Identification of the constraints of physical properties on fluid flow rate (as a preliminary study for analysis of changes in subsurface conditions in the KEK Mandalika Lombok)

Abstract The KEK Mandalika area, the southern coast of Lombok Island, is an area that is growing up in the tourism sector. The main need for tourist areas is the availability of clean water. The problem that occurs in coastal areas is seawater intrusion. The seawater intrusion can cause the changes...

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Bibliographic Details
Published inJournal of physics. Conference series Vol. 1816; no. 1; p. 12100
Main Authors Alaydrus, A T, Susilo, A, Naba, A, Minardi, S
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.02.2021
Subjects
Coastal zone
Computational fluid dynamics
Density
Flow velocity
Fluid flow
Geoelectricity
Groundwater
Groundwater flow
Modelling
Physical properties
Physics
Salinity
Salt water intrusion
Seawater
Tourism
Tourist areas
Viscosity
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Summary:Abstract The KEK Mandalika area, the southern coast of Lombok Island, is an area that is growing up in the tourism sector. The main need for tourist areas is the availability of clean water. The problem that occurs in coastal areas is seawater intrusion. The seawater intrusion can cause the changes in subsurface conditions, especially in groundwater. These changes have an impact on changes in subsurface physical properties, which can be detected by geophysical measurements and modeling based on geoelectric and gravity data. In monitoring the changes of subsurface conditions, it is necessary to observe the constraints based on the value of conductivity, density, viscosity, and fluid flow rate so that physical modeling can be carried out. The method used was an experiment with 11 mixed solutions of groundwater and seawater with different concentrations. The results show that the salinity, conductivity and density have a proportional relationship with viscosity. The higher the viscosity, the lower the groundwater flow rate, and vice versa. Based on these results, the value of the constraints for each variable is obtained, which is conductivity (1.930- 38) mS ; density (0.995-1.021) kgm −3 ; salinity (1.06-25.1) ppt ; viscosity (0.835-0.876) x10 −3 kgm −1 s −1 ; fluid flow rate (1292-1388) ms −1 .
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1816/1/012100