TUFLOW 1D Channels and Hydraulic Structures: Difference between revisions
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== How can trash screens be represented? ==
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Trash screens can be represented by applying additional head losses and blockage effects in accordance with the Queensland Urban Drainage Manual (QUDM) guidance. The approach depends on the location of the screen and the degree of blockage.
Where the screen is attached directly to the culvert inlet or outlet, the losses are applied to the culvert itself. For screens located upstream or downstream of the culvert, a short zero length channel is used to represent the screen. In both cases, the net flow area should be reduced to account for the bars and any debris blockage, either by adjusting the flow area directly or by using the %blockage option.
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