Numerical study on airflow in an office room with grill and square ceiling diffusers
Other Title(s)
دراسة عددية لحركة الهواء داخل مكتب بواسطة ناشر جانبي و ناشر سقفي
Dissertant
al-Asadi, Abd al-Amir Hamid Muhammad
Thesis advisor
Comitee Members
Raghib, Abd al-Muhsin A.
al-Bahadilly, Sadun F.
al-Abbasi, Sajid H. Ali
University
University of Basrah
Faculty
Engineering College
Department
Department of Mechanical Engineering
University Country
Iraq
Degree
Master
Degree Date
2012
English Abstract
The objective of this work is to compare two types of diffusers and to know which one is most appropriate for thermal comfort and indoor air quality with an office room. In this work, two types of diffusers are used: grill diffuser and square ceiling diffuser to study the effect each type on Air Diffusion Performance Index (ADPI) and then on thermal comfort.
In order to do this the following parameter are changed: the number of inlet, the locations of inlet, the number of outlet, the locations of outlet and supply airflow rate and supply air temperature to verify the case of suitable ADPI that most appropriate for thermal comfort and indoor air quality.
A numerical study of the continuity, the momentum and the energy equations together with the two equations of the RNG k-ɛ turbulence model is performed by using finite volumes method to transfer these equations from differential forms to algebraic forms which can be solved according to the SIMPLEC algorithm procedure.
A 3D developing flow was solved using CFD software FLUENT 6.3. At the first, IEA standard test room with Hesco nozzle diffuser was used for verification the direct description method that was used to model grill and square ceiling diffusers, and good agreement was obtained compared with the results from previous authors.
As a final results it was found that the best case is with single grill diffuser near ceiling and outlet is on ceiling near grill diffuser for intermediate range of air flow rate and temperature that lead to small difference of temperature for height and ADPI is equal to 89 %.
Main Subjects
Topics
No. of Pages
137
Table of Contents
Table of contents.
Abstract.
Abstract in Arabic.
Chapter One : introduction.
Chapter Two : literature review.
Chapter Three : theoretical analysis.
Chapter Four : numerical solution.
Chapter Five : results and discussion.
Chapter Six : conclusions and recommendations.
References.
American Psychological Association (APA)
al-Asadi, Abd al-Amir Hamid Muhammad. (2012). Numerical study on airflow in an office room with grill and square ceiling diffusers. (Master's theses Theses and Dissertations Master). University of Basrah, Iraq
https://search.emarefa.net/detail/BIM-317178
Modern Language Association (MLA)
al-Asadi, Abd al-Amir Hamid Muhammad. Numerical study on airflow in an office room with grill and square ceiling diffusers. (Master's theses Theses and Dissertations Master). University of Basrah. (2012).
https://search.emarefa.net/detail/BIM-317178
American Medical Association (AMA)
al-Asadi, Abd al-Amir Hamid Muhammad. (2012). Numerical study on airflow in an office room with grill and square ceiling diffusers. (Master's theses Theses and Dissertations Master). University of Basrah, Iraq
https://search.emarefa.net/detail/BIM-317178
Language
English
Data Type
Arab Theses
Record ID
BIM-317178
