![]() ![]() The flow rates in both models (with and without considering tree trunks in the channel) were mostly below 2 m/s. The small size of computational cells causes an extension of computational time, in our case modelling an event, real- time lasting 6 hours and in which the peak of the flow rises to 100 l/s, needs 52 hours. For a shallow stream in a torrential river bed the value of Manning rough- ness coefficient 0.05 was used. DTM, resampled to cell size of 10 cm was used, which allows con- sidering the tree trunks, as part geometry torrential channel. Figure 8 shows the results of the flow rate modelling using hydraulic model Flo-2D. cartographic presentations have been created for many purposes, to picture the situation for better general overview of test area (figures 6), for easier recognition of specific forms (figures 7) and, primarily, for pre- senting results of hydraulic analyses. ![]()
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