Results 31 to 40 of about 535,753 (327)

Numerical Investigation on the Influence of the Streamlined Structures of the High-Speed Train’s Nose on Aerodynamic Performances

open access: yesApplied Sciences, 2021
The structural design of the streamlined shape is the basis for high-speed train aerodynamic design. With use of the delayed detached-eddy simulation (DDES) method, the influence of four different structural types of the streamlined shape on aerodynamic ...
Zhenxu Sun   +4 more
doaj   +1 more source

Analysis of the Coal Fluidization Mining Process with the Continuous-Discontinuous Coupled Particle-Block Method

open access: yesGeofluids, 2022
In situ fluidization mining is a promising method which shows considerable potential for reducing the ecological influence impacts of coal mining. During fluidization mining, coal gangue will be separated from the ores, filled back, and returned to the ...
Jing Li   +3 more
doaj   +1 more source

Study on mathematical model construction of typical gorge wind field

open access: yesEngineering Applications of Computational Fluid Mechanics, 2023
Wind conditions in gorges have a significant impact on the safe operation of high-speed trains, due to the lack of a unified gorge wind model and the limitations of traditional simulations that use oversimplified wind models, the complex wind speed ...
Jionghao Cheng   +5 more
doaj   +1 more source

Fast and versatile fluid-solid coupling for turbulent flow simulation

open access: yesACM Transactions on Graphics, 2021
The intricate motions and complex vortical structures generated by the interaction between fluids and solids are visually fascinating. However, reproducing such a two-way coupling between thin objects and turbulent fluids numerically is notoriously ...
C. Lyu, Wei Li, M. Desbrun, Xiaopei Liu
semanticscholar   +1 more source

Fluid-solid-thermal coupling analysis of an underwater valve

open access: yesJournal of Physics: Conference Series, 2021
Abstract An underwater valve at 3000 meters underwater was chosen as the research object, aiming at obtaining the force characteristics of the underwater valve under high pressure and large temperature difference in the deep sea. The principle of fluid-solid-thermal three-field coupling was analyzed by using Fluent and ANSYS Workbench ...
Jiazhen Han   +3 more
openaire   +1 more source

Vibration Control of Marine Top Tensioned Riser with a Single Tuned Mass Damper

open access: yesJournal of Marine Science and Engineering, 2020
The study of the Tuned Mass Damper (TMD) on Top Tensioned Risers (TTRs) through the application of numerical analysis is of great significance for marine engineering.
Jixiang Song   +4 more
doaj   +1 more source

A semi-implicit discrepancy model of Reynolds stress in a higher-order tensor basis framework for Reynolds-averaged Navier–Stokes simulations

open access: yesAIP Advances, 2021
With the rapid development of artificial intelligence, machine learning algorithms are becoming more widely applied in the modification of turbulence models. In this paper, with the aim of improving the prediction accuracy of the Reynolds-averaged Navier–
Zhen Zhang   +6 more
doaj   +1 more source

Hydro-micromechanical modeling of wave propagation in saturated granular media [PDF]

open access: yes, 2018
Biot's theory predicts the wave velocities of a saturated poroelastic granular medium from the elastic properties, density and geometry of its dry solid matrix and the pore fluid, neglecting the interaction between constituent particles and local flow ...
Cheng, Hongyang   +4 more
core   +4 more sources

Study on dynamic characteristic analysis of vehicle shock absorbers based on bidirectional fluid–solid coupling

open access: yesEngineering Applications of Computational Fluid Mechanics, 2021
To design a high-quality vehicle shock absorber, the internal structure of the piston assembly of a shock absorber is analyzed in this study. Using the fluid–solid coupling method, a high-precision flow grid model and a solid finite element model of the ...
Qiping Chen   +4 more
semanticscholar   +1 more source

Rapid evaluation of capillary pressure and relative permeability for oil–water flow in tight sandstone based on a physics-informed neural network

open access: yesJournal of Petroleum Exploration and Production Technology, 2023
Efficient and accurate evaluation of capillary pressure and relative permeability of oil–water flow in tight sandstone with limited routinely obtainable parameters is a crucial problem in tight oil reservoir modeling and petroleum engineering. Due to the
Lili Ji   +6 more
doaj   +1 more source

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