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3D numerical modeling of landslide-generated tsunamis around a conical island

Montagna, F.; Bellotti, G.; Risio, M. Di - In: Natural Hazards 58 (2011) 1, pp. 591-608

This paper presents numerical computations of tsunamis generated by landslides falling along the flank of a conical island. The model used is the fully three-dimensional commercial code FLOW-3D, based on the VOF technique for the treatment of the free surface. The model results are compared...

Persistent link: https://www.econbiz.de/10010846255

A Block-Based Theoretical Model Suited to Gravitational Sliding

Tinti, Stefano; Bortolucci, Elisabetta; Vannini, Cesare - In: Natural Hazards 16 (1997) 1, pp. 1-28

An original theoretical model has been devised to simulate mass flow over hill slopes due to gravitational sliding. The sliding mass is discretized into a sequence of contiguous blocks which are subjected to gravitational forces, to bottom friction and to surface resistance stresses that are...

Persistent link: https://www.econbiz.de/10010995594

Assessment of Discharge through a Dike Breach and Simulation of Flood Wave Propagation

Kamrath, Paul; Disse, Markus; Hammer, Matthias; … - In: Natural Hazards 38 (2006) 1, pp. 63-78

This paper presents a simple and fast method to calculate flow through a dike breach. The approach was based on two-dimensional numerical simulations of idealized dike breakages at straight river-sections. As a result, computation of discharge through a breach can be achieved by use of the new...

Persistent link: https://www.econbiz.de/10010995696

Numerical simulation of air–soil two-phase flow based on turbulence modeling

Huang, Yu; Zheng, Hu; Mao, Wuwei; Li, Guanghui; Ye, Bin - In: Natural Hazards 58 (2011) 1, pp. 311-323

prevention efforts. Computational fluid dynamics (CFD) is an applied technique commonly used in a range of fields including the … flowing soil in geotechnical engineering applications. The CFD method can effectively make up for the deficiency of normal … calculation methods in the analysis of soil flow and air blasts. This paper uses the FLUENT (version 6.3) CFD calculation software …

Persistent link: https://www.econbiz.de/10010995701

Debris flow hazard assessment with numerical simulation

Liu, Ko-Fei; Li, Hsin-Chi; Hsu, Yu-Charn - In: Natural Hazards 49 (2009) 1, pp. 137-161

Debris flow disasters are usually accompanied by serious loss of lives and properties. However, debris flows are also part of earth’s natural phenomenon, and so what is the reasonable budget to be spent on mitigation measures becomes an important issue for the budget allocation processes....

Persistent link: https://www.econbiz.de/10010996146

Potential Flank-Collapse of Soufrière Volcano, Guadeloupe, Lesser Antilles? Numerical Simulation and Hazards

Friant, Anne; Boudon, Georges; Komorowski, Jean-Christophe - In: Natural Hazards 39 (2006) 3, pp. 381-393

The past history of recurrent flank collapses of la Soufrière volcano of Guadeloupe, its structure, its well-developed hydrothermal system and the current activity constitute factors that could promote a future flank collapse, particularly in the case of a significant increase of activity, with...

Persistent link: https://www.econbiz.de/10010996408

Integrating Monte Carlo and hydrodynamic models for estimating extreme water levels by storm surge in Colombo, Sri Lanka

Xu, Sudong; Huang, Wenrui; Zhang, Guiping; Gao, Feng; … - In: Natural Hazards 71 (2014) 1, pp. 703-721

The prediction of high extremes in sustained water level is very important for coastal engineering design and planning. The recorded historical water level datasets in Colombo, Sri Lanka, are not long enough for the traditional frequency analysis in predicting extreme water levels, such as 50-,...

Persistent link: https://www.econbiz.de/10010996614

Property insurance against debris-flow disasters based on risk assessment and the principal–agent theory

Ding, Mingtao; Wei, Fangqiang; Hu, Kaiheng - In: Natural Hazards 60 (2012) 3, pp. 801-817

Dongchuan City is highly threatened by debris-flow disasters originating from Shengou gully, a typical debris-flow gully along Xiaojiang River in Yunnan Province (Kang et al. <CitationRef CitationID="CR20">2004</CitationRef>). Shengou gully is studied, and a hazard assessment with numerical simulation is developed using ArcGIS 9.2...</citationref>

Persistent link: https://www.econbiz.de/10010996617

Return period estimates of extreme sea level along the east coast of India from numerical simulations

Sindhu, B.; Unnikrishnan, A. - In: Natural Hazards 61 (2012) 3, pp. 1007-1028

Estimates of return periods of extreme sea level events along the coast are useful for impact assessment. In this study, a vertically integrated 2D model was developed for the simulation of storm surges in the Bay of Bengal. The bathymetry for the model was derived from an improved ETOPO-5 data...

Persistent link: https://www.econbiz.de/10010996633

Fine coal covering for preventing spontaneous combustion of coal pile

Yang, Yongliang; Li, Zenghua; Tang, Yibo; Liu, Zhen; … - In: Natural Hazards 74 (2014) 2, pp. 603-622

In order to investigate the effect of fine coal covering around the bottom of coal stockpile on spontaneous combustion prevention, a two-dimensional math model was established to numerically simulate the fine coal covering coal pile and a coal pile temperature-rising experimental system was...

Persistent link: https://www.econbiz.de/10010996664