Note on the Nonlinear Fokker-Planck Diffusion –Convection Model Arising In Ground Water Recharge Problem by Spreading In Fluid Flow through Porous Media
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DSD-INT 2018 Towards an integrated hydrodynamic, waterquality, and ecological...Deltares
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The interaction between groundwater and Cikapundung river water has not changed significantly in 16 years of period. This paper revisit the similar research based on 43 measurement points: 13 dug wells, 2 springs, and 24 river, distributed along the riverbank at Curug Dago to Batununggal segment. The field measurements were taken in rainy season of April to May 2014 using portable instruments. Six parameters were measured: water level, temperature, total dissolved solids (TDS), dissolved-oxygen (DO), and pH. The new model is unable to detect significant change in water flow, however it finds two local anomalies in Dago Pojok and Cikapayang area. Both locations show local drawdown circle which can induce influent stream in overal effluent environment. Moreover, water quality parameters indicate mixing processes between groundwater and river water, with erratic pattern both in effluent and influent stream. Also some DO and TDS readings exceed the permissible limit. These values suggest a lifted groundwater mineralization from organic and non-organic sources and change of chemical stability. The source of contamination is still under further examination.
Similar to Note on the Nonlinear Fokker-Planck Diffusion –Convection Model Arising In Ground Water Recharge Problem by Spreading In Fluid Flow through Porous Media
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
Groundwater and River Water Interaction on Cikapundung River: Revisited (ICMN...Dasapta Erwin Irawan
The interaction between groundwater and Cikapundung river water has not changed significantly in 16 years of period. This paper revisit the similar research based on 43 measurement points: 13 dug wells, 2 springs, and 24 river, distributed along the riverbank at Curug Dago to Batununggal segment. The field measurements were taken in rainy season of April to May 2014 using portable instruments. Six parameters were measured: water level, temperature, total dissolved solids (TDS), dissolved-oxygen (DO), and pH. The new model is unable to detect significant change in water flow, however it finds two local anomalies in Dago Pojok and Cikapayang area. Both locations show local drawdown circle which can induce influent stream in overal effluent environment. Moreover, water quality parameters indicate mixing processes between groundwater and river water, with erratic pattern both in effluent and influent stream. Also some DO and TDS readings exceed the permissible limit. These values suggest a lifted groundwater mineralization from organic and non-organic sources and change of chemical stability. The source of contamination is still under further examination.
Revisiting hydrostratigraphy in Bandung-Soreang Groundwater Basin: a well-log...Dasapta Erwin Irawan
Author
Sunarwan, B.1, Irawan, DE. 1, Puradimaja, DJ. 1, Notosiswoyo, S.2, Sadisun, IA1, Setiawan, T.3, and Anugrah, RM4
Affiliation
1 Faculty of Earth Sciences and Technology, Bandung Institute of Technology, Institut Teknologi Bandung,
2 Faculty of Mining and Petroleum Engineering, Bandung Institute of Technology, Institut Teknologi Bandung,
Jl. Ganesa No. 10, Bandung, 40132
3 Geological Survey of Indonesia, Ministry of Energy and Mineral Resources,
Jl. Diponegoro No. 57, Bandung, 40122
4 Faculty of Geology, Padjadjaran University, Jl. Raya Bandung Sumedang Km. 21. Sumedang
Corresponding author:
a)Irawan, DE: d.erwin.irawan@gmail.com
Abstract
An attempt to revisit the hydro-stratigraphy of Bandung-Soreang Groundwater Basin (BSGB) has been done based on 111 well-logging training dataset. Transformation of resistivity values from well-log data to relative porosity and permeability used Chilingarian approach and Baker-Hughes Atlas of log responses. Then boundary marker was drawn to separated different aquifer layers. Simple linear regression equations were derived from the transformation: (a) tuff layers: θ= -0.0023ρ+2.5619,μ= -63.514θ+167.38,σ=22.912 μ+238.78; (b) clay layers: θ= -0.0181 ρ+2.6281,μ= -61.842 θ+163.91,σ=5.1202 μ-11.503; (c) sand layers: θ= -0.0078 ρ+2.5992,μ= -60.75 θ+161.02,σ=394.35 μ-2156.8. Based on the new aquifer taxonomy, three hydro-stratigraphic units (HSU) and six sub HSU have been defined. UHs 1 is the top layer of the BSGB, located at elevation above 650 masl. It has three sub HSU that consists of tuf and sand. The permeability (K) values of this unit range from 0,0014 to 0.1 m per day. HSU-2 with two sub HSU consists of tuf and sand, located at elevation from 625 to 650 masl. This unit has K values from 0.1 to 6 m per day. HSU-3, which is located at elevation from 500 to 625 masl, has only one sub HSU. This unit consists of tuf, sand, and volcanic breccias, with K values from 0.3 to 7.1 m per day. This models, however, are still needed more test to new dataset.
Spatial analysis of groundwater quality data using geoR and mgcv R-package (I...Dasapta Erwin Irawan
Author:
Irawan, DE.1, Prabowo, K.1, and Akter, F.2, Vervoort, W.2
Affiliation:
1 Faculty of Earth Sciences and Technology, Bandung Institute of Technology, Institut Teknologi Bandung,
Jl. Ganesa No. 10, Bandung, 40132
2 Faculty of Agriculture and Environment, University of Sydney
Biomedical Building, Australian Technology Park, NSW 2015
a)Irawan, DE: d.erwin.irawan@gmail.com
Abstract:
Quantitative-spatial analysis has been applied to 295 samples of shallow groundwater quality data from Bandung-Soreang Groundwater Basin (BSGwB) taken in 1997, 1998, 2007, 2010, and 2011. This paper discuss the use of variogram using geoR and generalised additive model (GAM) using mgcv R-package to identify the spatial distribution and mixing process betwee groundwater and Cikapundung river water. The variograms show significant water quality trend in north-south direction, and in the direction to the Cikapundung River. From the GAM tests using gaussian and gamma family, some significant elements can be identified: (1) geological control from Fe, Mn, Na concentration; (2) agricultural control from NO2, NO3 concentration; and (3) other surficial control from EC, CO3, CO2, SO4 concentration. Both analysis suggest the close interaction between groundwater and river water and the occurrence of mixing between both.
The Effect of Geometry Parameters and Flow Characteristics on Erosion and Sed...Dr. Amarjeet Singh
One of the most critical problems in the river
engineering field is scouring, sedimentation and morphology
of a river bed. In this paper, a finite volume method
FORTRAN code is provided and used. The code is able to
model the sedimentation. The flow and sediment were
modeled at the interception of the two channels. It is applied
an experimental model to evaluate the results. Regarding the
numerical model, the effects of geometry parameters such as
proportion of secondary channel to main channel width and
intersection angle and also hydraulic conditionals like
secondary to main channel discharge ratio and inlet flow
Froude number were studied on bed topographical and flow
pattern. The numerical results show that the maximum
height of bed increased to 32 percent as the discharge ratio
reaches to 51 percent, on average. It is observed that the
maximum height of sedimentation decreases by declining in
main channel to secondary channel Froude number ratio. On
the assessment of the channel width, velocity and final bed
height variations have changed by given trend, in all the
ratios. Also, increasing in the intersection angle accompanied
by decreasing in flow velocity variations along the channel.
The pattern of velocity and topographical bed variations are
also constant in any studied angles.
23. The effect of plastic fines on the pore pressure generation characteristi...PinakRay2
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Note on the Nonlinear Fokker-Planck Diffusion –Convection Model Arising In Ground Water Recharge Problem by Spreading In Fluid Flow through Porous Media
1. Abstract of Applied Sciences and Engineering, 2014, Vol.1
DOI: 10.18488/journal.1001/2014.1/1001.1
1st
International Scientific Conference on Applied
Sciences and Engineering
20-21 December, 2014
Pearl International Hotel, Kuala Lumpur, Malaysia
Conference Website: www.scihost.org
1
Paper ID: 521/14/1
st
ISCASE
Note on the Nonlinear Fokker-Planck Diffusion –Convection
Model Arising In Ground Water Recharge Problem by
Spreading In Fluid Flow through Porous Media
T. R. Singh1
--- R.K. Singh2
1
Applied Mathematics and Humanities Department, S.V. National Institute of Technology, Surat
2
Faculty of Science, The M S Univeristy, Vadodara
Abstract
The solution of non-linear equation of Fokker Planck diffusion-convection equation has
been converted into the Burger’s equation with appropriate value of the constant and it
has been solved by appropriate conditions. Its graphs are given for vs. x for different
time t. The solution represents the volumetric soil water content at different downward
depth.
Keywords: Burger’s equation, one dimensional flow, Porous media
