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
An Empirically-Based Assessment of CFD Utility In Urban-Level Air Flow Studies
Rukiye Çetin,Ardeshir Mahdavi +1 more
TL;DR: In this paper, the results of a systematic effort to generate urban segment CFD models, conduct simulations to compute key variables of the air flow field, and compare the simulation results with measurements.
Journal ArticleDOI
Calculation of Gas Parameters at the Exit from a Gas Vent Stack by Means of Calculating Duration of Emptying of the Processing Equipment
TL;DR: In this article, the parameters and conditions of discharging a hazardous gas through a vertical gas vent stack at the critical and subcritical gas outflow conditions in the form of functions of time are described.
On the relative importance of vegetation terms in computational fluid dynamics on flow and Dispersion in the urban environment
TL;DR: In this article, the relative importance of vegetation terms for flow and dispersion in an urban street canyon with avenue-trees was analyzed for simulation with three k-e turbulence models and different approaches to model vegetation.
Computational modelling of convective heat and moisture transfer at exterior building surfaces
TL;DR: In this article, the convective heat and moisture transfer (H&MT) at the windward wall of a 2D (infinitely long) square-shaped building is evaluated after a rain shower.
Journal ArticleDOI
Influence of the atmospheric boundary layer stability on aerial spraying studied by computational fluid dynamics
TL;DR: In this article , a large spatiotemporal aerial application simulation model was constructed using different atmospheric boundary layer (ABL) stabilities, including unstable, stable, and neutral.
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.