Sains Malaysiana 41(11)(2012):
1467–1473
Stagnation Point Flow over a Stretching
Sheet with Newtonian Heating
(Aliran Titik Genangan pada Helaian
Meregang dengan Pemanasan Newtonan)
Muhammad
Khairul Anuar Mohamed
Fakulti
Informasi & Teknologi Interaktif, Kolej Universiti Shahputra 25200
Kuantan, Pahang, Malaysia
Mohd Zuki
Salleh*
Fakulti
Sains dan Teknologi Industri, Universiti Malaysia Pahang
26300 UMP Kuantan, Pahang, Malaysia
Roslindar
Nazar, Anuar Ishak
Pusat
Pengajian Sains Matematik, Fakulti Sains dan Teknologi
Universiti
Kebangsaan Malaysia, 43600 UKM Bangi,
Selangor, Malaysia
Diserahkan:
24 Februari 2012 / Diterima: 23 Jun 2012
ABSTRACT
In this study, the numerical
solution of stagnation point flow over a stretching surface, generated by
Newtonian heating in which the heat transfer from the surface is proportional
to the local surface temperature is considered. The transformed boundary layer
equations are solved numerically using the shooting method. Numerical solutions
are obtained for the local heat transfer coefficient, the surface temperature
and the temperature profiles. The features of the flow and heat transfer
characteristics for various values of the Prandtl number, stretching parameter
and conjugate parameter are analyzed and discussed.
Keywords: Newtonian heating;
numerical solution; stagnation point flow; stretching sheet
ABSTRAK
Dalam kajian
ini, penyelesaian berangka bagi masalah aliran titik genangan pada permukaan
meregang yang dijanakan oleh pemanasan Newtonan, iaitu pemindahan haba daripada
permukaan berkadar langsung dengan suhu permukaan setempat dipertimbangkan. Persamaan lapisan sempadan terjelma diselesaikan secara berangka
dengan kaedah tembakan. Penyelesaian berangka
diperoleh bagi pekali pemindahan haba setempat, suhu permukaan dan profil suhu. Ciri-ciri aliran dan pemindahan haba bagi pelbagai nilai
nombor Prandtl, parameter regangan dan parameter konjugat dianalisis dan
dibincangkan.
Kata
kunci: Aliran titik genangan; helaian meregang; pemanasan Newtonan;
penyelesaian berangka
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*Pengarang
untuksurat-menyurat; email: zukikuj@yahoo.com
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