Biomechanics of Swimming (Forces (Drag, Thrust, Buoyancy, Weight), Form…
Biomechanics of Swimming
Goal is to eliminate flow separation and minimize total drag Fd
Reduces drag by reducing F.d.pressure at the cost of increasing wetted surface area and Fdfriction
Friction and Pressure Drag
Fully submerged body, fluid dynamic forces are comprised of pressure and friction effects.
Resistance due to frictional drag is relatively small.
Wave drag is dependent on the ratio of speed to the length of the body
Balance and Equalibrium
Centre of gravity:
Centre of buoyancy
Water is 830x denser and 70x more viscous than water
Body shape and orientation
Cross sectional area
Fpressure = 1/2 Cp.p.A.V^2