assignment 1 fluids 1 ahmedawad
DESCRIPTION
FLUID MECHANICS (I)Assignment 11- a Newtonian fluid u/v=sin(π/2) (y/δ) , If υ=4×〖10〗^(-4) m^2/s ,S.G=0.92 Calculate τ 1-\ on the plate (wall), 2-at y=δ/22- If the fluid are Newtonian, determine the magnitude and direction of shearing stress that act on the fixed walls assume the velocity distribution are linear. Also calculate force required to pull the plate if the wetted area 4 m2 3- if the wetted area 3 m2 Find the minimum Force F required to pull the plate and determine the respective value of y 4- A thin 20×20 cm2 flat is pulled at v=1 m/s horizontally as shown. The bottom plate moves 0.3 m/s in opposite direction. The dynamic viscosity of oil μ=0.027 Pa∙s. Assuming the velocity at each oil layer in linear and determine The location where the oil velocity is zero The force required to maintain the plat motion 5- Determine the torque required to rotate a 50 mm diameter vertical cylinder at constant angler speed ω=30 rad/s inside a fixed outer cylinder has a diameter 50.2 mm. the gap is filled with oil at 20℃ (μ=8×〖10〗^(-2) Pa∙s) the length of the inner cylinder is 200mmAssume linear velocity distribution in the gap What will be the percent change in the torque of oil temperature becomes 80℃ (μ=8×〖10〗^(-3) Pa∙s) 6- The plate shown slides downward over inclined wetted plane by oil μ=0.12Pa∙s of 0.5mm thickness Wetted area 4m2 Calculate velocity of plate 7- calculate the power lost in friction to overcome the viscosity of the bearing shownTRANSCRIPT
