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v2 new feature - Pond Design Enhancements
A number of improvements have been made to the Pond design procedure.
- When the Pond window opens the Target outflow is arbitrarily set
at one half of the peak inflow. Before the design proceeds you are
prompted to either accept this value or enter a preferred Target
outflow.
- When using the ‘Rectangular Pond’ geometry option a Tool is made
available to estimate the aspect ratio (Length/Width) of the
equivalent rectangular area in terms of the measured surface area
and perimeter. The figure below shows this feature in use.
- Outflow Control options now include two additional choices:
- A Horizontal Orifice is one in which the discharge flows
vertically downward through a horizontal plate.
- A Pipe control is simply an outflow pipe that is long enough
that the normal depth of uniform flow occurs at the upstream end
just after the initial acceleration. The head H in the pond is
assumed to be equal to the specific energy at the upstream end
of the pipe, i.e.
- To improve on the accuracy with which the Stage – Discharge
curve is computed, steps have been taken to discourage the user
from specifying a weir crest elevation that falls between two
values of the set of stage elevations. The figure below shows a
warning message that is displayed if this occurs. In this
example the stage values were …108.0, 109.5, 121.0, 122.5…that
could have resulted in a maximum water level greater than the
weir crest producing zero flow over the weir.
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Design makes
the difference |
Latest Update:
v2.25 Rev473 |
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Malaysia |
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