Journal ArticleDOI
A zero-equation turbulence model for indoor airflow simulation
Qingyan Chen,Weiran Xu +1 more
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TLDR
In this article, a zero-equation model is proposed to simulate three dimensional distributions of air velocity, temperature, and contaminant concentrations in rooms, assuming turbulent viscosity to be a function of length-scale and local mean velocity.About:
This article is published in Energy and Buildings.The article was published on 1998-10-01. It has received 323 citations till now. The article focuses on the topics: Combined forced and natural convection & Airflow.read more
Citations
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Journal ArticleDOI
Evaluation of Various Turbulence Models in Predicting Airflow and Turbulence in Enclosed Environments by CFD: Part 2—Comparison with Experimental Data from Literature
TL;DR: In this paper, the authors evaluated the performance of eight turbulence models, potentially suitable for indoor airflow, in terms of accuracy and computing cost, including Reynolds averaged Navier-Stokes (RANS) modeling, hybrid RANS and largeeddy simulation (or detached-eddy simulation [DES]).
Journal ArticleDOI
Evaluation of Various Turbulence Models in Predicting Airflow and Turbulence in Enclosed Environments by CFD: Part 1—Summary of Prevalent Turbulence Models
TL;DR: In this article, the authors summarized recent progress in CFD turbulence modeling and its application to some practical indoor environment studies and identified a few turbulence models that show great potential for modeling airflows in enclosed environments.
Journal ArticleDOI
On approaches to couple energy simulation and computational fluid dynamics programs
TL;DR: Some efficient approaches to integrate ES andCFD, such as static and dynamic coupling strategies, are described in order to bridge the discontinuities of time-scale, spatial resolution and computing speed between ES and CFD programs.
Dissertation
The adaptive coupling of heat and air flow modelling within dynamic whole-building simulation
TL;DR: The author’s website is www.esp-r.org, and the website of the ESP-r Foundation, a not-for-profit organisation dedicated to supporting and promoting the development of Simulation Methodology and Ethics.
Journal ArticleDOI
Comfort Climate Evaluation with Thermal Manikin Methods and Computer Simulation Models
Håkan Nilsson,Ingvar Holmér +1 more
TL;DR: Whether Computational Fluid Dynamics calculations and measurements with a thermal manikin are able to predict the perceived thermal climate is investigated to enable engineers to make better predictions and early decisions in the design and construction process.
References
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Book
Numerical heat transfer and fluid flow
TL;DR: In this article, the authors focus on heat and mass transfer, fluid flow, chemical reaction, and other related processes that occur in engineering equipment, the natural environment, and living organisms.
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.
Book
Turbulence modeling for CFD
TL;DR: In this paper, the authors proposed a compressible ecoulement for compressible ECCs, based on the disquette reference record created on 2005-11-18, modified on 2016-08-08.
Proceedings ArticleDOI
Thin-layer approximation and algebraic model for separated turbulent flows
B. Baldwin,H. Lomax +1 more
TL;DR: In this article, an algebraic turbulence model for two-and three-dimensional separated flows is specified that avoids the necessity for finding the edge of the boundary layer, and compared with experiment for an incident shock on a flat plate, separated flow over a compression corner, and transonic flow over an airfoil.
Journal ArticleDOI
On Turbulent Flow Near a Wall
TL;DR: In this paper, the authors defined the distance from wall pipe radius pipe diameter mean local velocity parallel to wall velocity fluctuations parallel and normal to flow mass density coefficient of viscosity shear stress velocity correlation coefficient mixing length universal constant in I = Ky modified universal constant eddy viscosities size of roughness friction factor = 8rw/p V 2