Content deleted Content added
|
|
|
| 250m (820ft) || 300 || 7 || No
|}
Since simulation time is not a limiting factor in this case selection of cell size only needs to consider the result accuracy. andWhat is appropriate in terms of accuracy is influenced by the numberintended use of simulationsthe neededmodel. For example, if lot scale assessment of inundation structural damage risk is required, selection of the 10m cell size may be appropriate. Alternatively, if the model is only intended to inform broad-scale risk, the 50m or 100m cell size may be sufficient.
* What is appropriate in terms of accuracy is influenced by the intended use of the model. For example, if lot scale assessment of inundation structural damage risk is required, selection of the 10m cell size may be appropriate. Alternatively, if the model is only intended to inform broad-scale risk, the 50m or 100m cell size may be sufficient.
* Consideration of boundary condition uncertainty is becoming a common trend worldwide. If a deterministic single event approach is adopted, longer model simulation times will have little impact on the overall project timeline and will be acceptable (eg. 10m model). Conversely if a probabilistic Monte Carlo assessment approach is necessary to focus on quantifying the uncertainty associated with the boundary condition inputs, 100s to 1,000s of model simulations may be necessary. In this situation quick model run time is essential and a slightly larger cell size may be preferred (eg. 50m or 100m).
= Test Case 2 - Urbanised Catchment =
|