AWWA JAW36163

Many raw-water intakes in the Great Lakes are threatened by infestations of zebra mussels. Hydraulic testing and visual inspection of the intakes tend to be time-consuming and costly. The authors introduce an index (the damping ratio) that can be simply and inexpensively used to monitor the conditions of water intakes by signaling a change in flow resistance. The authors calculated some damping ratios and compared them with hydraulic data from drawdown tests. The results show that the damping ratio index has a direct relationship with the friction coefficient of the intake. Includes 5 references, table, figures.

Product Details

Edition:

Vol. 86 - No. 5

Published:

05/01/1994

Number of Pages:

5

File Size:

1 file , 14 MB