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master's thesis
Opterećenje vjetrom na visokim zgradama s poroznim dvostrukim pročeljima
Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2022. urn:nbn:hr:235:126568
Melnjak, Petar
University of Zagreb
Faculty of Mechanical Engineering and Naval Architecture

Institutional repository: Repository of Faculty of Mechanical Engineering and Naval Architecture University of Zagreb

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Melnjak, P. (2022). Opterećenje vjetrom na visokim zgradama s poroznim dvostrukim pročeljima (Master's thesis). Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:235:126568

Melnjak, Petar. "Opterećenje vjetrom na visokim zgradama s poroznim dvostrukim pročeljima." Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2022. https://urn.nsk.hr/urn:nbn:hr:235:126568

Melnjak, Petar. "Opterećenje vjetrom na visokim zgradama s poroznim dvostrukim pročeljima." Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2022. https://urn.nsk.hr/urn:nbn:hr:235:126568

Melnjak, P. (2022). 'Opterećenje vjetrom na visokim zgradama s poroznim dvostrukim pročeljima', Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, accessed 26 November 2024, https://urn.nsk.hr/urn:nbn:hr:235:126568

Melnjak P. Opterećenje vjetrom na visokim zgradama s poroznim dvostrukim pročeljima [Master's thesis]. Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture; 2022 [cited 2024 November 26] Available at: https://urn.nsk.hr/urn:nbn:hr:235:126568

P. Melnjak, "Opterećenje vjetrom na visokim zgradama s poroznim dvostrukim pročeljima", Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, 2022. Available at: https://urn.nsk.hr/urn:nbn:hr:235:126568

Metadata
TitleOpterećenje vjetrom na visokim zgradama s poroznim dvostrukim pročeljima
Title (english)Wind loads on tall buildings with porous double-skin façades
AuthorPetar Melnjak
MentorHrvoje Kozmar (mentor)
MentorGianni Bartoli (komentor)
VIAF: 78208513
Committee memberHrvoje Jasak (predsjednik povjerenstva)
Committee memberVladimir Soldo (član povjerenstva)
Committee memberZvonimir Guzović (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Mechanical Engineering and Naval Architecture
Zagreb
Defense date and country2022-04-01, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Mechanical Engineering
Precision Mechanical Engineering
Abstract
Primjena sustava poroznog dvostrukog pročelja (PDP) je česta u izgradnji zgrada s visokom energetskom učikovitosti. PDP sustav se sastoji od unutarnjeg nepropusnog pročelja i vanjskog propusnog pročelja. Mali razmak između dvaju pročelja omogućuje vjetru da struji između njih. U sklopu ovog rada su proučavana aerodinamička svojstva zgrada opremljenih PDP sustavima različitih poroznosti, pri čemu su zgrade smještene u urbanom okruženju. Eksperimenti su provedeni u zračnom tunelu za generiranje modela atmosferskog graničnog sloja u istraživačkom centru za aerodinamiku zgrada i inženjerstvo vjetra (CRIACIV) na Sveučilištu u Firenci, Italija. Značajke strujanja su određene korištenjem Pitotovih cijevi i užarene žice. Aerodionamička opterećenja i površinski tlak na modelu zgrade su izmjereni visokofrekventnom vagom i osjetnicima tlaka na unutarnjem nepropusnom pročelju modela zgrade. Pokazano je da PDP sustav na zgradi u urbanom okruženju ne utječe na aerodinamičke koeficijente momenta poprečno i uzduž smjera strujanja, dok s druge strane ima negativan učinak na spektralnu gustoću pulzacija aerodinamičkog momenta u poprečnom smjeru s obzirom na smjer strujanja vjetra, jer su vršne vrijednosti uvećane. PDP sustav uzorkuje smanjenje srednjih i vršnih vrijednosti koeficijenta tlaka na cijeloj površini zgrade kao i standardne devijacije pulzacija površinskog tlaka.
Abstract (english)
Porous double-skin façade (PDSF) systems have become common in high-performance buildings. A PDSF system consists of an inner impermeable façade and an outer permeable façade. A small gap between the two skins enables the wind flow. The aerodynamic characteristics of buildings equipped with PDSF systems of various porosities were studied in an urban environment. Experiments were conducted in a boundary layer wind tunnel (BLWT) at the Inter-University Research Centre on Building Aerodynamics and Wind Engineering (CRIACIV) at the University of Florence, Italy. Flow characteristics were determined using Pitot tubes and hot-wire anemometry system. Aerodynamic loads and surface pressures acting on the building model were measured using a high-frequency force balance (HFFB) and pressure taps on the inner skin of the building model, respectively. The results indicate that the PDSF system on a building in an urban environment does not affect the across-wind and along-wind moment coefficients, while the PDSF system exhibits a slightly negative effect on the power spectral density of the across-wind moment because the peak values are greater. Furthermore, the PDSF system proved to diminish the mean pressure coefficient peak and mean values on all building surfaces as well as the standard deviation of surface pressure fluctuations.
Keywords
Keywords (english)
Languageenglish
URN:NBNurn:nbn:hr:235:126568
Study programmeTitle: Mechanical Engineering
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka strojarstva (magistar/magistra inženjer/inženjerka strojarstva)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Embargo expiration date: 2024-04-05
Terms of useLicence Attribution-ShareAlike 4.0 International (CC BY-SA 4.0) icon
Created on2022-04-05 10:50:57