Results 21 to 30 of about 3,071,655 (192)

Modelling the Dynamics of Turbulent Floods [PDF]

open access: yesSIAM Journal on Applied Mathematics, 2003
Consider the dynamics of turbulent flow in rivers, estuaries, and floods. Based on the widely used k-$\epsilon$ model for turbulence, we use the techniques of center manifold theory to derive dynamical models for the evolution of the water depth and of vertically averaged flow velocity and turbulent parameters.
Mei, Z., Roberts, A. J., Li, Zhenquan
openaire   +5 more sources

Quantifying guidelines and criteria for using turbulence models in complex flows [PDF]

open access: yes, 2011
A framework for assessing the key statistical parameters of complex flows in choosing appropriate turbulence prediction methods on a quantitative basis is developed.
Abdullah, Aslam
core   +4 more sources

An analytical turbulence modeling based on the double-Lagrangian formalism

open access: yesJournal of Fluid Science and Technology, 2019
An analytical approach to turbulence modeling based on the double-Lagrangian formalism is applied to turbulence modeling. Extending a selfconsistent closure theory of homogeneous turbulence, current approach allows us to derive a quadratic nonlinear ...
Taketo ARIKI
doaj   +1 more source

Investigation of Turbulence Modeling for Point-Absorber-Type Wave Energy Converters

open access: yesEnergies, 2020
Reviewing the literature of CFD-based numerical wave tanks for wave energy applications, it can be observed that different flow conditions and different turbulence models are applied during numerical wave energy converter (WEC) experiments.
Christian Windt   +2 more
doaj   +1 more source

Turbulence models for simulation and modeling in textile engineering

open access: yes, 2021
Turbulence accounts for most of the processes in textile engineering among other interdisciplinary fields. In this chapter, a comprehensive description of turbulent models and description of important terms and theories in modeling and simulation have ...
Nicholus Tayari Akankwasa   +3 more
core   +1 more source

Turbulence modulation of the upward turbulent bubbly flow in vertical ducts

open access: yesNuclear Engineering and Technology, 2015
The present paper aims at improving the modeling of turbulence for the upward turbulent bubbly flow through the use of experimental databases that contain data on small and large vertical ducts.
Hongna Zhang   +2 more
doaj   +1 more source

Numerical Study of Velocity and Mixture Fraction Fields in a Turbulent Non-Reacting Propane Jet Flow Issuing into Parallel Co-Flowing Air in Isothermal Condition through OpenFOAM

open access: yesAppliedMath, 2023
This research employs computational methods to analyze the velocity and mixture fraction distributions of a non-reacting Propane jet flow that is discharged into parallel co-flowing air under iso-thermal conditions.
Abdolreza Aghajanpour   +1 more
doaj   +1 more source

Quasi-analytical solutions of a turbulence-modeling equation on the robustness of decaying homogeneous turbulence

open access: yesAdvances in Mechanical Engineering, 2020
The present study introduces third-order quasi-analytical solutions of a turbulence-modeling equation, where the standard k − ϵ model equation is used because this model is commonly and widely used in engineering applications.
Hiroki Suzuki   +2 more
doaj   +1 more source

Water Entry of a Heated Axisymmetric Vertical Cylinder

open access: yesEnergies, 2023
The computational model that is able to estimate the temperature distribution inside a solid specimen during the film boiling phase of immersion quenching (water entry) process has been presented in this paper.
Alen Cukrov   +4 more
doaj   +1 more source

Progress in Phenomenological Modeling of Turbulence Damping around a Two-Phase Interface

open access: yesFluids, 2019
The presence of a moving interface in two-phase flows challenges the accurate computational fluid dynamics (CFD) modeling, especially when the flow is turbulent.
Wenyuan Fan, Henryk Anglart
doaj   +1 more source

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