Forecasting roof snow accumulation using numerical models

Peer reviewed: YesNRC publication: Ye

Dynamic evaluation of roofing systems using numerical models - an introduction

Peer reviewed: YesNRC publication: Ye

Application of Numerical Models for the Dynamic Evaluation of Roofing Systems. Part 1: Review of the State-of-the-Art

This report's objective is to present the state-of-the-art on the application of the numerical models forthe dynamic evaluation of the roofing systems. This systematic review summarizes the findings of thepast research activities along with their limitations. As well, it also recommends future research areas inthe dynamic modeling of both the driving force and roofing system response. A bibliography is appendedclassifiylng the articles in this research area into four groups; driving forces, roofing systems, membraneand attachment systems. A second report, "Application of Numerical Models for the Dynamic Evaluationof Roofing Systems - Part 2: Present Focus: will document the present modeling methodologies alongwith limited preliminary findings.Ce rapport a pour objectif de pr\ue9senter l?\ue9tat actuel des r\ue9alisations dans le domaine de l?application des mod\ue8les num\ue9riques \ue0 l?\ue9valuation dynamique des syst\ue8mes de couverture. Cet examen syst\ue9matique r\ue9sume les conclusions des activit\ue9s de recherche ant\ue9rieures ainsi que leurs limites. De m\ueame, on y identifie \ue9galement des aires de recherche futures rattach\ue9es \ue0 la mod\ue9lisation dynamique de la force de pouss\ue9e et de la r\ue9ponse du syst\ue8me de couverture. Une bibliographie est annex\ue9e, laquelle classifie les articles parus dans ce domaine de recherche en quatre (4) groupes distincts: forces de pouss\ue9e; syst\ue8mes de couverture; membranes; syst\ue8mes de fixation. Un second rapport, Application of Numerical Models for the Dynamic Evaluation of Roofing Systems - Part 2: Present Focus, documentera les m\ue9thodologies de mod\ue9lisation actuelles ainsi que les conclusions pr\ue9liminaires limit\ue9es.Peer reviewed: NoNRC publication: Ye

Numerical simulation of air flow with different roof configurations for the prediction of snow accumulation

Applying Computational Fluid Dynamics (CFD) technique, numerical investigationshave been carried out to simulate wind flow conditions on various roof configurations. Usingthe computed mean wind flow field, the snow-drift distributions on these roof configurationsare calculated. This study demonstrates that the CFD technique can be effectively applied inthe earty stage of the design process as a predictive tool for forecasting snow accumulationon various roof configurations. Efforts are also made to quantify the validity of modelpredictions through comparisons with field observation and wind tunnel data.Peer reviewed: YesNRC publication: Ye

CFD investigations of venting systems for pollutant dispersion

This paper presents and discusses the numerically computed results for nine different ventingconfigurations. A ranking criteria has been developed to offer an optimum design conditionbased on computed results for the nine studied configurations. Recommendations are madebased on the system efficiency in ventilating the hydrogen gas.Peer reviewed: YesNRC publication: Ye