The stagnation-point flow and heat transfer toward a stretching/shrinking sheet in a nanofluid containing gyrotactic microorganisms with suction are investigated. Using a similarity transformation, the nonlinear system of partial differential equations is converted into nonlinear ordinary differential equations. These resulting equations are solved numerically using a shooting method. The skin friction coefficient, local Nusselt number, local Sherwood number, and the local density of the motile microorganisms as well as the velocity, temperature, nanoparticle volume fraction and the density of motile microorganisms profiles are analyzed subject to several parameters of interest, namely suction parameter, thermophoresis parameter, Brownian motion parameter, Lewis number, Schmidt number, bioconvection Péclet number, and the stretching/shrinking parameter. It is found that dual solutions exist for a certain range of the stretching/shrinking parameter for both shrinking and stretching cases. The results indicate that the skin friction coefficient, local Nusselt number, local Sherwood number, and the local density of the motile microorganisms increase with suction effect. It is also observed that suction widens the range of the stretching/shrinking parameter for which the solution exists.
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Pauh Putra Campus,
Universiti Malaysia Perlis,
Faculty of Science and Technology,
Universiti Kebangsaan Malaysia,
Babeş-Bolyai University,
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Research-Article
Stagnation-Point Flow Toward a Stretching/Shrinking Sheet in a Nanofluid Containing Both Nanoparticles and Gyrotactic Microorganisms
Khairy Zaimi,
Pauh Putra Campus,
Universiti Malaysia Perlis,
Khairy Zaimi
Institute of Engineering Mathematics
,Pauh Putra Campus,
Universiti Malaysia Perlis,
02600 Arau, Perlis
, Malaysia
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Anuar Ishak,
Faculty of Science and Technology,
Universiti Kebangsaan Malaysia,
Anuar Ishak
School of Mathematical Sciences
,Faculty of Science and Technology,
Universiti Kebangsaan Malaysia,
43600 UKM Bangi, Selangor
, Malaysia
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Ioan Pop
Babeş-Bolyai University,
Ioan Pop
1
Department of Mathematics
,Babeş-Bolyai University,
Cluj-Napoca 400084
, Romania
e–mail: popm.ioan@yahoo.co.uk1Corresponding author.
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Khairy Zaimi
Institute of Engineering Mathematics
,Pauh Putra Campus,
Universiti Malaysia Perlis,
02600 Arau, Perlis
, Malaysia
Anuar Ishak
School of Mathematical Sciences
,Faculty of Science and Technology,
Universiti Kebangsaan Malaysia,
43600 UKM Bangi, Selangor
, Malaysia
Ioan Pop
Department of Mathematics
,Babeş-Bolyai University,
Cluj-Napoca 400084
, Romania
e–mail: popm.ioan@yahoo.co.uk
1Corresponding author.
Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received June 18, 2013; final manuscript received October 24, 2013; published online January 31, 2014. Assoc. Editor: Andrey Kuznetsov.
J. Heat Transfer. Apr 2014, 136(4): 041705 (9 pages)
Published Online: January 31, 2014
Article history
Received:
June 18, 2013
Revision Received:
October 24, 2013
Citation
Zaimi, K., Ishak, A., and Pop, I. (January 31, 2014). "Stagnation-Point Flow Toward a Stretching/Shrinking Sheet in a Nanofluid Containing Both Nanoparticles and Gyrotactic Microorganisms." ASME. J. Heat Transfer. April 2014; 136(4): 041705. https://doi.org/10.1115/1.4026011
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