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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Journal ArticleDOI
The Effect of Windscreens and Walkways on Air-Cooled Condenser Performance and Fan Blade Dynamic Loading
Journal ArticleDOI
Developing a process-oriented approach towards Positive Energy Blocks: the wind-analysis contribution
TL;DR: In this article, a case study, involving three public school buildings located in three different urban patterns in Rome, illustrates a preliminary step in developing an integrated platform to orient strategic design solutions towards PEBs.
Journal ArticleDOI
Numerical Study on Physical Mechanisms of Forced Dispersion for an Effective LNG Spill Mitigation
TL;DR: In this article, the authors apply LNG forced dispersion modeling to study the physical mechanisms involved in enhancing vapor dispersion, and examine the effects of momentum imparting from the droplets to the air-vapor mixture, the thermal transfer between the two phases (droplet/vapor), and various air entrainment rates on the behavior of the LNG vapor.
Journal ArticleDOI
Transient simulation of an atmospheric boundary layer flow past a heliostat using the Scale-Adaptive Simulation turbulence model
TL;DR: In this paper, the scale-adaptive simulation (SAS) turbulence model is employed as it is computationally more affordable than a Detached Eddy Simulation (DES) approach, which would require a higher grid resolution and a reduced time step size.
Proceedings ArticleDOI
Investigation of Opening Positions on the Natural Ventilation in a Low-Rise Building by CFD Analysis
Sherzad Hawendi,Shian Gao +1 more
TL;DR: In this article, a three dimensional computational fluid dynamics (CFD) simulation of coupled outdoor wind flow and indoor air flow is presented to investigate the effective parameters on cross ventilation and flow patterns inside an isolated house.
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.
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.