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Journal articles on the topic 'Software Feflow'

Author: Grafiati

Published: 14 March 2023

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1

Becker, Bernhard P., and Holger Schüttrumpf. "An OpenMI module for the groundwater flow simulation programme Feflow." Journal of Hydroinformatics 13, no. 1 (2010): 1–12. http://dx.doi.org/10.2166/hydro.2010.039.

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The OpenMI standard defines an interface that allows time-dependent models to exchange data at runtime. The migration of a flow simulation programme to OpenMI compliance usually requires changes in the source code or even a reorganisation of the programme sequence. Users of commercial flow simulation programmes depend on the software producer if they want to couple their models according to the OpenMI standard. We describe how we made the groundwater flow simulation programme Feflow OpenMI compliant without changing the source code: an OpenMI-compliant control application communicates with Fef

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2

Karmakar, Shyamal, Alexandru Tatomir, Sandra Oehlmann, Markus Giese, and Martin Sauter. "Numerical Benchmark Studies on Flow and Solute Transport in Geological Reservoirs." Water 14, no. 8 (2022): 1310. http://dx.doi.org/10.3390/w14081310.

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Predicting and characterising groundwater flow and solute transport in engineering and hydrogeological applications, such as dimensioning tracer experiments, rely primarily on numerical modelling techniques. During software selection for numerical modelling, the accuracy of the results, financial costs of the simulation software, and computational resources should be considered. This study evaluates numerical modelling approaches and outlines the advantages and disadvantages of several simulators in terms of predictability, temporal control, and computational efficiency conducted in a single u

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3

Leiter, Augustin. "A Software Tool Developed for Simplified Numerical Modeling of Thermal Conduction around Distorted Geothermal Boreholes." Advanced Engineering Forum 21 (March 2017): 529–34. http://dx.doi.org/10.4028/www.scientific.net/aef.21.529.

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The geometric characteristics of multiple geothermal boreholes organized in a geothermal system affect its thermal efficiency. The location of boreholes and their verticality and straightness is often distorted during drilling process. This distortion then degrades thermal properties of such a system. To study this phenomenon a specialized software tool was developed for numerical modeling based on a simplified mathematical model. This paper describes software tool briefly and presents some initial numerical models of basic borehole arrangements solved by this tool. Paper also contains a verif

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4

Iwanek, Małgorzata, and Paweł Suchorab. "The assessment of water loss from a damaged distribution pipe using the FEFLOW software." ITM Web of Conferences 15 (2017): 03006. http://dx.doi.org/10.1051/itmconf/20171503006.

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5

Zhao, Chengyi, Yuchao Wang, Xi Chen, and Baoguo Li. "Simulation of the effects of groundwater level on vegetation change by combining FEFLOW software." Ecological Modelling 187, no. 2-3 (2005): 341–51. http://dx.doi.org/10.1016/j.ecolmodel.2004.10.019.

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6

Ren, Jian Min, Yang Yang, and Xing Wei Hu. "Application of GIS and FEFLOW in Forecasting Groundwater Flow Field of Minqin Basin." Advanced Materials Research 368-373 (October 2011): 2128–31. http://dx.doi.org/10.4028/www.scientific.net/amr.368-373.2128.

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Conditions were considered of complex geology and the hydrogeology of Minqin, the 3d numerical simulation model of groundwater system was built by FEFLOW software in the study area. Author found that hydrogeologic parameters which have been debugged many times corresponded with the hydrogeology prospecting results well. Verification results show that the model has better simulation effect and higher reliability in checking the model. Facts show that prediction of groundwater flow field has high reliability in the study area.

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Anbergen, Hauke, Wolfram Rühaak, Jens Frank, and Ingo Sass. "Numerical simulation of a freeze–thaw testing procedure for borehole heat exchanger grouts." Canadian Geotechnical Journal 52, no. 8 (2015): 1087–100. http://dx.doi.org/10.1139/cgj-2014-0177.

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The amount of research conducted on geothermal energy as a source for heating and cooling demands of buildings, as well as for electrical energy production, has increased substantially in the past decades. The simulation of freezing and thawing is important for geothermal applications involving ground coupled heat pumps. One area of research is the development of grout cements for borehole heat exchangers (BHE). In many cases, BHEs are operated at temperatures below 0° C due to manifold reasons. Hence, the simulation of freezing and thawing cycles (FTC) is important for such geothermal applica

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Pan, Jun, Yang Liu, and Te Leng. "Analysis of Influence of Estuary Artificial Wetland on Water Environmental Capacity." Advanced Materials Research 726-731 (August 2013): 1441–44. http://dx.doi.org/10.4028/www.scientific.net/amr.726-731.1441.

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The model of artificial wetland is designed using the data of hydrology and water quality, to analyze influence of estuary wetland on water environmental capacity in Yangguan-river. The change of concentration of COD and TN is simulated by inputting the model to FEFLOW software. Environmental capacity is calculated on condition that sewage plant is discharging upstream. The result shows that, water quality and environmental capacity are improved by wetland. Environmental capacity of COD can meet the water quality target, but TN cant meet the target because of the high background concentration.

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9

Kumar Sahu, Suvendu, Kamalesh Mondal, Gobinath M, and D. C.Jhariya. "Application of groundwater transport modelling in groundwater development and management: a review." International Journal of Advanced Geosciences 7, no. 1 (2019): 47. http://dx.doi.org/10.14419/ijag.v7i1.25905.

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Groundwater is one of the very sensible natural resource and to protect its quality there is need of proper management system. Groundwater modelling is very advance method for the simulation, forecasting and set remediation strategy to protect the ground-water system, it is an emerging field in groundwater study. So many scientists and researchers are working on this to prepare a groundwater management strategy and to improve the efficiency of the model. For solving the different groundwater related issues, it is important to select proper model. For the accuracy of the model result, it needs

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10

Bian, Kai, Shi Lei Chen, Xue Yuan Li, and Ying Wang Zhao. "Numerical Simulation of Seepage Field in Aquifer under the Coal Seam." Advanced Materials Research 955-959 (June 2014): 3120–24. http://dx.doi.org/10.4028/www.scientific.net/amr.955-959.3120.

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In order to figure out seepage field in aquifer under the coal seam, the geology and hydrogeology conditions systematically of study area were analyzed, hydrogeological conceptual model was generalized, mathematical model was built, seepage field of the Taiyuan limestone aquifer was simulated with software Feflow. Simulation results show that hydrogeological parameters of Taiyuan limestone aquifer change greatly in different partitions. The model also indicates the heterogeneity of karst fissure of Taiyuan limestone aquifer. The drainage quantity is from the Ordovician limestone aquifer beside

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11

Li, Mingwei, Zhifang Zhou, Hailong Huang, and Jianxin Liao. "Estimation of Hydraulic Diffusivity of a Confined Limestone Aquifer at the Xiluodu Dam." Geofluids 2022 (September 5, 2022): 1–10. http://dx.doi.org/10.1155/2022/8732415.

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Hydraulic diffusivity is a fundamental parameter in studying groundwater flow. An analytical solution for groundwater flow within a finite-length one-dimensional aquifer has been introduced. This analytical solution simplifies the river water level (RWL) by a piecewise linear function, accurately describing the arbitrary variation pattern. An inversion method for hydraulic diffusivity has been provided based on the analytical solution. Then, the method was employed to estimate the hydraulic diffusivity of a limestone aquifer in the Xiluodu reservoir and was verified by the FEFLOW software. The

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12

Pasanen, A. H., and J. S. Okkonen. "3D geological models to groundwater flow models: data integration between GSI3D and groundwater flow modelling software GMS and FeFlow®." Geological Society, London, Special Publications 408, no. 1 (2016): 71–87. http://dx.doi.org/10.1144/sp408.15.

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13

Cheng, Yu Fei, Yuan Hong Li, Xiang Quan Hu, Jun De Wang, and Shu Chao Lu. "The Study of Groundwater Modeling of Plain Area in Shiyang River Basin - I Groundwater System Conceptual Model Construction." Advanced Materials Research 937 (May 2014): 632–38. http://dx.doi.org/10.4028/www.scientific.net/amr.937.632.

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In order to construct the groundwater numerical simulation model, the study area was determined on the basis of the geological and hydrogeological conditions. Taking Feflow as operating platform, combining GIS with Surfer software, a study area of the structure of three-dimensional aquifer model was established, realizing the 3D visualization of a large area of the complex geological content. Combined with the hydrogeological conditions, three-dimensional geological structure of the model further generalization. The result showed that the aquifer of the vertical was generalized into the unconf

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14

Liu, Yi, and Xiao Min Mao. "Influence of Boundary Conditions on Modeling Seawater Intrusion into Coastal Aquifer." Advanced Materials Research 250-253 (May 2011): 3074–78. http://dx.doi.org/10.4028/www.scientific.net/amr.250-253.3074.

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Numerical simulation is an essential tool for investigation of seawater intrusion in coastal aquifer. For most groundwater modeling software, boundary condition along the beach is required. But it was normally assumed due to the uncertainty in the seawater – freshwater interface. Using FEFLOW, a groundwater simulation software based on finite element method, we investigated the intrusion scope and the exiting point of groundwater outflow under various boundary conditions. Seven cases were designed, among which three cases with boundary conditions of a freshwater layer over seawater, three case

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15

Widomski, Marcin K., Iwona Pawelec, Ajay Kumar, and Grzegorz Łagód. "Numerical modelling of water percolation through mortar-based connection of concrete pipes." MATEC Web of Conferences 252 (2019): 05014. http://dx.doi.org/10.1051/matecconf/201925205014.

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This paper presents an attempt to numerical modelling of water seepage through the connection of two concrete pipes, commonly used in the past in construction of sanitary and stormwater sewerage systems, sealed by three types of different cement-based mortars. The 2D numerical calculations were made by means of the commercial modelling software FEFLOW, WASY-DHI, especially popular in soil and environmental science. The required input data for the developed numerical model, including saturated hydraulic conductivity and retention characteristics of tested mortars, were obtained during the condu

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16

Rastorguev, I. A., L. N. Mukhina, and D. A. Ermakova. "Software DHI Feflow and Processing Modflow in Solving Groundwater Flow Problems for HPP Projects Design and Reconstruction in a Complex Geological and Hydrogeological Environment." Power Technology and Engineering 55, no. 2 (2021): 172–78. http://dx.doi.org/10.1007/s10749-021-01337-9.

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17

Iwanek, Małgorzata, Paweł Suchorab, and Zbigniew Suchorab. "FEM simulation of water lost through damaged household water connection." MATEC Web of Conferences 252 (2019): 05008. http://dx.doi.org/10.1051/matecconf/201925205008.

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The problem of water supply pipe’s failures is one of the most onerous for water distribution network’s (WDN) operators. Multiple actions undertaken to detect, minimise and eliminate the phenomenon of water losses are mainly focused on financial aspect of lost water. However, at some point, the further minimisation of water losses is unprofitable due to reaching the economic level of water leakages. In WDNs failures analysis the biggest emphasis is put on damages of main pipes and distribution pipes, while failures of household water connections are often neglected. That is because the most ty

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18

Pandian, Rajaveni Sundara, Indu Sumadevi Nair, and Elango Lakshmanan. "Finite element modelling of a heavily exploited coastal aquifer for assessing the response of groundwater level to the changes in pumping and rainfall variation due to climate change." Hydrology Research 47, no. 1 (2015): 42–60. http://dx.doi.org/10.2166/nh.2015.211.

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Coastal aquifers are always under threat of seawater intrusion due to over-extraction of groundwater. The objective here is to assess aquifer response to variation in pumping and rainfall recharge due to projected climate change by groundwater modelling in a heavily exploited aquifer. Finite element groundwater flow modelling was carried out from March 1988 to December 2030 using FEFLOW software. Steady state calibration was done to match observed and simulated groundwater head by varying aquifer parameters within the allowable range. Transient state calibration was carried out during the peri

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19

Cappellari, Davide, Leonardo Piccinini, Alessandro Pontin, and Paolo Fabbri. "Sustainability of an Open-Loop GWHP System in an Italian Alpine Valley." Sustainability 15, no. 1 (2022): 270. http://dx.doi.org/10.3390/su15010270.

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Shallow geothermal systems (SGSs) for building climatization represent an advantageous alternative to traditional air-conditioning systems, resulting in economic and environmental benefits. Installation of these systems requires knowledge of site-specific geological and hydrogeological conditions, which in feasibility studies are often evaluated only at the single plant scale, lacking a comprehensive view and risking not to guarantee the system sustainability over time. In this paper a methodology for the sustainable design of SGSs is presented. The methodology is developed from an example on

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20

Volpi, Giorgio, Fabien Magri, Francesca Colucci, Thomas Fisher, Mattia De Caro, and Giovanni B. Crosta. "Modeling Highly Buoyant Flows in the Castel Giorgio: Torre Alfina Deep Geothermal Reservoir." Geofluids 2018 (2018): 1–19. http://dx.doi.org/10.1155/2018/3818629.

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The Castel Giorgio-Torre Alfina (CG-TA, central Italy) is a geothermal reservoir whose fluids are hosted in a carbonate formation at temperatures ranging between 120°C and 210°C. Data from deep wells suggest the existence of convective flow. We present the 3D numerical model of the CG-TA to simulate the undisturbed natural geothermal field and investigate the impacts of the exploitation process. The open source finite-element code OpenGeoSys is applied to solve the coupled systems of partial differential equations. The commercial software FEFLOW® is also used as additional numerical constraint

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21

Huo, Aidi, Xiaofan Wang, Yan Lyu, Yuxiang Cheng, Chunli Zheng, and Jinxi Song. "Simulation research on the reinjection temperature fields of deep geothermal wells based on real-scale experiment." Energy Exploration & Exploitation 37, no. 2 (2018): 646–62. http://dx.doi.org/10.1177/0144598718807556.

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The utilization of aquifer energy is a new technology closely related to the development of injection and production well technologies. Accurately predicting the effective use of geothermal energy storage in a surrounding aquifer is of great significance. A developed theory of groundwater hydro-geothermal transfer is suggested by analyzing the general features of stored energy in aquifers together with the interactions between flow connections and thermal breakthroughs. Based on the water-heat transfer in an aquifer, a coupled numerical model of groundwater flow and heat transfer is establishe

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22

Hałaj, Elżbieta, Leszek Pająk, and Bartosz Papiernik. "Finite Element Modeling of Geothermal Source of Heat Pump in Long-Term Operation." Energies 13, no. 6 (2020): 1341. http://dx.doi.org/10.3390/en13061341.

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Model simulation allows to present the time-varying temperature distribution of the ground source for heat pumps. A system of 25 double U-shape borehole heat exchangers (BHEs) in long-term operation and three scenarios were created. In these scenarios, the difference between balanced and non-balanced energy load was considered as well as the influence of the hydrogeological factors on the temperature of the ground source. The aim of the study was to compare different thermal regimes of BHEs operation and examine the influence of small-scale and short-time thermal energy storage on ground sourc

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23

Chen, Yanmei, Yu Zhang, Fang Xia, Zhao Xing, and Licheng Wang. "Impacts of Underground Reservoir Site Selection and Water Storage on the Groundwater Flow System in a Mining Area—A Case Study of Daliuta Mine." Water 14, no. 20 (2022): 3282. http://dx.doi.org/10.3390/w14203282.

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The natural ecological conditions in the Shendong mining area in China are very fragile, and water resources are seriously lacking. As the production scale of the Shendong mine continues to expand, the demand for water for production and living is also increasing; however, the available surface and underground water is decreasing, and the water scarcity in the Shendong mine is becoming increasingly apparent. Obtaining water resources is a major technological challenge for green mining. The underground reservoir is a new type of underground water conservancy project, and the water shortage in C

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24

Randow, Jakob, Shuang Chen, Katrin Lubashevsky, et al. "Modeling neighborhood-scale shallow geothermal energy utilization: a case study in Berlin." Geothermal Energy 10, no. 1 (2022). http://dx.doi.org/10.1186/s40517-022-00211-9.

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AbstractNowadays, utilizing shallow geothermal energy for heating and cooling buildings has received increased interest in the building sector. Among different technologies, large borehole heat exchanger arrays are widely employed to supply heat to various types of buildings. Recently, a 16-borehole array was constructed to extract shallow geothermal energy to provide heat to a newly-developed public building in Berlin. To guarantee the quality of the numerical model and reveal its sensitivity to different subsurface conditions, model simulations were conducted for 25 years with two finite ele

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25

Hałaj, Elżbieta, Leszek Pająk, and Bartosz Papiernik. "Simulation study of the Lower Cretaceous geothermal reservoir for aquifer thermal energy storage." Environmental Geochemistry and Health, October 28, 2021. http://dx.doi.org/10.1007/s10653-021-01130-7.

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AbstractThe aquifer thermal energy storage (ATES) has gained attention in several countries as an installation for increasing the energy efficiency of geothermal systems and the use of waste heat. The Lower Cretaceous reservoir is known as one of the most prospective for geothermal purposes in Poland. However, in the southern part of the Mogilno–Łódź Trough (Central Poland) is considered to have a lower geothermal potential. The aim of this paper is to study whether the Lower Cretaceous reservoir in this area is suitable for aquifer thermal energy storage. Prior to dynamic simulations in Feflo

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26

Gao, Yulong, Shengyan Pu, Chunmiao Zheng, and Shuping Yi. "An improved method for the calculation of unsaturated–saturated water flow by coupling the FEM and FDM." Scientific Reports 9, no. 1 (2019). http://dx.doi.org/10.1038/s41598-019-51405-4.

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Abstract Numerical modeling of water movement in both unsaturated soils and saturated groundwater aquifers is important for water resource management simulations. The development of efficient numerical algorithms for coupling unsaturated and saturated flow has been a long-lasting challenge in hydrologic modeling, especially for regional-scale modeling. In this study, a new method coupling the Finite Element Method (FEM) and Finite Difference Method (FDM), FE-FDM, is developed to solve Richards equation for simulating unsaturated–saturated water flow. The FEM is adopted to discretize the govern

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27

Ghafoori, Yaser, Matej Maček, Andrej Vidmar, Jaromír Říha, and Andrej Kryžanowski. "Heat transfer by seepage in sand: Influence of saturated hydraulic conductivity and porosity." Acta hydrotechnica, June 1, 2021, 61–75. http://dx.doi.org/10.15292/acta.hydro.2021.05.

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Heat transfer within the soil is a complex process in the presence of seepage flow. In such conditions, the soil’s thermal behavior is influenced by the thermal and hydraulic properties of the medium as well as the initial conditions and boundary conditions to which the medium is subjected. This paper presents the experimental and numerical studies of heat transfer within the sand subjected to the seepage flow. It focuses on the influence of saturated hydraulic conductivity and the porosity of medium on the heat transfer process. The temperature distribution within the sand was monitored by th

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28

Iwanek, Małgorzata. "Parameters characterizing leakages from damaged water pipes in the aspect of environmental security." Applied Water Science 12, no. 6 (2022). http://dx.doi.org/10.1007/s13201-022-01641-3.

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AbstractLeakages from buried water pipes can result in suffosion posing a threat to the environment and the infrastructure existing in cities. Leakage of water from a pressure pipe into a soil susceptible to suffosion is a very complex phenomenon, characterized by a number of different parameters. Taking into account all parameters in the empirical tests of the buried water pipe leakage is practically impossible. Thus, it is necessary to select them so that on the one hand it is possible to perform a physical simulation of the phenomenon, and on the other to obtain reliable results of investig

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29

Ma, Jiuchen, Qian Jiang, Qiuli Zhang, Yacheng Xie, Yahui Wang, and Feiyu Yi. "Effect of groundwater forced seepage on heat transfer characteristics of borehole heat exchangers." Geothermal Energy 9, no. 1 (2021). http://dx.doi.org/10.1186/s40517-021-00192-1.

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AbstractA system of borehole heat exchangers (BHEs) combined with pumping–injection wells is established in areas where the groundwater is shallow and the seepage velocity is weak. The pumping and injection wells are set on both sides of the BHEs. According to the three-dimensional unsteady-state heat transfer model in the aquifer, the convection–dispersion analytical solution of excess temperature is derived that considers groundwater-forced seepage and thermal dispersion effects and axial effect of the BHEs. Then, we use the dimensional analysis method and similarity criteria to build a cont

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