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Fluid simulation in a cyclone reverse circulation well washing device based on computational fluid dynamics [PDF]

open access: goldEnergy Science & Engineering, 2019
This paper instructs the working principle of the well washing device and its parameter optimization in practical applications. A fluent fluid engineering simulation software was used to establish the calculation model of the bottom flow field. The fluid
Chun Sheng Wang, Lei Zhang
doaj   +4 more sources

Computational Fluid Dynamics for Brain Circulation and Aneurysm with Therapeutic Devices [PDF]

open access: greenInterventional Neuroradiology, 2004
We analysed fluid dynamics at brain arteries having multiple inflow and out flow like Willis ring based on clinical imaging modalities. In addition, we analysed fluid dynamics with therapeutic devices like coils and stents to simulate their influences to blood flow. 3D CTA and MRA obtained three-dimensional structures of the brain vessels.
H. Iwase   +4 more
openaire   +4 more sources

Temporal and spatial variations in CSF pressure are influenced by electrical stimulation of the OCI muscles in beagles [PDF]

open access: yesScientific Reports
Understanding cerebrospinal fluid (CSF) dynamics is crucial in the fields of neurosurgery and physiology. The myodural bridge (MDB), a dense connective tissue structure connecting the suboccipital muscles to the cervical spinal dura mater, has recently ...
Xiao-Ying Yuan   +9 more
doaj   +2 more sources

New Lagrangian view of vorticity evolution in two-dimensional flows of liquid and gas [PDF]

open access: yesИзвестия высших учебных заведений: Прикладная нелинейная динамика, 2022
Purpose of the study is to obtain formulas for such a speed of imaginary particles that the circulation of the speed of a (real) fluid along any circuit consisting of these imaginary particles changes (in the process of motion of imaginary particles ...
Sizykh, Grigory B.
doaj   +1 more source

Reconciling opposite trends in the observed and simulated equatorial Pacific zonal sea surface temperature gradient

open access: yesGeoscience Letters, 2023
The reasons for large discrepancies between observations and simulations, as well as for uncertainties in projections of the equatorial Pacific zonal sea surface temperature (SST) gradient, are controversial.
Wenrong Bai   +4 more
doaj   +1 more source

Subseasonal Prediction of Regional Antarctic Sea Ice by a Deep Learning Model

open access: yesGeophysical Research Letters, 2023
Antarctic sea ice concentration (SIC) prediction at seasonal scale has been documented, but a gap remains at subseasonal scale (1–8 weeks) due to limited understanding of ice‐related physical mechanisms.
Yunhe Wang   +6 more
doaj   +1 more source

Indo-Pacific warm pool present warming attribution and future projection constraint

open access: yesEnvironmental Research Letters, 2022
The Indo-Pacific warm pool (IPWP) has warmed and expanded substantially over the past decades, which has significantly affected the hydrological cycle and global climate system.
Wenrong Bai   +4 more
doaj   +1 more source

Quantifying 4D flow cardiovascular magnetic resonance vortices in patients with pulmonary hypertension: A pilot study

open access: yesPulmonary Circulation, 2023
In this 4D flow cardiovascular magnetic resonance (CMR) study, vortical blood flow in the main pulmonary artery (MPA) is quantified using circulation (ᴦ), a metric used in fluid dynamics to quantify the rotational components of flow. Circulation (ᴦ) is a
Ali Borhani   +9 more
doaj   +1 more source

Tumescent Injections in Subcutaneous Pig Tissue Disperse Fluids Volumetrically and Maintain Elevated Local Concentrations of Additives for Several Hours, Suggesting a Treatment for Drug Resistant Wounds. [PDF]

open access: yes, 2020
PurposeBolus injection of fluid into subcutaneous tissue results in accumulation of fluid at the injection site. The fluid does not form a pool. Rather, the injection pressure forces the interstitial matrix to expand to accommodate the excess fluid in ...
Dunn, James CY   +5 more
core   +2 more sources

Simulating Fracture Sealing by Granular LCM Particles in Geothermal Drilling

open access: yesEnergies, 2020
Lost circulation occurs when the returned fluid is less than what is pumped into the well due to loss of fluid to pores or fractures. A lost-circulation event is a common occurrence in a geothermal well.
Lu Lee, Arash Dahi Taleghani
doaj   +1 more source

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