despite substantial progress in 
> microelectronics and miniaturisation of systems, dolphin tags are 
> imperfectly designed; additional drag from tags increases swim costs,
>  compromises swimming capacity and manoeuvrability, and leads to 
> extra loads on the animal’s tissue. We propose a new approach 
> to tag design, elaborating basic principles and incorporating design 
> stages to minimise device effects by using computer-aided design. 
> Initially, the operational conditions of the device are defined by 
> quantifying the shape, hydrodynamics and range of the natural 
> deformation of the dolphin body at the tag attachment site (such as 
> close to the dorsal fin). Then, parametric models of both of the 
> dorsal fin and a tag are created using the derived data. The link 
> between parameters of the fin and a tag model allows redesign of tag 
> models according to expected changes of fin geometry (difference in 
> fin shape related with species, sex, and age peculiarities,
>  simulation of the bend of the fin during manoeuvres). A final 
> virtual modelling stage uses iterative improvement of a tag model in 
> a computer fluid dynamics (CFD) environment to enhance tag 
> performance. This new method is considered as a suitable tool of tag 
> design before creation of the physical model of a tag and testing 
> with conventional wind/water tunnel technique. Ultimately, tag 
> materials are selected to conform to the conditions identified by 
> the modelling process and thus help create a physical model of a tag,
>  which should minimise its impact on the animal carrier and thus 
> increase the reliability and quality of the data obtained.
> 
> Keywords: Tag; Marine mammals; Modelling; Drag; Hydrodynamics
> 
> pdf of the article is available online via the following DOI link: 
> http://dx.doi.org/10.1016/j.dsr2.2006.11.010 or by email request to 
> [log in to unmask]
> 
> Best regards,
> 
> Vadim Pavlov	
> Crimean State Medical University
> Lenin blvd 5/7
> 95006 Simferopol
> Ukraine
> 
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