Forest Cover HeightOctober 14th 2021Question:We have a query about the Zh-height value assumed in the calculations. The manual notes that Zh varies between 5m and 30m, with a default value of 30m, ...
Overhanging faceOctober 14th 2021Question:I want to model rockfalls from a rockface above a road. But the rockface has an area which is overhanging. Does your software allow for overhanging rockfa...
Why use a hydrograph for debris flow modelling?Answer:There a several good reasons.Firstly, hazard mitigation experts are often interested in the flow behaviour only near the fan. Calculating the m...
Answer:Debris flowThe “best” constitutive model for debris flows is still a very open question in the scientific community. We recommend using the Voellmy model until a better model is found. Voell...
How is yield stress (cohesion) used in RAMMS::Debrisflow?Answer:Since Version 1.6.20 the basic Voellmy equation has been modified to include yield stress (cohesion), see equation below, where C is ...
How long does it take to perform a simulation?Answer The time required to simulate an avalanche or a debris flow is a function of the finite volume grid resolution and the size of the calculation d...
Does RAMMS take terrain curvature into account?Answer:Since Version 1.6.20, the normal force N now includes centrifugal forces arising from the terrain curvature. We use the method proposed by Fisc...
How is cohesion used in RAMMS::Avalanche?Answer:Since Version 1.6.20 the basic Voellmy equation has been modified to include cohesion, see equation below, where C is the cohesion of the flowing mat...
