Numerical prediction of free convection phenomena through a rectangular inclined cavity filled with a porous media

Other Title(s)

التخمين العددي لظاهرة الحمل الحر خلال فجوة مائلة مستطيلة الشكل مملؤءة بوسط مساسي

Author

Husayn, Ahmad Kazim

Source

The Iraqi Journal for Mechanical and Materials Engineering

Issue

Vol. 10, Issue 1 (30 Apr. 2010), pp.1-21, 21 p.

Publisher

University of Babylon College of Engineering

Publication Date

2010-04-30

Country of Publication

Iraq

No. of Pages

21

Main Subjects

Physics

Abstract AR

داخلي طباقي متساوي الحرارة فوق فجوة مسامية مائلة مستطيلة الشكل.

في هذا البحث تم استخدام مـوديـل دارسي و المعادلات الحاكمة تم حلها بواسطة طريقة تحت التراخي.

خواص الجريان تم حسابها لرقم برانـدل يساوي 700 و النسبة الباعية تساوي 1.5 الدراسة الحالية تضمنت أجراء الحسابات لقيم رقـم رايلـي 50 و 100 و لزاوية ميلان الفجوة بقيم 90, 50, 30.

النتائج أوضحت بأن الجريان يمثل بدوامة واحدة تـدور باتجاه عقارب الساعة و تملئ الفجوة بأكملها.

كذلك تم عرض نتائج التغير بين رقم نسلت المتوسط مـع زوايـا الميلان.

النتائج أوضحت تطابق جيد مع النتائج الأخرى المنشورة.

Abstract EN

Numerical simulation of free convection air flow through a porous media in an inclined rectangular cavity is studied.

Physical problem consists of a rectangular inclined cavity filled with a porous media.The top and bottom surfaces are thermally insulated while the left and right walls are maintained at isothermal hot and cold temperatures respectively.The two-dimensional flow is characterized using Under-Relaxation finite difference scheme.It is found that the two-dimensional flow is characterized by the vortices that are initiated by the existance of buoyancy effect.The problem considered deals with a two-dimensional internal, laminer, isothermal flow in an inclined rectangular porous cavity.

In this work, the Darcy model is used and the governing equations are solved using Under-Relaxation explicit technique for flow characterstics of Prandtl number at 0.7, an aspect ratio equals to 1.5, Rayleigh number ranging 50 and 100, and inclination angles of 30o, 50o and 90o respectively.

The results explain that the flow field is dominated by one cell rotating in a clockwise direction and filling the cavity.

Also, the variation of the average Nusselt number with inclination angles is also presented.The results showed a good agreement with other published results.

American Psychological Association (APA)

Husayn, Ahmad Kazim. 2010. Numerical prediction of free convection phenomena through a rectangular inclined cavity filled with a porous media. The Iraqi Journal for Mechanical and Materials Engineering،Vol. 10, no. 1, pp.1-21.
https://search.emarefa.net/detail/BIM-242941

Modern Language Association (MLA)

Husayn, Ahmad Kazim. Numerical prediction of free convection phenomena through a rectangular inclined cavity filled with a porous media. The Iraqi Journal for Mechanical and Materials Engineering Vol. 10, no. 1 (2010), pp.1-21.
https://search.emarefa.net/detail/BIM-242941

American Medical Association (AMA)

Husayn, Ahmad Kazim. Numerical prediction of free convection phenomena through a rectangular inclined cavity filled with a porous media. The Iraqi Journal for Mechanical and Materials Engineering. 2010. Vol. 10, no. 1, pp.1-21.
https://search.emarefa.net/detail/BIM-242941

Data Type

Journal Articles

Language

English

Notes

Includes bibliographical references : p. 12-13

Record ID

BIM-242941