Danaide (hydrology)

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In hydrology, a danaide is a device for measuring the flow rate of water currents. Water is passed through a bucket that has a standardized hole in the bottom. With steady flow conditions, a constant water level develops, which is proportional to the flow. With the level in the bucket, the flow rate can be determined using a calibration curve.

The device was introduced by Brauer in 1892 and is suitable for measuring flow rates of up to 60 l / min. The measurement uncertainty is very low at ± 0.2%.

The name refers to the myth of the Danaides , the fifty daughters of Danaos , the punishment for the murder of their husbands in Tartarus had to draw forever water into a leaky vessel.

literature

  • Gerd Morgenschweis: Hydrometry. Theory and practice of flow measurement in open channels. Springer, Berlin 2010, ISBN 978-3-642-05389-4 , pp. 115ff