Swimming fish stick to same Strouhal number
نویسندگان
چکیده
منابع مشابه
How body torque and Strouhal number change with swimming speed and developmental stage in larval zebrafish.
Small undulatory swimmers such as larval zebrafish experience both inertial and viscous forces, the relative importance of which is indicated by the Reynolds number (Re). Re is proportional to swimming speed (vswim) and body length; faster swimming reduces the relative effect of viscous forces. Compared with adults, larval fish experience relatively high (mainly viscous) drag during cyclic swim...
متن کاملStrouhal numbers and optimization of swimming by odontocete cetaceans.
Swimming efficiencies of fish and cetaceans have been related to a certain synchrony between stroke cycle frequency, peak-to-peak tail/fluke amplitude and mean swimming speed. These kinematic parameters form a non-dimensional wake parameter, referred to as a Strouhal number, which for the range between 0.20 and 0.40 has been associated with enhanced swimming efficiency for fish and cetaceans. Y...
متن کاملStrouhal-Reynolds number relationship for vortex streets.
A rationale for the empirically observed Strouhal-Reynolds number relation for vortex shedding in the wake of a cylinder is provided. This rationale derives from a mechanism of vortex formation observed in numerical simulations of two-dimensional vortex shedding coupled with an order of magnitude estimate of the terms in the vorticity transport equation based on this mechanism.
متن کاملSupplementary Material: How body torque and Strouhal number change with swimming speed and developmental stage in larval zebrafish
cdynp,i; cfric,i constants used to estimate the external torque per unit length on the body due to dynamic pressure and skin friction CoM centre of mass of the body; the centre of mass of a body segment is indicated as the segmental CoM. dpf days post fertilization Ekin,body total kinetic energy of the body ML2T−2 Ekin,int ‘internal’ kinetic energy of the body ML2T−2 Etr,CoM kinetic energy due ...
متن کاملEditorial: Physiological Adaptations to Swimming in Fish
Swimming is an integral part of the life history of many fish species as is intimately linked with their ability to express feeding and predator avoidance behaviors, habitat selection and environmental preferences, social and reproductive behaviors as well as migratory behaviors (Videler, 1993; Palstra and Planas, 2011). Therefore, swimming is an important determinant factor of fitness in a tru...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Experimental Biology
سال: 2014
ISSN: 1477-9145,0022-0949
DOI: 10.1242/jeb.109702