DETERMINATION OF COEFFICIENT OF DISCHARGE FOR AIR-INFLATED DAM USING PHYSICAL MODEL
Keywords:
Inflatable dam, discharge coefficient, weir, rubber damAbstract
In general the coefficient of discharge for various types of measuring structures constructed in an open channel can be found from a standard formula. These structures such as a broad-crested weir, sharpcrested weir and circular-crested weir have a constant shape under all overflow conditions; therefore the relationship between the head and discharge over the structures can be found. In the case of inflatable dams this relationship is more complex than traditional measuring structures because the dimensions of inflatable dams may be varied due to internal pressure, overflow head and downstream water head. In this study the coefficient of discharge for inflatable dams was determined from the experimental data under different overflow heads and internal pressures for an air inflated dam.
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