Introduction
In this simulation you will determine the hydraulic conductivity using the steady state drawdown (cm) and flow rate (L/min). In the simulation drawdown is determined using a pressure transducer that was zeroed under static (prepumping) conditions. The flow rate is measured using a flow gauge.
Instructions
1. Click on the on-off button to turn on the pump. Click on the red controller to set the flow rate to 0.5 LPM and determine the drawdown.
2.If you haven’t already, open the Ellipsoidal Flow Steady State Model Analysis Excel Workbook. Determine the hydraulic conductivity using the Single Q and H analysis worksheet. Values of D and L are shown on the clipboard in the simulation.
3. Set the flow rate to 0.9 LPM and determine the drawdown. Then set the flow rate to 0.2 LPM and determine the drawdown (To lower the flow rate hold down the CTRL (Command with Mac) button while clicking on the red controller.).
4. Using the Multilple Q and H analysis worksheet determine the hydraulic conductivity using all three pairs of data. Be sure to check the chart! Do the points fall close to a straightline as theory would predict?