List of top Biomechanics Questions on Biofluid mechanics asked in GATE BM

There is a steady laminar blood flow in a tapered cylindrical vessel of circular cross-section, as shown in the figure below. Two cross-sections, labeled A and B in the figure, have radii \(0.5\) centimeter (cm) and \(0.45\) cm, respectively. If the average flow speed of the blood at cross-section A is \(1\) cm/second, the average flow speed at cross-section B is cm/second. (Round off to one decimal place).

Assume blood to be an incompressible fluid.

The diameter of a renal artery lumen in humans is 5 mm. If the mean velocity of the blood flowing in the renal artery is 40 cm/s, the density of blood (ρ) is 1060 kg/m³, and the viscosity of blood (μ) is 3 cP, the Reynolds number for the blood flowing in the renal artery is \(\underline{\hspace{2cm}}\). (rounded off to the nearest integer)

If we consider blood as a suspension of RBCs in a Newtonian fluid, the shear forces experienced by the RBCs during blood flow would