Journal ArticleDOI
Appropriate boundary conditions for computational wind engineering models using the k-ϵ turbulence model
Peter Richards,R.P. Hoxey +1 more
Reads0
Chats0
TLDR
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
Citations
More filters
Journal ArticleDOI
Numerical study of wind loads on a low-rise pitched roof building with spirelet
TL;DR: In this paper, an analysis of flow in a low-rise pitched roofed medieval church with a spirelet was carried out using computational fluid dynamics, which revealed that lifting up of roof tiles is due to the presence of a localised low pressure and swirling turbulent flow near the spirelets.
Proceedings ArticleDOI
k − ε (epsilon) Simulations of the neutral ABL : achieving horizontal homogeneity on practical grids
Jonathon Sumner,Christian Masson +1 more
TL;DR: In this paper, it is shown that by applying discretization schemes inspired by the analytical solution for flow in the idealized neutral surface layer combined with the Richards and Hoxey boundary conditions, truly invariant properties can be obtained on relatively coarse grids.
Journal ArticleDOI
Performance evaluation of air flow and thermal comfort in the room with Wind-Catcher using different CFD techniques under neutral Atmospheric Boundary Layer
TL;DR: In this article, the authors investigated the airflow and thermal comfort analyses of existing common wind catcher design in the city of Yazd using computational fluid dynamics (CFD) technique and neutral homogenous atmospheric boundary layer (ABL) was created at the inlet.
Dissertation
Modelling and thermal optimization of traditional housing in a hot arid area
Murad Khan,Hayder Mirza Majeed +1 more
TL;DR: In this paper, the authors studied the use of night ventilation as a passive cooling strategy for a traditional courtyard house in a hot dry climate, using weather data for Baghdad, and found that building elements can change the performance to various degrees, that the airflow patterns inside the rooms change from day to night and that the thermal conditions during the day depend more on the intensity of solar radiation than other factors.
Journal ArticleDOI
RANS simulations of terrain-disrupted turbulent airflow at Hong Kong International Airport
TL;DR: This study numerically simulate the turbulent airflow over Lantau Island and HKIA using OpenFOAM, an open-source platform for computational fluid dynamics, and finds that it is primarily the southerly and southeasterly winds that are the most conducive to windshear.
References
More filters
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.