Abstract




 
   

IJE TRANSACTIONS A: Basics Vol. 31, No. 1 (January 2018) 120-127   

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  FLOW OVER AN EXPONENTIALLY STRETCHING POROUS SHEET WITH CROSS-DIFFUSION EFFECTS AND CONVECTIVE THERMAL CONDITIONS
 
D. Srinivasacharya and P. Jagadeeshwar
 
( Received: October 05, 2017 – Accepted in Revised Form: November 30, 2017 )
 
 

Abstract    This article investigates the influence of cross-diffusion on the viscous fluid flow over a porous sheet stretching exponentially by applying the convective thermal conditions. Velocity slip at the boundary is considered. The numerical solutions to the governing equations are evaluated using successive linearisation procedure and Chebyshev collocation method. It is observed from this study that the rate of heat transfer escalated with enhance in the Biot number and reduced with increase in dufour number. While, the rate of mass transfer from the sheet to the fluid reduced with increase in both soret and Biot numbers. Finally, the obtained results for rate of heat transfer are compared with the published results in the literature for special cases. The influence of the pertinent parameters on the physical quantities are displayed through graphs.

 

Keywords    Heat and Mass transfer, Soret ,Dufour, Convective Thermal Condition

 

چکیده    اين مقاله تأثير نفوذ عرضی را بر روي جريان مايع چسبنده بر روي يك ورقه متخلخل کششی به طور نمادین با استفاده از شرايط حرارتی کنتراست مورد بررسی داده است. لغزش سرعت در مرز در نظر گرفته شده است. راه حل های عددی برای معادلات حاکم با استفاده از روش خطی سازی متوالی و روش جابجایی Chebyshev ارزیابی می شود. از این مطالعه مشاهده می شود که میزان انتقال حرارت با افزایش عدد بیو افزایش می یابد و با افزایش عدد dufour کاهش می یابد. در حالی که سرعت انتقال جرم از ورق به مایع با افزایش هر دو عدد بیو و soret کاهش می یابد. در نهایت، نتایج به دست آمده برای میزان انتقال حرارت با نتایج منتشر شده در پیشینه ادبیات برای موارد خاص مقایسه می شود. تأثیر پارامترهای مربوط به مقادیر فیزیکی از طریق نمودارها نمایش داده می شود.

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