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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
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D. Srinivasacharya and P. Jagadeeshwar
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( Received:
October 05, 2017
– Accepted in Revised Form: November 30, 2017 )
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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.
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Keywords
Heat and Mass transfer, Soret ,Dufour, Convective Thermal Condition
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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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