| 11. | Bernoulli's Equation ignores compressibility of the fluid, as well as the effects of gravity and viscous forces on the flow.
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| 12. | Turbulence kinetic energy is then transferred down the turbulence energy cascade, and is dissipated by viscous forces at the Kolmogorov scale.
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| 13. | :I think the term passive force refers to something like friction or viscous force, which only exist as resistance to motion.
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| 14. | The obvious problem in the above method is the neglection of viscous forces which contribute heavily in modes of motion like roll.
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| 15. | In observations of vortices in real fluids the strength of the vortices always decays gradually due to the dissipative effect of viscous forces.
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| 16. | A low Reynolds number ( " Re " < < 1 ) indicates that viscous forces are very strong compared to inertial forces.
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| 17. | Integration of the viscous force per unit area "'? "'over the sphere surface gives the frictional force " F d " according to Stokes'law.
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| 18. | Assuming also that the wave height is very small compared to the mean height ( ), we have ( without lateral viscous forces ):
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| 19. | On an aircraft wing the boundary layer is the part of the flow close to the wing, where viscous forces distort the surrounding non-viscous flow.
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| 20. | Instabilities in the flow are not present, i . e . perturbations to the flow are damped out by viscous forces, and the flow is steady.
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