Results 141 to 150 of about 373,804 (364)

Balance of Liquid-phase Turbulence Kinetic Energy Equation for Bubble-train Flow [PDF]

, 2004
Milica Ilić, Martin Wörner, Dan Gabriel Cacuci   +2 more
openalex   +1 more source

Boundary Layer Meshing and Wall Functions Selection for Numerical Simulation of Solid–Liquid Two‐Phase Flow

Energy Science &Engineering, EarlyView.
This figure illustrates the optimal near‐wall treatment schemes (first‐layer height and wall function type) for solid–liquid two‐phase CFD of suspended sediment, which are correlated with particle size and flow velocity. ABSTRACT Near‐wall treatment (boundary‐layer meshing and wall functions) is a major uncertainty in solid–liquid two‐phase CFD of ...
Zichao Zhang, Huayang Hai, Soon Keat Tan, Yanpin Li, Pengcheng Hao   +4 more
wiley   +1 more source

Analysis of Turbulent Modeling for Free‐Surface Flows Using a Hybrid RANS‐LES Model and Particle‐Based Moving Particle Semi‐Implicit Method

International Journal for Numerical Methods in Fluids, EarlyView.
A hybrid RANS‐LES turbulence model adapted for the Moving Particle Semi‐implicit method is employed to investigate a turbulent free surface flow. A method based on the cell‐linked list is proposed to speed up the nearest wall search for the turbulence model.
Fabio Kenji Motezuki, Lucas Soares Pereira, Liang‐Yee Cheng, Fernando Akira Kurokawa   +3 more
wiley   +1 more source

Scaling Transition of Active Turbulence from Two to Three Dimensions

Advanced Science
Turbulent flows are observed in low‐Reynolds active fluids, which display similar phenomenology to the classical inertial turbulence but are of a different nature.
Da Wei, Yaochen Yang, Xuefeng Wei, Ramin Golestanian, Ming Li, Fanlong Meng, Yi Peng   +6 more
doaj   +1 more source

Generalized universal instability: Transient linear amplification and subcritical turbulence

, 2015
In this work we numerically demonstrate both significant transient (i.e. non-modal) linear amplification and sustained nonlinear turbulence in a kinetic plasma system with no unstable eigenmodes.
Dorland, William, Landreman, Matt, Plunk, Gabriel G.   +2 more
core   +1 more source

Kinetic energy in grid turbulence: comparison between data and theory [PDF]

, 2003
Johannes Gérson Janzen, Leonardo Barra Santana de Souza, Harry Edmar Schulz   +2 more
openalex   +1 more source

Impact of Uncertain Parameters on Navier–Stokes Equations With Heat Transfer via Polynomial Chaos Expansion

International Journal for Numerical Methods in Fluids, EarlyView.
This study investigates the impact of uncertain parameters on Navier–Stokes equations coupled with heat transfer using the Intrusive Polynomial Chaos Method (IPCM). Sensitivity equations are formulated for key input parameters, such as viscosity and thermal diffusivity, and solved numerically using the Finite Element‐Volume method.
N. Nouaime, B. Després, M. A. Puscas, C. Fiorini   +3 more
wiley   +1 more source

Downdraft Devices for Negative Emissions—Quantification Study and Environmental Implication

Greenhouse Gases: Science and Technology, EarlyView.
ABSTRACT Methane (CH4) is a potent greenhouse gas with a global warming potential far exceeding that of CO2 over short time horizons. Its removal from the atmosphere remains challenging due to its low ambient concentration and chemical stability. This study explores downdraft energy towers (DETs) as an innovative CH4 mitigation technology that enhances
Xiaokun Yao, Tao Tao, Tingzhen Ming, Renaud de Richter, Wei Li   +4 more
wiley   +1 more source

Effects of Turbulence Modeling on the Simulation of Wind Flow over Typical Complex Terrains

Applied Sciences
The correct prediction of the wind speed and turbulence levels over complex terrain is essential for accurately assessing wind turbine wake recovery, power production, safety, and wind farm design.
Guolin Ma, Linlin Tian, Yilei Song, Ning Zhao   +3 more
doaj   +1 more source

Neutrally stable atmospheric flow over a two-dimensional rectangular block [PDF]

The phenomena of atmospheric flow over a two dimensional surface obstruction such as a building modeled as a rectangular block are analyzed by an approach using the Navier-Stokes equations with a two equation model of turbulence. The partial differential
Bitte, J., Frost, W., Shieh, C. F.
core   +1 more source