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Previous issue date: 2003-07-21 / This work analyses a study on natural ventilation and its relation to the urban legislation versus the building types in an urban fraction of coastal area of Praia do Meio in the city of Natal/RN, approaching the type or types of land use most appropriate to this limited urban fraction. The objective of this study is to analyse the effects of the present legislation as well as the types of buildings in this area on the natural ventilation. This urban fraction was selected because it is one of the sites from where the wind flows into the city of Natal. This research is based on the hypothesis stating that the reduction on the porosity of the urban soil (decrease in the set back/boundary clearance), and an increase in the form (height of the buildings) rise the level of the ventilation gradient, consequently causing a reduction on the wind speed at the lowest part of the buildings. Three-dimensional computational models were used to produce the modes of occupation allowed in the urban fraction within the area under study. A Computational Fluid Dynamics (CFD) software was also used to analyse the modes of land occupation. Following simulation, a statistical assessment was carried out for validation of the hypothesis. It was concluded that the reduction in the soil porosity as a consequence of the rates that defined the minimum boundary clearance between the building and the boundary of the plot (and consequently the set back), as well as the increase in the building form (height of the buildings) caused a reduction in the wind speed, thus creating heat islands / Analisa um estudo da ventila??o natural e sua rela??o com as prescri??es urban?sticas x tipologia edil?cia numa fra??o urbana da Orla da Praia do Meio em Natal/RN, abordando qual ou quais usos mais se adequam ? fra??o urbana delimitada. Tem como objetivo analisar os efeitos das normas e das tipologias edil?cias sobre a ventila??o natural. A fra??o urbana foi escolhida por ser uma das ?reas de entrada dos ventos em Natal/RN. A pesquisa parte da hip?tese de que a redu??o da porosidade da malha urbana (diminui??o dos recuos) e o aumento do gabarito (altura das edifica??es), elevam o n?vel do gradiente de ventila??o, reduzindo conseq?entemente a velocidade dos ventos nas camadas mais baixas das edifica??es. A abordagem foi desenvolvida atrav?s de modelos computacionais tridimensionais, produzindo os modos de ocupa??o permitidos na fra??o urbana da ?rea de estudo, submetidos posteriormente ? an?lise computacional em software de Mec?nica de Fluidos. Ap?s simula??o, realizou-se avalia??o estat?stica, para valida??o das hip?teses. Concluiu-se que a diminui??o da porosidade em conseq??ncia da redu??o dos ?ndices que definem os afastamentos m?nimos (recuos) entre o edif?cio e o limite do lote (e conseq?entemente entre os edif?cios), e o aumento do gabarito das edifica??es (altura da edifica??o) reduziram a velocidade dos ventos, possibilitando assim a forma??o de ilhas de calor
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/12297 |
| Date | 21 July 2003 |
| Creators | Marques, Ricardo Souza |
| Contributors | CPF:14087979415, http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4783186Y7, Tinoco, Marcelo Bezerra de Melo, CPF:41385039434, http://lattes.cnpq.br/8060203177958046, Silva, Francisco de Assis Gon?alves da, CPF:08424195434, http://lattes.cnpq.br/9640410295256597, Ara?jo, Virg?nia Maria Dantas de |
| Publisher | Universidade Federal do Rio Grande do Norte, Programa de P?s-Gradua??o em Arquitetura e Urbanismo, UFRN, BR, Conforto no Ambiente Constru?do; Forma Urbana e Habita??o |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Format | application/pdf |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
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