TUFLOW 2D Cell Size Selection: Difference between revisions
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This Wiki page uses two test cases to discuss this topic. Quantitative results are presented demonstrating how and when resolution assumptions have a tangible impact on model results. TUFLOW HPC and it's GPU Module have been used for all simulations documented in the following sections. The computer used for the modelling has a NVIDIA GeForce GTX 1080 Ti GPU card.
= Test Case 1 - Rural Dam Break (United Kingdom)=
This test case has been sourced from the <u>[https://www.tuflow.com/Download/Publications/UK%20EA%202D%20Benchmarking%20Results.TUFLOW%20Products%202017-09.pdf UK Environment Agency 2D Hydraulic Model Benchmark Test dataset]</u>. It is referred to as Test 5 in the Environment Agency (EA) document. The EA designed this test to simulate flood wave propagation down a river valley following the failure of a dam. The valley DEM is ~0.8 km by ~17 km and the valley slopes downstream on a slope of ~0.01 in its upper region, easing to ~0.001 at lower elevations. The model uses a single manning's n value of 0.04 across the entire domain.
The model topography and EA reporting points are shown below. <br>
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