Where does the maximum velocity arise in a laminar flow in a Pipe? A. At r=R (the pipe wall) B. At r=0 (the pipe centreline) C. At r=R/4 D. At r= R/2 (halfway between the pipe centreline and wall)

For a fully developed laminar flow of water (dynamic viscosity 0.001 Pa-s) through a pipe of radius 5 cm. the axial pressure gradient is —10 Pa/m. The magnitude or axial velocity (in m/s) at a radial location of 0.2 cm is::

For a laminar flow of a film down an inclined plane, which of the following statements is accurate? A. The velocity is maximum at the mid-section of the film B. The shear stress is maximum at the surface of the solid plane C. The velocity is maximum at the solid surface of the inclined plane D. The shear stress is maximum at the free surface E. The velocity increases as you travel down along the plane.

What is the velocity of flow in a 65mm diameter pipe that delivers 3 litres of water persecond?

4. The speed of blood flow in an artery is given by Poiseuille’s law. The law says that blood flow is fastest in thecenter of the artery and slower at the edges. We can express this asS(r) =C(R2−r2).In this equationRis the fixed radius of the artery andSis the blood flow speed at a distancerfrom the centerof the artery. In a typical human aortaR= 1.4 centimeters and the peak blood flow velocity is 90 centimetersper second.(a) Calculate the constantC.1

As shown in the diagram, brine of specific gravity draining from the bottom of the large tank through a 100 mm pipe, the drain pipe ends at a point 20m below the surface of the brine in the tank. Calculate the velocity of flow along the streamline at the point of discharge from the pipe. a.20 m/sb.14 m/sc.19 m/sd.19.8 m/s