Fluid Mechanics Questions

• Which of the following is not concerned with the fluid-particle interaction?
• For Laminar flow through a packed bed, the pressure drop is proportional to (Vs is the superficial liquid velocity and Dp is the particle diameter)
• Shear stress in a fluid flowing in a round pipe
• Laminar flow of a Newtonion fluid ceases to exist, when the Reynolds number exceeds
• The terminal velocity of a particle moving through a fluid varies as dpn. What is the value of n' for Newton's law regime?
• The fluid in which the shearing stress within it is proportional to the velocity gradient across the sheared section, is called a __________ fluid.
• Dimension of absolute viscosity is
• The ratio of the depth of flow to the hydraulic radius for the most economical trapezoidal section, in open channel flow is
• Pick out the correct statement.
• Foot valves provided in pumps are __________ valves.