A fast, calibrated model for pyroclastic density currents kinematics and hazard

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• 作者：Tomaso Esposti Ongaro^a ; ^{tomaso.espostiongaro@ingv.it} ; Simone Orsucci^a ; ^b ; Fulvio Cornolti^b
• 关键词：Pyroclastic density currents ; Box model ; Multiphase flow ; Numerical simulation ; Volcanic hazard
• 刊名：Journal of Volcanology and Geothermal Research
• 出版年：2016
• 出版时间：15 November 2016
• 年：2016
• 卷：327
• 期：Complete
• 页码：257-272
• 全文大小：2218 K
• 卷排序：327

文摘

Turbulent pyroclastic density currents are simulated with 2D and integral (box) models. The box-model validity is explored in a wide range of particle concentrations and sizes. Box-model free parameters are calibrated by means of 2D numerical simulations. An energy-conoid approach is developed as a fast flow emulator for hazard assessment. The energy-conoid is preferable to the energy-cone but still has main limitations.