Results 21 to 30 of about 23,917 (167)
Improving pumping plant efficiency does not always save energy
California Agriculture, 2002 California's energy crisis in 2001 resulted in a state-funded program for testing irrigation pumps and improving pumping plant efficiency, with the goal of reducing energy use in California agriculture.
B Hanson
doaj +2 more sources
Water Resources ResearchSteady flow toward a fully penetrating well takes place in a natural porous formation, where the erratic spatial variations, and the raising uncertainty, of the hydraulic conductivity K are modeled within a stochastic framework which regards the log ...
Gerardo Severino +2 more
doaj +1 more source
Pump and Valve Inservice Testing: How Pump and Valve Testing Evolved [PDF]
ASME/NRC 2017 13th Pump and Valve Symposium, 2017 The O&M Code was developed when it was decided to move Pump and Valve In-Service Testing Requirements from ASME Boiler and Pressure Vessel Code Section XI to a standalone Code. IST for Pumps was originally is ASME Section XI IWP and for Valves IWV. Safety and Relief Valves were a Power Test Code and not in the scope of the ASME Boiler and Pressure ...
openaire +1 more source
Ergodicity of pumping tests [PDF]
Water Resources Research, 2007 Standard interpretations of pumping tests in heterogeneous formations rely on effective representations of porous media, which replace spatially varying hydraulic properties with their constant counterparts averaged over the support volume of a test. Rigorous approaches for deriving representative (effective, apparent, upscaled, etc.) parameters employ
Sánchez-Vila, Xavier +1 more
openaire +2 more sources
Frontiers in WaterGroundwater modelers frequently grapple with the challenge of integrating aquifer test interpretations into parameters used by regional models. This task is complicated by issues of upscaling, data assimilation, and the need to assign prior probability ...
Neil Manewell, John Doherty, Phil Hayes
doaj +1 more source
Eos, Transactions American Geophysical Union, 1989 Knowledge of aquifer system hydraulic porperties is an essential elemeat in design of water supply wells and well fields; hazardous waste contamination problems require knowledge of hydraulic properties for placement of monitoring wells, for detection of waste‐migration plumes and other monitoring needs, and for design of groundwater remediation ...
openaire +1 more source
Известия высших учебных заведений: Геология и разведка, 2018 The methodical aspects of the processing and interpreting the results of the experimental filtration tests of the layered strata by the constant-rate pumping tests have been developed. Determination of the filtration and volumetric characteristics of the
M. M. Burakov
doaj +1 more source
Estimation of hydraulic parameters from pumping tests in a multiaquifer system
Underground Space, 2020 The hydrogeologic conditions in Tianjin, China, are characterized by a system of multiple alternating aquifers and aquitards and a high groundwater level.
Da Ha +4 more
doaj +1 more source
Open Geosciences, 2015 Hydraulic conductivities (K) can be obtainedfrom pumping and slug tests as well as grain size analysis.Although empirical methods for such estimations are longstanding,there is still insufficient comparison of K valuesamong the various approaches.
Pucko Tatjana, Verbovšek Timotej
doaj +1 more source
Dynamic coupling modelling and application case analysis of high-slip motors and pumping units.
PLoS ONE, 2020 To solve the issues and difficulties in the high-coupling modelling of beam pumping units and high-slip motors, external characteristic experiments of high-slip motors were performed where the external database and characteristic correlation equations of
Ziming Feng +5 more
doaj +1 more source