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Informally, viscosity is the quantity that describes a fluid's resistance to flow. Formally, viscosity is the ratio of shearing stress to velocity gradient.
Physics : Properties of Matter - Solved Example Problems for Viscosity. A metal plate of area 2.5×10-4m2 is placed on a 0.25×10-3m thick layer of castor oil. If a force of 2.5 N is needed to move the plate with a velocity 3×10-2m s-1, calculate the coefficient of viscosity of castor oil.
We derive the general equation for all regimes laminar, transition and turbulent flow. A collection of exact solutions to the equations of viscous hydrodynamics is presented, along with one for non-Newtonian flow and one which uses the Boussinesq approximation to treat a problem in natural convection.
This is the first of two workbooks full of challenging physics problems designed to help you prepare for the Oxford Physics Aptitude Test (PAT). The two workbooks contain many questions of varying difficulty and subject matter, and the accompanying solutions manuals outline possible approaches to each question in detail.
Solution: (a) We would use Poiseuilles equation as this is not just a local blockage (it is the whole artery that has a reduced radius). (b) Lets look at the situation of a normal artery (ie higher radius lets call this 1) and a narrowed artery (with the deposits lets call this 2). The viscosity of the blood will be unchanged, length
The following sections present exact solutions of the equations of motion for several relatively simple problems in rectangular, cylindrical, and spherical coor- dinates.
5 cze 2012 · The principal aims of the present chapter are firstly to establish the Newtonian formulae which relate the components of stress in viscous fluids to gradients of u, secondly to use these formulae to establish a more general equation of motion for fluids than Euler's equation, and thirdly to discuss a variety of relatively simple problems in ...
