Natural Ventilation Optimisation of Liverstock Buildings by Numerical Simulations
Optimizacija prirodne ventilacije poljoprivrednih objekata numeričkim simulacijama
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Author
Ecim, Olivera
Stamenov, Vasil
Todorovic, Marija
Topisirovic, Goran
Keywords
energy efficiencynatural ventilation
numerical simulations
multimodel simulation
low pressure difference sensors
energetska efikasnost
prirodna ventilacija
numeričke simulacije
višemodelske simulacije
davači za male razlike pritiska
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Show full item recordAbstract
Numerical simulations and computational fluid dynamics can be usefully
integrated with architectural modeling, providing designers with a powerful single CFD
based architectural modeling and design framework. This framework can be interfaced
with the building thermal performance modeling, integrating further fully thermal and
flow domains within the architectural modeling. CFD analysis is generally restricted to
the building’s environment flows or indoor single rooms and spaces flows study, and the
designer must supply boundary conditions in the form of external and internal building’s
envelope/wall surface conditions. In the case of natural and mixed ventilation, this
presents a fundamental problem as the outdoor and indoor boundary conditions are
dynamic, inter-related and interactive via building’s architecture and in addition are
dependent on external weather conditions and indoor environment control/related heat
gains. Therefore, in this study both sides’ boundary conditions are dynamically
described, and integrated CFD, BPS and architectural modeling, as a unique framework
– new design method, are developed, leading to natural and mixed ventilation energy
efficiency optimization. In addition to the presented method, paper gives results of its
implementation in designing the building complex in Belgrade. Finally, needs for further
research and engineering development are outlined. U radu je dat metod optimizacije prirodne ventilacije u cilju smanjenja
potrošnje energije i povećanja energetske efikasnosti, odnosno poboljšanja uslova
ugodnosti u objektu. Metod optimizacije uključuje ispitivanje trodimenzionog strujnog i
temperaturnog polja numeričkim simulacijama. Ispitivanja simulacijama se sprovode za
definisan referentni model okolnih objekata u širem kompleksu posmatranog objekta
obuhvatajući sve merodavne prepreke strujanju iz pojedinih pravaca ruže vetrova, i
definisan referentni model samog objekta. Na osnovu ovako dobijene strujne slike
i definisane prepreke vazdušnoj struji za različite orijentacije pravca vetra, se potom
definišu unapređeni modeli i korigovani ulazni podaci za preciznije određivanje i
složenije strujne slike oko i unutar objekta.