THERMAL SCIENCE

International Scientific Journal

Bingyu Shen

,

Liancun Zheng

,

Chaoli Zhang

,

Xinxin Zhang

BIOCONVECTION HEAT TRANSFER OF A NANOFLUID OVER A STRETCHING SHEET WITH VELOCITY SLIP AND TEMPERATURE JUMP

ABSTRACT
This paper presents an investigation for bioconvection heat transfer of a nanofluid containing gyrotactic microorganisms over a stretching sheet, in which the effects of radiation, velocity slip, and temperature jump are taken into account. The non-linear governing equations are reduced into four ordinary differential equations by similarity transformations and solved by homotopy analysis method, which is verified with numerical results in good agree. Results indicate that the density of motile microorganisms and gyrotactic microorganisms increase with bioconvection Rayleigh number, while decrease with increasing in bioconvection Peclet number and bioconvection Lewis number. It is also found that the Nusselt number, Sherwood number, and gyrotactic microorganisms density depend strongly on the buoyancy, nanofluids, and bioconvection parameters.
KEYWORDS
nanofluid, gyrotactic microorganisms, bioconvection, velocity slip, temperature jump
PAPER SUBMITTED: 2015-04-24
PAPER REVISED: 2015-08-27
PAPER ACCEPTED: 2015-08-27
PUBLISHED ONLINE: 2015-09-06
DOI REFERENCE: https://doi.org/10.2298/TSCI150424128S
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2017, VOLUME 21, ISSUE Issue 6, PAGES [2347 - 2356]
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Bioconvection heat transfer of a nanofluid over a stretching sheet with velocity slip and temperature jump

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