(Solved): number 1 and 4 please sketch it The loss coefficient (KL) of a sudden expanding p ...

number 1 and 4 please sketch it

The loss coefficient $\left(K_L\right)$ of a sudden expanding pipe (stepped pipe, reservoir, etc.) is affected by the change in area as follows: $K_L={\left(1-\frac{A_{\text{small }}}{A_{\text{large }}}\right)}^2$ It is known that a pipe with diameter $5\mathrm{cm}$ is connected by a cube acted as reservoir. Determine the cross-section area so that the reservoir will have $K_L$ of close to 1 . Draw the graph to correlate between the side length of the cube and the $K_L$ of the connection. Discuss the finding. Hints: 1. Draw the connecting system between pipe and reservoir. 2. Determine the area of pipe and area of reservoir as the function of $s$. 3. Calculate the loss coefficient starting with $s=0$. 4. Increase the value of $s$ step-by-step, draw in a graph. 5. Determine at which point the loss coefficient is close to 1 . 6. Discuss the finding.