Decision Support System for the Socio-Economic Development of the Northern Part of the Volga-Akhtuba Floodplain (Russia)

Isaeva, Inessa I.; Voronin, A. A.; Хоперсков, А. В.; Dubinko, Konstantin; Klikunova, Anna

doi:10.1007/978-3-030-29743-5_5

Cited by 6 publications

(9 citation statements)

References 14 publications

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“…Fig. 4 demonstrates the results of simulations of strong spring flooding of the Volga-Akhtuba interfluve, showing changes in the terrain structure due to sediment transport, which are consistent with the analysis of long-term observation series for VAF [31]. Fig.…”

Section: Parallel Implementation Of Numerical Modelsupporting

confidence: 82%

Application of Graphics Processing Units for Self-Consistent Modelling of Shallow Water Dynamics and Sediment Transport

Khrapov

Хоперсков

2020

Lobachevskii J Math

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In this paper, we describe a numerical algorithm for the self-consistent simulations of surface water and sediment dynamics. The method is based on the original Lagrangian-Eulerian CSPH-TVD approach for solving the Saint-Venant and Exner equations, taking into account the physical factors essential for the understanding of the shallow water and surface soil layer motions, including complex terrain structure and its evolution due to sediment transport. Additional Exner equation for sediment transport has been used for the numerical CSPH-TVD scheme stability criteria definition. By using OpenMP-CUDA and GPUDirect technologies for hybrid computing systems (supercomputers) with several graphic coprocessors (GPUs) interacting with each other via the PCI-E / NVLINK interface we also develop a parallel numerical algorithm for the CSPH-TVD method. The developed parallel version of the algorithm demonstrates high efficiency for various configurations of Nvidia Tesla CPU + GPU computing systems. In particular, maximal speed up is 1800 for a system with four C2070 GPUs compare to the serial version for the CPU. The calculation time on the GPU V100 (Volta architecture) is reduced by 95 times compared to the GPU C2070 (Fermi architecture).

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Section: Parallel Implementation Of Numerical Modelsupporting

confidence: 82%

Application of Graphics Processing Units for Self-Consistent Modelling of Shallow Water Dynamics and Sediment Transport

Khrapov

Хоперсков

2020

Lobachevskii J Math

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“…The model is based on shallow water equations [34][35][36]75] and has already been used to solve a wide range of problems related to modeling the hydrological regime as the Northern part of the Volga-Akhtuba Floodplain (NPVAF) and other river systems. This numerical model became the basis for the creation of flood cadastral maps [24], decision-making systems for the socio-economic development of floodplain territories [25], and the implementation expertise of various engineering projects [76].…”

Section: Hydrodynamic Model Of Floodingmentioning

confidence: 99%

“…Such water objects are the floodplains of large lowland rivers regulated by hydroelectric dams. Therefore, floodplains pose a serious danger to the life of the population during spring floods or heavy rainfall [15,[24][25][26][27]. The effects of flash floods in urban areas are more severe.…”

Section: Introductionmentioning

confidence: 99%

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The Problem of Effective Evacuation of the Population from Floodplains under Threat of Flooding: Algorithmic and Software Support with Shortage of Resources

et al. 2023

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Extreme flooding of the floodplains of large lowland rivers poses a danger to the population due to the vastness of the flooded areas. This requires the organization of safe evacuation in conditions of a shortage of temporary and transport resources due to significant differences in the moments of flooding of different spatial parts. We consider the case of a shortage of evacuation vehicles, in which the safe evacuation of the entire population to permanent evacuation points is impossible. Therefore, the evacuation is divided into two stages with the organization of temporary evacuation points on evacuation routes. Our goal is to develop a method for analyzing the minimum resource requirement for the safe evacuation of the population of floodplain territories based on a mathematical model of flood dynamics and minimizing the number of vehicles on a set of safe evacuation schedules. The core of the approach is a numerical hydrodynamic model in shallow water approximation. Modeling the hydrological regime of a real water body requires a multi-layer geoinformation model of the territory with layers of relief, channel structure, and social infrastructure. High-performance computing is performed on GPUs using CUDA. The optimization problem is a variant of the resource investment problem of scheduling theory with deadlines for completing work and is solved on the basis of a heuristic algorithm. We use the results of numerical simulation of floods for the Northern part of the Volga-Akhtuba floodplain to plot the dependence of the minimum number of vehicles that ensure the safe evacuation of the population. The minimum transport resources depend on the water discharge in the Volga river, the start of the evacuation, and the localization of temporary evacuation points. The developed algorithm constructs a set of safe evacuation schedules for the minimum allowable number of vehicles in various flood scenarios. The population evacuation schedules constructed for the Volga-Akhtuba floodplain can be used in practice for various vast river valleys.

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“…Mathematical modeling of the consequences of the implementation of various kinds of hydraulic engineering projects (dams, canals, pumping stations, sluices, water protection structures, etc.) is a necessary element of technical expertise at the design stage [1][2][3]. Geoinformation systems are the most convenient tool for accumulating data on the state of river systems for subsequent analysis of trends in their changes.…”

Section: Introductionmentioning

confidence: 99%

EcoGIS-Simulation Software for riverbed sediments modeling

Khrapov,

Agafonnikova,

Potaptseva

et al. 2023

E3S Web Conf.

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The paper describes the EcoGIS-Simulation software and hardware complex for numerical hydrological modeling of river systems. The computing core makes it possible to carry out a non-stationary self-consistent calculation of the dynamics of surface and groundwater, as well as the transfer of entrained and suspended sediments. The main attention is paid to the organization of geoinformation support for such calculations at the stages of preparation of initial data, processing of results and their visualization. EcoGIS-Simulation software is designed to simulate non-stationary self-consistent dynamics of surface and groundwater together with the transport of entrained and suspended sediments. The strong dependence of the nature of sediment transport on the particle size in the conditions of the Medveditsa River in the vicinity of the city of Mikhailovka (Volgograd Region, Russia) is shown.

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Decision Support System for the Socio-Economic Development of the Northern Part of the Volga-Akhtuba Floodplain (Russia)

Cited by 6 publications

References 14 publications

Application of Graphics Processing Units for Self-Consistent Modelling of Shallow Water Dynamics and Sediment Transport

Application of Graphics Processing Units for Self-Consistent Modelling of Shallow Water Dynamics and Sediment Transport

The Problem of Effective Evacuation of the Population from Floodplains under Threat of Flooding: Algorithmic and Software Support with Shortage of Resources

EcoGIS-Simulation Software for riverbed sediments modeling

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