The time evolution of a constant mass of air pollutant emitted by a point source
Other Title(s)
التطور الزمني لبؤرة من التلوث أطلقت في الهواء من مصدر ثابت
Joint Authors
Hasan, Muhammadal-Hajj Ali
al-Tayyib, Ibrahim Abd al-Raziq
Source
Sultan Qaboos University Journal for Science
Issue
Vol. 2006, Issue 11 (31 Dec. 2006), pp.79-93, 15 p.
Publisher
Sultan Qaboos University College of Science
Publication Date
2006-12-31
Country of Publication
Oman
No. of Pages
15
Main Subjects
Earth Sciences, Water and Environment
Topics
Abstract AR
أطلقت بؤرة تلوث من مصدر ثابت على علو معين في وقت معين، يقوم البحث بدراسة انتشار التلوث باستعمال نموذج رياضي يتكون من معادلة تفاضلية جزئية و شروط محلية و وقتية تحدد حالة الانطلاق.
استعملت طرق التحويلات الرياضية التكاملية لإيجاد الحل كما تم تحديد الزمن الكلي لانتشار التلوث الكلي و اعتماد ذلك الزمن على خواص بؤرة التلوث و الأحوال الجوية المصاحبة.
Abstract EN
The transient behavior of a constant mass (i.e.
a blob) of pollutant released from a point source at a height, h , above ground level at time t = 0 is studied.
The time dependent atmospheric diffusion equation in the presence of diffusion in both horizontal and vertical directions is used to model the problem.
The model is found to be governed by an initial-boundary-value problem for the concentration of the pollutant.
The solution is obtained in closed from using integral transform methods.
The solution is illustrated graphically using appropriate numerical integrations.
As time passes, the pollutant blob moves with a central point of accumulation of pollutant while the blob increases in volume to spread the pollutant around it.
The motion of the accumulation point in space and time is strongly influenced by wind and gravity while the spread of the pollutant is governed by diffusion.
The time taken by the blob to diffuse into space is estimated as a function of the parameters governing wind, gravity and diffusion.
American Psychological Association (APA)
Hasan, Muhammadal-Hajj Ali& al-Tayyib, Ibrahim Abd al-Raziq. 2006. The time evolution of a constant mass of air pollutant emitted by a point source. Sultan Qaboos University Journal for Science،Vol. 2006, no. 11, pp.79-93.
https://search.emarefa.net/detail/BIM-26381
Modern Language Association (MLA)
Hasan, Muhammadal-Hajj Ali& al-Tayyib, Ibrahim Abd al-Raziq. The time evolution of a constant mass of air pollutant emitted by a point source. Sultan Qaboos University Journal for Science No. 11 (2006), pp.79-93.
https://search.emarefa.net/detail/BIM-26381
American Medical Association (AMA)
Hasan, Muhammadal-Hajj Ali& al-Tayyib, Ibrahim Abd al-Raziq. The time evolution of a constant mass of air pollutant emitted by a point source. Sultan Qaboos University Journal for Science. 2006. Vol. 2006, no. 11, pp.79-93.
https://search.emarefa.net/detail/BIM-26381
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 92-93
Record ID
BIM-26381