Water at 20C in a D=10m, H=2m, above ground swimming pool is to be emptied by unplugging a 3-cm-diamater, 30-m-long horizontal plastic pipe attached to the bottom of the pool. Determine the initial rate of discharge of water through the pipe and the time it will take to fully empty the swimming pool assuming the entrance to the pipe is well-rounded with negligible loss. Use the initial discharge velocity to estimate the friction factor and use the factor for the time estimation.
I have solved for the initial discharge velocity of 4.428 L/s, but I am unsure how to use this to estimate the friction factor.
Water at 20C in a D=10m, H=2m, above ground swimming pool is to be emptied by...
Water at 20C in a D=10m H=2m aboveground swimming pool is to be emptied by unplugging a 3-cm-diamater, 30-m-long horizontal plastic pipe attached to the bottom of the pool. Determine the initial rate of discharge of water through the pipe and the time it will take to fully empty the swimming pool assuming the entrance to the pipe is well-rounded with negligible loss. Use the initial discharge velocity to estimate the friction factor and use the factor for the time...
Water is circulated from a large swimming pool, through a filter, and back to the pool. The power added to the water by the pump is 200 lb-ft/s. The flowrate (in ft/min) through the filter is most likely: Req. pump power = m-gehpumppug.Qhpump = y.Qehpump For obtaining the Darcy friction factor (1), use the following Colebrook equation. 1 eD -2.0log 2.51 3.7 * Revf + K2 exit = 1.0 KZ elbow = 1.5 KĽ valve = 6.0 Kz filter =...
Please solve a,b,c,d,e,f 1) A water fountain is to be installed at a remote location by attaching a cast iron pipe directly to a water main through which water is flowing. The entrance to the pipe is sharp-edged 15m (K-0.5), and the 15m long piping system involves three 90 bends without vanes (K1.1), a fully open gate valve (K.-0.2), and a fully open angle valve (K-5). If the diameter of the pipe is 2 em and the system is to...
.Emergency Coolant Injection from an Accumulator Tank (8 marks) Consider an accumulator tank with a cross sectional area of A,-10m, and a height of H-6m, initially filled with 5m of water as shown in the figure. The top of the tank is closed and filled with air at an initial pressure of P, 1,101 kPa At time -Os, the water starts to discharge from an opening at the bottom of the tank with an opening area of A2 0.001m2. The...
General Physics Problem 4: At a local swimming pool, the diving board is elevated h = 9.5 m above the pool's surface and overhangs the pool edge by L = 2 m. A diver runs horizontally along the diving board with a speed of vo = 4.8 m/s and then falls into the pool. Neglect air resistance. Use a coordinate system with the horizontal x-axis pointing in the direction of the diver's initial motion, and the vertical y-axis pointing up....
10 peles A 3-m-diameter tank is initially filled with water 2 m above the center of a sharp-edged 10 cm diameter orifice. The tank water surface is open to the other, and the orice drains to the atmosphere through a 100-m-long pipe. The initial discharge velocity is 4 m/s. The friction coefficient of the can be when to be 0.015 and the effect of the energy correction the factor can be neglected. Determine (a) the initial velocity from the tank...
1. Atall cylindrical tank, held above ground on stilts, is partially filled with water. (See top figure). The tank has a diameter, D. At time equal to zero, a hole of diameter d is poked in the bottom of the tank, where d<< D. Let z-0 correspond to the bottom of the tank. The initial fluid height is za. Had Use Bernoulli equation to assess the velocity of the fluid as it leaves the bottom of the tank as a...
A student throws a water balloon with speed vo from a height h = 1.52 m at an angle θ=39° above the horizontal toward a target on the ground. The target is located a horizontal distance d = 7.5 m from the student's feet. Assume that the balloon moves without air resistance. Use a Cartesian coordinate system with the origin at the balloon's initial position. Part (a) what is the position vector, Rtarget that originates from the balloon's original position and...