Bioconvection heat transfer of a nanofluid over a stretching sheet with velocity slip and temperature jump

Thermal Science

Zhang Xinxin¹  Zhang Chaoli²  Shen Bingyu³  Zheng Liancun³ 

[1] University of Science and Technology Beijing, School of Mathematics and Physics, Beijing, China;University of Science and Technology Beijing, School of Mechanical Engineering, Beijing, China + University of Science and Technology Beijing, School of Mathematics and Physics, Beijing, China;University of Science and Technology Beijing, School of Mechanical Engineering, Beijing, China;

关键词: nanofluid;    gyrotactic microorganisms;    bioconvection;    velocity slip;    temperature jump;   

DOI  :  10.2298/TSCI150424128S

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown