عنوان المقالة:تاخر الطور على الحمل الحراري الانتقالي في قناه مايكرويه Effect of Dual-Phase-Lag in the Presence of Suction/Injection on Unsteady Free-Convection Micro-Channel Flow between Two Vertical Porous Plates
الاستاذ الدكتور احمد كاظم حسين | Prof.Dr. Ahmed Kadhim Hussein | 5727
نوع النشر
مجلة علمية
المؤلفون بالعربي
حهها , اوبيني , احمد كاظم حسين
المؤلفون بالإنجليزي
B. K. Jha C. O. Obieje and Ahmed Kadhim Hussein
الملخص العربي
تاخر الطور على الحمل الحراري الانتقالي في قناه مايكرويه
الملخص الانجليزي
The transient, laminar, fully developed, free convection flow inside an open-ended, vertical, parallel-porousplate, micro-channel is considered using Dual-Phase-Lag heat conduction model. This study adopted the approach of the model that combines both continuum and possibility of slip at the boundary. The well known Laplace transform technique is applied to solve the time dependent governing equations, while the method of Riemann-sum approximation is employed to invert the Laplace domain to the time domain in order to obtain the velocity, temperature, skin-friction and rate of heat transfer. The obtained results are described by line graphs. It has been observed that the phase lags in both heat flux and temperature gradient on the micro-channel thermal behaviour have significant effect at the early stage of time. And as the temperature phase lag is set greater than that of heat flux phase lag, higher fluid temperature, velocity as well as the velocity slip at the hot wall are observed than when it is less than the heat flux phase lag. Increase in suction/injection increases the skin friction and the Nusselt number at the hot wall of the micro-channel.
تاريخ النشر
09/12/2013
الناشر
TextRoad Publication
رقم المجلد
3
رقم العدد
11
ISSN/ISBN
2090-4304
رابط DOI
www.textroad.com
الصفحات
230-250
رابط الملف
تحميل (81 مرات التحميل)
الكلمات المفتاحية
natural convection
رجوع