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Water, Volume 11, Issue 5

May 2019 - 242 articles

Cover Story: A computational model for the fluid structure interaction of a buoyant rigid body immersed in a free surface flow is presented. In naval and ocean engineering and for wave energy harvesting, the correct prediction of the hydrodynamic loading exerted by the fluid on buoyant structures is crucial. To this aim, we developed and validated a tightly coupled algorithm that is able to deal with large structural displacement and impulsive acceleration typical of water entry problems. The tight coupling was achieved by utilizing a fixed-point iterative procedure. As most experimental data available in literature are limited to the first instants after the water impact, for larger hydrodynamic forces, we specifically designed a set of dedicated experiments on the water impact of a buoyant cylinder, to validate the proposed methodology in a more general framework. View this paper.
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Articles (242)

  • Article
  • Open Access
10 Citations
4,796 Views
17 Pages

A Greedy Algorithm for Optimal Sensor Placement to Estimate Salinity in Polder Networks

  • Boran Ekin Aydin,
  • Hugo Hagedooren,
  • Martine M. Rutten,
  • Joost Delsman,
  • Gualbert H. P. Oude Essink,
  • Nick van de Giesen and
  • Edo Abraham

27 May 2019

We present a systematic approach for salinity sensor placement in a polder network, where the objective is to estimate the unmeasured salinity levels in the main polder channels. We formulate this problem as optimization of the estimated salinity lev...

  • Article
  • Open Access
28 Citations
8,389 Views
13 Pages

27 May 2019

The use of global and regional climate models has been increasing in the past few decades, in order to analyze the future of natural resources and the socio-economic aspects of climate change. However, these climate model outputs can be quite biased,...

  • Article
  • Open Access
8 Citations
3,544 Views
17 Pages

27 May 2019

The limitations of water quality management and assessment methods in China can be ascertained by comparison with other countries. However, it is unreasonable to use a uniform standard to evaluate water quality throughout China because one standard c...

  • Article
  • Open Access
23 Citations
7,925 Views
18 Pages

27 May 2019

Continuous runoff needs to be estimated in ungauged catchments to interpret hydrological phenomena and manage water resources. Researchers have used various methods to estimate runoff in ungauged catchments, but few combined different methods to impr...

  • Article
  • Open Access
23 Citations
5,467 Views
15 Pages

Assessment of Agricultural Drought Considering the Hydrological Cycle and Crop Phenology in the Korean Peninsula

  • Chul-Hee Lim,
  • Seung Hee Kim,
  • Jong Ahn Chun,
  • Menas C. Kafatos and
  • Woo-Kyun Lee

27 May 2019

Hydrological changes attributable to global warming increase the severity and frequency of droughts, which in turn affect agriculture. Hence, we proposed the Standardized Agricultural Drought Index (SADI), which is a new drought index specialized for...

  • Editorial
  • Open Access
5 Citations
5,600 Views
9 Pages

27 May 2019

Sustainable Urban Water Management (SUWM) approaches highlighted in this special issue have the potential to contribute to the transformation of urban water systems. The aim of the transformation is to accommodate population and economic growth and a...

  • Article
  • Open Access
29 Citations
6,664 Views
34 Pages

An Assessment of Groundwater Contamination Risk with Radon Based on Clustering and Structural Models

  • Lisa Martins,
  • Alcides Pereira,
  • Alcino Oliveira,
  • António Fernandes,
  • Luís Filipe Sanches Fernandes and
  • Fernando António Leal Pacheco

27 May 2019

There is currently some controversy in the scientific community regarding the efficiency of the water–rock interaction process in the contamination of radon in groundwater. In this study, some difficulties were found in the sampling phase. Many...

  • Article
  • Open Access
4 Citations
6,979 Views
11 Pages

Does Activated Silver Reduce Recontamination Risks in the Reservoirs of Ceramic Water Filters?

  • Regula Meierhofer,
  • Pascal Rubli,
  • Jared Oremo and
  • Alloyce Odhiambo

27 May 2019

Efforts to provide safe water are challenged by recontamination and regrowth of pathogens in treated water during storage. This study evaluated the potential of metallic silver with a chemically etched surface to reduce recontamination risks during w...

  • Article
  • Open Access
23 Citations
5,238 Views
21 Pages

27 May 2019

The Jinsha River is the main source of sediment in the Yangtze River Basin. The variation of water discharge and sediment load not only affects the operation of the cascade reservoirs in the basin but also change the water and sediment conditions int...

  • Article
  • Open Access
4 Citations
3,989 Views
19 Pages

Application Research of an Efficient and Stable Boundary Processing Method for the SPH Method

  • Xing Huang,
  • Wu Chen,
  • Zhe Hu,
  • Xing Zheng,
  • Shanqin Jin and
  • Xiaoying Zhang

27 May 2019

The boundary truncation of the kernel function affects the numerical accuracy and calculation stability of the smooth particle hydrodynamics (SPH) method and has been one of the key research fields for this method. In this paper, an efficient and sta...

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Water - ISSN 2073-4441