Main Page
Welcome
About the Center
About The SPC
Mission and Vision
Organizational Structure
Spc Directors
Facts and Figures
Services
ِActivities
Exhibitions
Print Exhibition
Books Exhibition
Visits
Training
Workshops
Courses
Seminars
Conventions
Celebrations
Research
Favorite Links
Contact Us
PhotoAlbum
Contact Us
Researches
عربي
English
About
Admission
Academic
Research and Innovations
University Life
E-Services
Search
Scientific Publishing Center
Document Details
Document Type
:
Article In Journal
Document Title
:
Natural Convection in a Tilted Rectangular Enclosure with a Single Discrete Heater
انتقال الحرارة بالحمل الحر داخل وعاء مستطيل المقطع من مصدر تسخين محدود الأبعاد
Subject
:
Thermal Engineering
Document Language
:
English
Abstract
:
The effect of inclination angle on the steady laminar free convection in a rectangular enclosure (aspect ratio = 5), which is discretely heated by an isoflux flush mounted small heater (L / H = 0.125) is studied numerically. The local and average Nusselt numbers are compared at inclination angles from 0 (bottom heating) to 180? (top heating), for modified Rayleigh numbers 102 ? Ra* ? 106. The two-dimensional mass, momentum and energy equations with Boussinesq approximation are solved for the present configuration where the sidewalls are adiabatic and the heat sink is isothermal. Forward time central space implicit finite difference scheme is employed to solve the coupled governing equations. Numerical results demonstrate the strong dependence of streamlines and isotherms on both inclination angle and Rayleigh number. Unlike fully heated enclosures the end effects of the discrete concentrated heat source enhances convection and increases the average Nusselt number as compared to that for thermally full active wall. The effect of the orientation angle on the flow structure and associated transition between unicellular and multiple cell flow is presented. The maximum Nusselt number is found close to the vertical orientation while the minimum is at the horizontal position with fluid heated from the top for which convection is effectual and the average Nusselt number is greater than unity.
ISSN
:
1319-1047
Journal Name
:
Engineering Sciences Journal
Volume
:
16
Issue Number
:
2
Publishing Year
:
1426 AH
2005 AD
Number Of Pages
:
19
Article Type
:
Article
Added Date
:
Sunday, October 11, 2009
Researchers
Researcher Name (Arabic)
Researcher Name (English)
Researcher Type
Dr Grade
Email
على الباهي
A. Al-Bahi
Researcher
ماجد الحازمي
M. Al-Hazmy
Researcher
جلال زكي
G. M. Zaki
Researcher
Files
File Name
Type
Description
22999.pdf
pdf
Back To Researches Page