Section: Fluid Mechanics | Type: NAT | Marks: 2
In a capillary tube of radius R = 0.25 mm, a fully developed laminar velocity profile is defined as, 2 2 2 1 4 R dp r u dx R μ = − − . In this expression, dp dx − =1 MPa/m, μ is the dynamic viscosity of the fluid, and r is the radial position from the centerline of the tube. If the flow rate through the tube is 1000 mm3/s, the viscosity of the fluid, in Pa-s, is ______________.
Answer: 0.001 to 0.002