Convective Heat Transfer in Micropolar Fluid in Presence of Radiation
Date
2009
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Al-Neelain University
Abstract
Abstract
In this thesis we study the developing theory of
micropolar fluids and compare that with ordinary fluids, and
the of heat transfer mechanism in boundary layer micropolar
fluids, after reviewing of boundary layer in ordinary fluid as
well as magnetohydrodynamics.
Mainly the effects of radiation on the flows and heat
transfer of an electrically conducting micropolar fluid past
semi-infinite vertical plate in presence of uniform magnetic
field are considered. The non-linear partial differential
equations governing the problem under consideration are
converted into a system of non-linear ordinary differential
equations by means of similarity transformations, the
resulting system of coupled non-linear ordinary differential
equations, is solved numerically for a range of values of
radiation, magnetic, microrotation and vortex viscosity
parameters and also, Grashoff’s number, is obtained by
applying an efficient numerical technique based on shooting
method, using (mathematica pages). The effects of these
parameters are examined on the velocity of the fluid,
temperature distribution and angular velocity of
microstructure, as well as the coefficient of heat flux and
shearing stress at the plate. The velocity of fluid, angular
velocity and temperature profiles are shown graphically and
the numerical results are obtained.
4
الخلاصة
نافشت الرسالة النظرية والتطبيق فى الموائع الميكروبولرية
( دقيقة القطبية ) و مقارنتها بالموائع التعتيادية . وبصسسورة رئيسسسية
درست انتقال الحرارة جوار جدار راسسى نصسف لنهسائى وتساثيرات
العشعاع فى وجود مجال مغناطيسى تعلى حركسة المسائع, وفسى هسذا
حلت معادلت النظام تعدديا بعد تحويلها من معادلت تفاضلية جزئية
غير خطية التماثلية الى معادلت تفاضلية تعادية غيسر خطيسة وامكسن
رسسم منحنيسات توزيسع سسرتعات النمسوذج للمسائع, السسرتعة الزاويسة
للجزئيات و توزيع الحرارة لقيم مختلقسة للعوامسل الستى تتحكسم فسى
الحركة. كما امكن ايضا حسساب القيسم العدديسة لمركبسات الحتكساك
.تعلى جدارومعامل انتقال الحرارة
Description
Keywords
الرياضيات, Statistics, Mathematical Statistics, differential equations.