Results 61 to 70 of about 909 (221)

CFD‐Assisted Spray Decontamination Process Assessment for Nuclear Tank Decommissioning

open access: yesScience and Technology of Nuclear Installations, Volume 2026, Issue 1, 2026.
The decontamination of high‐level radioactive nuclear storage tanks with complex internal devices poses critical challenges in nuclear decommissioning engineering. This study develops a computational fluid dynamics (CFD) framework integrating the volume of fluid–discrete phase model (VOF–DPM) with the Eulerian wall film model (EWFM) to systematically ...
Yang Fei   +4 more
wiley   +1 more source

Effect of Airfoil's Attack Angle and Airfoil‐Cylinder Configuration on Turbulence Parameters and Airfoil's Aerodynamic Efficiency

open access: yesEnergy Science &Engineering, Volume 13, Issue 11, Page 5432-5450, November 2025.
The increasing demand for energy in daily life and the finite nature of fossil fuel reserves have driven researchers worldwide to explore renewable energy sources such as wind energy. To optimize the performance and minimize energy losses in vertical wind turbines, parameters such as the airfoil's angle of attack, as well as the horizontal and vertical
Reza Abbaspour   +2 more
wiley   +1 more source

Analysis, simulation and control of the Von Karman vortex street behind a circular cylinder

open access: yes, 2020
This work focuses on studying the 2D wake pattern behind a bluff body/airfoil immersed in a fluid. Within a specific Reynolds number range, a repeating pattern of swirling vortices shows up: the "Von Karman Vortex Street".
Carullo, Francesco
core  

Extrapolation Boundary Conditions for 2‐D Smoothed Particle Hydrodynamics

open access: yesInternational Journal for Numerical Methods in Fluids, Volume 97, Issue 9, Page 1248-1279, September 2025.
This paper introduces novel inflow, outflow, and wall boundaries for the WCSPH method. Utilising innovative concepts from finite volume methods, fluid properties of sequential dynamic particles with varying distances to boundaries are extrapolated to ghost and wall particles using first‐order Taylor series expansion.
Hossein Mahdizadeh   +3 more
wiley   +1 more source

Integrated Turbulence and Machine Learning Models Explain Pier Scour in Erodible Channels

open access: yesWater Resources Research, Volume 61, Issue 9, September 2025.
Abstract Pier scour, a primary cause of bridge failures, stems from turbulent erosion at the pier's approach surface, jeopardizing bridge stability and influencing both river morphology and interactions between aquatic and terrestrial ecosystems. The scouring process, initiated by turbulent eddies interacting with sediments over erodible channels ...
Shuolin Li
wiley   +1 more source

Fluctuating Lift Forces of the Karman Vortex Streets on Single Circular Cylinders and in Tube Bundles: Part 2—Lift Forces of Single Cylinders

open access: yes, 1972
The fluctuating lift force of the Karman vortex on a single circular cylinder will be investigated theoretically for an ideal inviscid vortex street with rectilinear vortices. In this investigation the model introduced by von Karman will be used.
Y. N. Chen
core   +1 more source

Existence and Stability of Vortices and Vortex Arrays [PDF]

open access: yes, 1984
The stability to three-dimensional disturbances of three classical steady vortex configurations in an incompressible inviscid fluid is studied in the limit of small vortex cross-sectional area and long axial disturbance wavelength.
Robinson, Allen Conrad
core   +1 more source

Numerical Calculation of the Influence of Working Conditions and Rotational Speed on Pressure Pulsation of a Self‐Priming Pump

open access: yesEnergy Science &Engineering, Volume 13, Issue 8, Page 3954-3978, August 2025.
To accurately determine the pressure fluctuation characteristics of a specific self‐priming pump, a full three‐dimensional computational model was established, including the S‐tube, impeller domain, volute domain, gas‐liquid separation chamber, front and rear cavities, wear ring clearance, and reflux hole.
Hai‐Bing Jiang   +5 more
wiley   +1 more source

Research on swimming hydrodynamics based on a three‐dimensional high‐precision fish model

open access: yesRiver, Volume 4, Issue 3, Page 341-350, August 2025.
Abstract Fish swimming hydrodynamics serves as a critical foundation for aquatic ecological conservation, with recent research extending from 2D to 3D perspectives. This study employs 3D high‐fidelity modeling with dynamic mesh technology to investigate how cylindrical obstacles at varying positions affect Carassius auratus locomotion. Analysis of nine
Lin Sun   +4 more
wiley   +1 more source

Numerical Simulation of three-dimensional flow around a circular cylinder of finite length

open access: yesZhongguo Jianchuan Yanjiu, 2018
[Objectives]In this paper, in order to study the flow characteristics and mechanism of three-dimensional flow around a circular cylinder of finite length,[Methods] a numerical simulation using a Large Eddy Simulation (LES) and vortex structural ...
WANG Xiaocong, GUI Hongbin, LIU Yang
doaj   +1 more source

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