Informations et ressources scientifiques
sur le développement des zones arides et semi-arides

Accueil du site → Doctorat → Royaume-Uni → 2005 → Airflow behaviour around tensile fabric membrane skins in hot arid regions

University of Nottingham (2005)

Airflow behaviour around tensile fabric membrane skins in hot arid regions

Elnokaly, Amira Medhat H.

Titre : Airflow behaviour around tensile fabric membrane skins in hot arid regions

Auteur : Elnokaly, Amira Medhat H.

Université de soutenance : University of Nottingham

Grade : Doctor of Philosophy (Ph.D.) : 2005

Résumé
The thesis reviews the use of TMS as climatic modifiers and the previous attempts to investigate the thermal performance of spaces enclosed by them. The relevant principles of the form and topology of TMS and how these can affect the environmental behaviour in the enclosed or semi-enclosed space are discussed and this informs a review of case studies. The case study buildings are reviewed in terms of their environmental behaviour focusing on cases where the topology and the form of the structure were designed to modify the airflow behaviour over the structure and the ventilation rate within the enclosed or semi-enclosed space. The main part of the project involved a parametric study of the airflow behaviour of conical TMS with different geometrical configurations and orientations, using 1:20 scale models in an environmental wind tunnel. The results of this experimental investigation were compared with results from investigations carried out in computational fluid dynamics software "FLUENT 5.5" on 1:20 and 1:1 models. The comparison showed that the CFD modelling was able to replicate much of the behaviour observed in the wind tunnel and the approach was extended to explore arrays of conical TMS. For both single conical TMS and TMS arrays, configurations were identified that could yield local increases in air speed. The thesis concludes with a discussion of how the form and geometrical configuration affect the airflow behaviour and hence the thermal comfort level of the occupants of the semi-enclosed space. It is believed that the research undertaken in this thesis has progressed the understanding of the airflow behaviour in the vicinity of conical TMS, which is considered to be novel contribution to the architectural knowledge and the understanding of this class of structure when applied to hot-arid climates.

Accès au document : Proquest Dissertations & Theses

Page publiée le 5 juin 2009, mise à jour le 6 novembre 2018