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
Statistical calibration of cfd modelling for street canyon flows
TL;DR: In this article, the model sensitivity to the empirical constants contained within the κ-e turbulence model and examine how a systematic variation of these values could produce improved prediction of the turbulent kinetic energy when compared against wind tunnel data.
Journal ArticleDOI
Assessment using CFD of the wind direction on the air discharges caused by natural ventilation of a poultry house
Fernando Rojano,Pierre-Emmanuel Bournet,Melynda Hassouna,Paul Robin,Murat Kacira,Christopher Y. Choi +5 more
TL;DR: This study investigates air discharges caused by natural ventilation of a poultry house by means of a three-dimensional computational fluid dynamics (CFD) model, which solves the governing equations of momentum, heat and mass transport, radiative transfers and animal-generated heat.
Journal ArticleDOI
Analysis of influencing factors on suction capacity in seabed natural gas hydrate by cutter-suction exploitation
TL;DR: In this article, the authors analyzed the effects of cutter-suction flow, cutter-head rotating speed, cutting depth and suction port position on the capacity of the working head in the deep-sea working environment.
Journal ArticleDOI
Uncertainty quantification of upstream wind effects on single-sided ventilation in a building using generalized polynomial chaos method
TL;DR: In this article, the effects of the upstream uncertainties on the ventilation rate in a building were investigated using RANS simulations and generalized polynomial chaos-based uncertainty quantification analysis.
Journal ArticleDOI
Research on the Power Capture and Wake Characteristics of a Wind Turbine Based on a Modified Actuator Line Model
TL;DR: In this paper , a modified actuator line model with blade tips, root loss, and an airfoil three-dimensional delayed stall was revised and applied and validated based on an analysis of wind turbine wakes in wind farms.
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.