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Download Pocket Guide - FLO
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with Courant number reductions first, then assign the DEPTOL = 0.2 and WAVEMAX = -0.25 and review the TIME.OUT file. Also note the change in timesteps reported in SUMMARY.OUT. It may be necessary to make DEPTOL and WAVEMAX adjustments if the model is too slow. The result of following this procedure will be: A calibrated model for overland roughness values in which the discretized numerical system in both time and space will better simulate the movement of the floodwave. The floodwave speed will be bound by a reasonable limiting Froude number. The model will run fast without numerical surging or over steepening of the floodwave. 40 Guidelines
