Results 151 to 160 of about 655,526 (298)

Experimental and smoothed particle hydrodynamics‐finite element method simulation investigation of synergistic erosion mechanism of gangue‐based abrasive water jets

open access: yesDeep Underground Science and Engineering, EarlyView.
This study proposes an eco‐friendly coal permeability enhancement technique by utilizing mine waste gangue as an abrasive in high‐pressure water jets. Integrating erosion experiments with smoothed particle hydrodynamics‐finite element method coupled simulations, the research study elucidates the flow field dynamics and a nonlinear solid–liquid ...
Qingxiang Wang   +4 more
wiley   +1 more source

Development Trend and Key Technologies of Hydraulic End of High-Power Fracturing Pump

open access: yesShiyou jixie
As the development of unconventional oil and gas wells is increasingly difficult in China,the requirements are raised for the service life of hydraulic end of high-power fracturing pump in continuous fracturing operations with high power,ultrahigh ...
Yu Dawei, Tan Lijun, Shi Xijun
doaj  

Behavior of downstream swimming brown trout in accelerating and high flow velocity - Movement matters. [PDF]

open access: yesPLoS One
Wagner F   +10 more
europepmc   +1 more source

Multi‐factor coupling effects in hydraulic fracturing of laminated shale: Experimental insights and physics‐informed neural network‐driven optimization

open access: yesDeep Underground Science and Engineering, EarlyView.
This study establishes a multi‐factor coupling framework for predicting breakdown pressure in laminated shale by integrating experimental hydraulic fracturing tests, physics‐informed neural networks (PINNs), and Sobol sensitivity analysis. It reveals how differential stress, the bedding dip angle, and the injection rate interact to influence fracture ...
Tao Wang   +6 more
wiley   +1 more source

Investigation on the mechanical behavior of the multiple‐layered lining structure of a water conveyance tunnel with high internal water pressure

open access: yesDeep Underground Science and Engineering, EarlyView.
This study presents large‐scale similarity model testing (geometric ratio 3.6) of an innovative multiple‐layered lining system—comprising exterior precast segments, middle self‐compacting concrete, and an interior steel pipe—for high‐pressure (0.75 MPa) water conveyance tunnels.
Ramin Asadi   +4 more
wiley   +1 more source

Research on working condition analysis and parameter optimization of hydraulic jet pumps in deep coalbed methane wells: a case study of Daning-Jixian block on eastern margin of Ordos Basin

open access: yesYouqicang pingjia yu kaifa
Hydraulic jet pumping is a widely used drainage and production technique in the artificial lift stage of deep coalbed methane (CBM) wells. In the early stage of deep CBM development in the Daning-Jixian block, there was generally a lack of systematic ...
WU JIANJUN   +7 more
doaj  

Spatial variation in liana effects on host‐tree allometry and biomass in an intact tropical forest

open access: yesEcography, EarlyView.
Lianas are increasing in abundance across the tropics, yet local spatial variation in their effects on host‐tree allometry and biomass, and the drivers of this variation within forests, remain poorly understood. Using field inventory, drone photogrammetry, and terrestrial laser scanning (TLS) across a 50‐ha plot on Barro Colorado Island, Panama, we ...
Sruthi M. Krishna Moorthy   +9 more
wiley   +1 more source

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