QI. A conical shaft is turning with an angular velocity of w-200 rad/sec in a rectangular bearing which is fixed. The gap between shaft and bearing is filled with a kind of oil (Newtonian fluid) having a dynamic viscosity of u-0.5 N.s/m?. a) Calculate the torque produced by the side gaps as the inner conical shaft rotates. b) Calculate the additional viscous torque produced by the flat bottom of the conical shaft. w=200 rad/s h=5 cm h=0.5 cm h=0.5 cm

Exercise 7-Opening and closing a boiler door 8. Calculating advancing and retracting timesel paads a) Calculate the cylinder's surface area ratio, advancing speed and advancing time. Characteristic data required for calculation: = 2.0 sq. cm = 1.2 sq. cm Piston surface area: AP Piston ring surface area: APR Stroke length: = 200 mm Pump delivery rate: = 2 1/min b Surface area ratio Advancing speed Advancing time

( computational fluid dynamics question) Question:  If the calculations lag behind the flow of fluid, what factor of the simulation gets affected? Circle Final answer or State it clearly

Question A2 Figure QA2 is a schematic view of a river flow down an infinite hill with a constant angle of 0. Assume the viscosity and density of water are μ and prespectively. Furthermore assume in this motion the depth of the river remains unchanged and pressure is constant. a) List all the assumptions that you make in order to simplify the conservation of mass and N-S equations. b) Derive and list the simplified equations. c) Find a general solution to the velocity distribution across the river depth and then by applying the appropriate boundary conditions find an expression for the velocity profile. d) Determine the depth of the river in terms of volume flow rate Q per unit width. River bed y h Water Ꮎ Figure QA2 g