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
Incident wind angle and topographic steering through excavated foredune notches
TL;DR: In this paper, the authors examined the relationship between the relative incident wind approach angle, topographic steering and flow acceleration through an excavated foredune notch located at St Kilda, New Zealand.
Journal ArticleDOI
Influence of atmospheric conditions on measured infrasound from wind turbines
TL;DR: In this paper , an artificial neural network (ANN) model was developed based on the measurement data, which was able to adequately predict both blade passing frequency levels and broadband infrasonic noise.
Journal ArticleDOI
Rain sheltering analysis in semi-outdoor environments: case study on passenger comfort in a railway station shelter
TL;DR: In this article, the wind-driven rain (WDR) sheltering for a prototype of a small railway station shelter designed for rural areas is studied and a new metric called "wetting ratio" is proposed, which allows for quantitative analysis of wetting due to rain within a volume in the air.
Journal ArticleDOI
Computational fluid dynamics analysis of the pump parameters in the helical flow pump
Kyohei Hosoda,Kohei Ishii,Takashi Isoyama,Itsuro Saito,Yusuke Inoue,Kouki Ariyoshi,Toshiya Ono,Hidemoto Nakagawa,Kou Imachi,Hiroshi Kumagai,Yusuke Abe +10 more
TL;DR: The characteristics of the pump parameters in the HFP could be approximately clarified and the best proportion for the vane was considered to be a vane height between 1.5 and 2 times the vanes width.
Journal ArticleDOI
Validation Process for Rooftop Wind Regime CFD Model in Complex Urban Environment Using an Experimental Measurement Campaign
Sarah Jamal Mattar,Mohammad Reza Kavian Nezhad,Michael Versteege,Carlos F. Lange,Brian A. Fleck +4 more
TL;DR: In this article, the authors presented a validation methodology for computational fluid dynamics (CFD) assessments of rooftop wind regime in urban environments, where two methods of standard deviation (SDM) and average (AM) were introduced to compare the numerical results with the corresponding measurements.
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.