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October 18, 2008
Conclusions
The Unfortunately, the model empties out much quicker than the estimated 4 hours and 9 minutes. This was likely because of a mistake in calculating the flow rate initially. However, because the model was never significantly altered between runs of the experiment, we expect that the flow rate remain constant (despite the fact that it was not what was calculated). And because the model takes longer in each subsequent run to empty, it can be inferred that the flow of water through the model becomes increasingly restricted over each run. It was hypothesized that the sudden spike in each run that signifies the emptying of the stock tank due to erroneous noise that occurs with the sudden end of flow. It is noted that on October 17th, 2008 the constant head tank increases gradually as opposed to rapidly. It is possible that this is due to restricted flow higher in the line (the exit of the stock tank, for example). The model finally clogs on October 18, 2008. When clogged, the stock tank and constant head tank are still full with solution, which indicates that the closure is in the line below the constant head tank. We believe that it is clogged at the t-joint, because of the parts within the t-joint, however the closure may also be at the valve. The closure may be at the valve because of the fact that it isn't fully opened.
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