Experimental data of dry and saturated granular flows of increasing source volume

Experimental results of granular flows in a large laboratory flume. Here we present the results of dry and initially fluid saturated or “wet” experimental flows in a large laboratory flume for five source volumes of 0.2 to 1.0 cubic metre. High-speed video was used to record particle behaviour at the grain scale. LiDAR scanning was completed on the final deposits. This dataset provides valuable test scenarios to explore the fundamental mechanisms through which the presence of a pore fluid increases flow mobility by first constraining the frictional properties of the material (dry experiments), permitting an independent evaluation of the implementation of interstitial fluid effects in numerical runout models (wet experiments).