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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CFD modelling of air quality in Pamplona City (Spain): Assessment, stations spatial representativeness and health impacts valuation.
Esther Rivas,Jose Luis Santiago,Yolanda Lechón,Fernando Martín,Arturo H. Ariño,Juan José Pons,Jesús Miguel Santamaría +6 more
TL;DR: The resulting air pollution maps provided information critical for studying the traffic-related health effects of NO2 and their associated external costs in the city of Pamplona and the spatial representativeness of the current network of air quality monitoring stations.
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Coupled CFD, radiation and porous media transport model for evaluating evaporative cooling in an urban environment
Saba Saneinejad,Peter Moonen,Peter Moonen,Thijs Defraeye,Dominique Derome,Jan Carmeliet,Jan Carmeliet +6 more
TL;DR: In this article, a coupled model for determining convective heat and mass exchanges between canyon walls and the air is proposed to study the effect of evaporative cooling on the temperature conditions in an urban street canyon.
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Improving the CFD modelling of cross-ventilation in highly-packed urban areas
TL;DR: In this paper, a series of experimentally validated CFD simulations were conducted for a group of buildings, which were arranged in regular and staggered orders with different urban area densities.
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A computational fluid dynamic modelling approach to assess the representativeness of urban monitoring stations.
TL;DR: A methodology based on a set of computational fluid dynamics simulations based on Reynolds-Averaged Navier-Stokes equations (RANS-CFD) for different meteorological conditions covering several months is developed in order to analyse the spatial representativeness of urban monitoring stations and to complement their measured concentrations.
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An analytical review on the evaluation of wind resource and wind turbine for urban application: Prospect and challenges
Zinat Tasneem,Abdullah Al Noman,Sajal K. Das,Dip Kumar Saha,Md. Robiul Islam,Md. Firoj Ali,Md. Faisal R. Badal,Md. Hafiz Ahamed,Sumaya I. Moyeen,Firoz Alam +9 more
TL;DR: In this article, the authors highlight the present status of urban wind farm technology and its commercial and environmental aspects and conclude that further investigation of wind mapping and the suitable design of turbines is essential to make the urban wind farms a reliable and feasible option for decentralized power generation.
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.
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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.