Results 11 to 20 of about 817 (127)
HydrologyIn recent times, drilling groundwater wells for irrigation, domestic, and industrial uses is increasing at a high rate in Saudi Arabia, meaning that groundwater is becoming a primary water resource.
Milad Masoud +5 more
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Erratum to: An approach to interpretation of step drawdown tests [PDF]
Hydrogeology Journal, 2011 The work used two approaches for fixing the boundary to fluid flow. In the first approach the boundary to fluid flow was assumed to be length from the well bottom to the pumping water level. The second approach was based on the assumption of the boundary length being the total length of the screen (See section Calculation of Reynold’s number on page ...
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Principle of superposition versus CVFD approach in analyzing the step-drawdown test data
, 2022 Abstract A nonlinear partial differential equation is required for representing groundwater flow in an unconfined aquifer. In pumping tests, analytical models use linearized version of the Boussinesq's flow equation with the principle of superposition to incorporate the effects of time varying pumping rate and boundary conditions for estimating
Luminda Niroshana Gunawardhana +3 more
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Analisa Kuantitas Dan Kualitas Airtanah Di Kabupaten Mojokerto
Jurnal Teknik Pengairan, 2014 Groundwater is one of the many alternative sources of water that has a large quantity and good quality. In the research area at Mojokerto regency, groundwater utilizing for irrigation but the use is limited, so it doesn’t cause environmental damage ...
Harri Pranowo +2 more
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A generalised solution for step-drawdown tests including flow dimension and elasticity
Water SA, 2001 Step-drawdown and multi-rate tests present convenient tools for the estimation of the long-term yield of boreholes. However, the analytical methods commonly employed for the analysis of such tests are all based on the assumption that the drawdown in a borehole is a linear function of the discharge rate.
Van Tonder, GJ, Botha, JF, Van Bosch, J
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Evaluation of Low or High Permeability of Fractured Rock using Well Head Losses from Step-Drawdown Tests [PDF]
Journal of the Korean Radioactive Waste Society, 2012 PURPOSE: An evaluation method of high or low permeability of a fractured rock aquifer using a well head loss term from a step drawdown test is provided to identify a primary aquifer section in wells and compare the status of a high or low permeability section.
Byung-Woo Kim +3 more
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SOFTWARE SOLUTIONS FOR ANALYZING DATA OBTAINED FROM STEP DRAWDOWN TEST
Mugla Journal of Science and TechnologyStep-drawdown tests play a critical role in determining the hydraulic properties of aquifers and in the management of groundwater resources. The data obtained from these tests allow for the analysis of parameters such as aquifer hydraulic conductivity, specific yield, and storage coefficient.
Tolga Necati Yaylım, Bedri Kurtuluş
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A new approach to the step-drawdown test
, 2009 In this paper a new approach to perform step-drawdown tests in presented. Step-drawdown tests known so far are performed strictly keeping the value of the pumping rates constant through all the steps of the test. Current technology allows us to let the submerged electric pumps work at a specific revolution per minute (rpm) and allows us to suitably ...
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The Step-Drawdown Test and Non-Darcian Flow: A Critical Review of Theory, Methods and Practice [PDF]
Hydrology Research, 1982 Step-drawdown tests are usually carried out with succeeding steps of increased pumping yield, each step of equal duration of 1 hour. The background for this procedure is reviewed, and it is shown, that very often much shorter duration of steps is adequate. The analysis of step-tests is usually based on the formulas of Jacob or Rorabaugh.
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Assessment of head losses exponential parameter (P) in step drawdown test (SDT)
, 2020 51
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