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
On the domain size for the steady-state CFD modelling of a tall building
TL;DR: In this article, the effects of changing the domain size around a tall building were investigated using the RNG k-e turbulence model, where the only parameter varied is the domain length, with the mesh resolution left unchanged.
Journal ArticleDOI
Simulations of local heat islands in Zürich with coupled CFD and building energy models
TL;DR: In this article, the effect of new buildings on the local urban microclimate for a building site in Zurich (Switzerland) was investigated. And the results showed that the formation of local hot spots strongly depend on the building geometries, building materials, the strength of buoyancy and the wind directions and wind speeds.
Journal ArticleDOI
Comparison of calculation models for wind-driven rain deposition on building facades
TL;DR: In this article, the authors compared the performance of the semi-empirical model in the ISO standard for WDR assessment (ISO), the semiEM model by Straube and Burnett (SB) and the CFD model by Choi.
Journal ArticleDOI
Validation and optimization of SST k-ω turbulence model for pollutant dispersion within a building array
TL;DR: In this article, the authors report and quantitatively validate the shear stress transport (SST) k-ω turbulence closure model and its transitional variant for pollutant dispersion under complex urban environment.
Journal ArticleDOI
The use of permeable and reflective pavements as a potential strategy for urban heat island mitigation
TL;DR: In this article, the impact of reflective and permeable pavements on the urban microclimate is investigated by means of a fully-integrated urban micro-climate model, which couples four submodels: (i) a Computational Fluid Dynamics (CFD) model, (ii) a Building-Envelope, Heat-Air-Moisture (BE-HAM) model which solves for heat and moisture transport in porous building materials, (iii) a radiation model which computes the radiative heat exchange between urban surfaces and the sky, and (iv) a
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.