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Technical Brief

Effects of Suction and Freestream Velocity on a Hydromagnetic Stagnation-Point Flow and Heat Transport in a Newtonian Fluid Toward a Stretching Sheet

[+] Author and Article Information
P. G. Siddheshwar

Professor
Department of Mathematics,
Bangalore University,
Jnana Bharathi Campus,
Bangalore 560 056, India
e-mails: pgsiddheshwar@bub.ernet.in;
mathdrpgs@gmail.com

N. Meenakshi

DST-PURSE Junior Research Fellow
Department of Mathematics,
Bangalore University,
Jnana Bharathi Campus,
Bangalore 560 056, India
e-mail: meenakshi.nerolu@gmail.com

1Corresponding author.

Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received June 17, 2014; final manuscript received April 16, 2016; published online May 17, 2016. Assoc. Editor: Oronzio Manca.

J. Heat Transfer 138(9), 094501 (May 17, 2016) (4 pages) Paper No: HT-14-1410; doi: 10.1115/1.4033460 History: Received June 17, 2014; Revised April 16, 2016

Forced flow of an electrically conducting Newtonian fluid due to an exponentially stretching sheet is studied numerically. Free stream velocity is present and so is suction at the sheet. The governing coupled, nonlinear, partial differential equations of flow and heat transfer are converted into coupled, nonlinear, ordinary differential equations by similarity transformation and are solved numerically using shooting method, and curve fitting on the data is done by differential transform method together with Padé approximation. Prescribed exponential order surface temperature (PEST) and prescribed exponential order surface heat flux are considered for investigation of heat transfer related quantities. The influence of Chandrasekhar number, suction/injection parameter, and freestream parameter on heat transport is presented and discussed. Coefficient of friction and heat transport is also evaluated in the study. The results are of interest in extrusions and such other processes.

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Figures

Grahic Jump Location
Fig. 1

Schematic of the stretching sheet

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