The consequences of lava flowing downhill around and over topography and interacting with human-made constructions is modelled by considering the flow of a Newtonian fluid. Small obstacles can be overtopped by the flow, but topography of sufficient height will deflect the flow around it and form dry regions in the wake. Both numerical solutions and the results of laboratory experiments are discussed. We provide numerous pictures of flow patterns and evaluate the force they exert. The experimental results, focusing on flows past circular cylinders, are in good agreement with our numerical evaluations. Flows over depressions, which act to concentrate the flow, are also discussed.
|Publication status||Unpublished - 5 Nov 2020|
|Event||3rd Conference of the Arabian Journal of Geoosciences - Sousse, Tunisia|
Duration: 2 Nov 2020 → 5 Nov 2020
|Conference||3rd Conference of the Arabian Journal of Geoosciences|
|Period||2/11/20 → 5/11/20|