Exercise 3.7.1 Water flows through a sand body that has been placed between two screens in the apparatus shown in figure 3.7.1. The water levels to the left and right in Figure E3.7.1 are kept at constant levels. The screens keep the sand in place , but allow water to pass. z1=30cm,z2=60cm,l=40cm, pl/pg=90cm,p2/pg=40cm, A=600cm^2.

The hydraulic conductivity K of the sand is 10m day^-1, the effective porosity is 0.4. Hydraulic conductivity of the material can be defined as the ability of the fluid to pass through the pores and fractured rocks(sciencedirect.com)

Darcy's Law is Q=KiA

A. Draw the direction of the water flow,

B. Determine the volume flux Q in the sand body.,(I know the answer, just not how to get it (0.24 m^3 day^-1), distance of flow 50cm )

C. Determine the travel time of a water particle that flows through the sand body.( should come to 1 hr 12 minutes)