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lect15 - Zoology 440 Biomechanics 2008 Lecture 15 Basic...

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Zoology 440 Biomechanics 2008 Lecture 15. Basic fluid dynamics: defining properties of fluids. •Where we have been and where we are going •The formal definition of a fluid •Viscosity and its determinants: temperature, concentration of dissolved or suspended solutes, even shear stress (non Newtonian characteristics) •The problem of nectar feeding •Continuity (conservation of mass) Solid and structural mechanics: stress and strain distributions, movements of bodies and their parts in response to muscle forces and gravity. Fluid dynamic issues underlie: Internal flows (blood, respiratory flow, liquid food…) External flows (swimming, flying, running in air and water) Wind and water forces on sessile creatures • Dispersal Transport of nutrients and heat to and from biological surfaces Definition: A fluid deforms continuously under an applied stress…. The continuum hypothesis will dominate our studies: density, temperature, momentum, energy … all vary continuously.
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