Journal ArticleDOI
Appropriate boundary conditions for computational wind engineering models using the k-ϵ turbulence model
Peter Richards,R.P. Hoxey +1 more
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In this paper, velocity and turbulence profiles associated with the k-ϵ turbulence model are proposed which produce homogeneous conditions, and the cospectrum for the Reynolds stress exhibits a characteristics frequency n o ≈ u ∗ / z which is consistent with the suggested profile equations.About:
This article is published in Journal of Wind Engineering and Industrial Aerodynamics.The article was published on 1993-08-01. It has received 1044 citations till now. The article focuses on the topics: K-omega turbulence model & K-epsilon turbulence model.read more
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Improved finite volume discretisations of entropy generation and turbulence production
TL;DR: In this paper, a new discretisation of turbulence production and entropy generation is derived that are based on derivatives centred at cell faces, which do not display the erroneous behaviours of the cell centre discretisations.
Journal ArticleDOI
The Atmospheric Boundary Layer Above Generic Hills: Computational Model of a Unidirectional Body Force-Driven Flow
TL;DR: In this paper, a steady Reynolds-averaged Navier-Stokes model is developed for a neutrally-stratified unidirectional flow in the atmospheric boundary layer (ABL) over generic two-dimensional cosine-shaped hills.
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Integral Multiphase Turbulence Compressible Jet Expansion Model for Accidental Releases from Pressurized Containments
TL;DR: An integral multiphase compressible jet expansion model which for the first time accounts for turbulence generation is presented in this article, where real fluid behavior is accounted for applying a suitable equation of state.
Test of two different schemes through CFD to include heat and mass transfer induced by animals inside a broiler house
Fernando Rojano,Pierre-Emmanuel Bournet,Melynda Hassouna,Paul Robin,Murat Kacira,Christopher Y. Choi +5 more
TL;DR: In this paper, the authors developed an improved CFD model that could be used for predicting the climate dynamics in animal housing aiding to find the minimum energy required in the operation of equipment for climate control.
References
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Journal ArticleDOI
The numerical computation of turbulent flows
Brian Launder,D. B. Spalding +1 more
TL;DR: In this paper, the authors present a review of the applicability and applicability of numerical predictions of turbulent flow, and advocate that computational economy, range of applicability, and physical realism are best served by turbulence models in which the magnitudes of two turbulence quantities, the turbulence kinetic energy k and its dissipation rate ϵ, are calculated from transport equations solved simultaneously with those governing the mean flow behaviour.
Characteristics of turbulence in a boundary layer with zero pressure gradient
TL;DR: In this article, the results of an experimental investigation of a turbulent boundary layer with zero pressure gradient are presented and the importance of the region near the wall and the inadequacy of the concept of local isotropy are demonstrated.
Neutrally stratified boundary-layer flow over roughness changes and topography
TL;DR: In this paper, a linear model for neutral surface-layer flow over complex terrain is presented, which makes it possible to make high-resolution computations for an arbitrary distribution of surface roughness and topography.
Journal ArticleDOI
A mixed spectral finite-difference model for neutrally stratified boundary-layer flow over roughness changes and topography
TL;DR: In this paper, a linear model for neutral surface-layer flow over complex terrain is presented, which combines the simplicity and computational efficiency of linear methods with flexibility for closure schemes of finite-difference methods.
Journal ArticleDOI
Simulation of Effect of Wind Barriers on Airflow
TL;DR: In this article, the authors developed a quantitative, theoretical simulation of airflow normal to narrow wind barriers of various porosities and, when possible, verify the results using experimental data, using finite difference methods having a combination of upwind and central difference schemes.