Publication Cover
Numerical Heat Transfer, Part A: Applications
An International Journal of Computation and Methodology
Volume 77, 2020 - Issue 4
227
Views
14
CrossRef citations to date
0
Altmetric
Original Articles

Nanofluid double diffusive natural convection in a porous cavity under multiple force fields

, & ORCID Icon
Pages 343-360 | Received 22 Aug 2019, Accepted 07 Nov 2019, Published online: 26 Nov 2019
 

Abstract

The lattice Boltzmann method (LBM) is used to simulate the double diffusive natural convection of nanofluids (Al2O3 – H2O) in a porous cavity under the action of a magnetic field. The effects on temperature, mass, velocity field, average Nusselt number, and Sherwood number are investigated by changing Rayleigh number (1e3 – 1e5), Darcy number (1e−5 – 1e−3), Hartmann number (0–100), and inclination angle (0–60°). The results show that the porous medium weakens the convection effect. When Ra is small, Ha has less influence on Nuave and Shave. When Ra is larger, the temperature/mass transfer decrease as Ha increases. The influence of Da is basically consistent with Ra. The effect of inclination angle is related to the Da. When Da is small, there is no remarkable influence on heat/mass transfer and velocity field by increasing the inclination angle. As Da increases, inclination angle will weaken temperature and mass transfer.

Additional information

Funding

The authors gratefully acknowledge the financial support from National Natural Science Foundation of China under Grant No. 51476102.

Reprints and Corporate Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

To request a reprint or corporate permissions for this article, please click on the relevant link below:

Academic Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

Obtain permissions instantly via Rightslink by clicking on the button below:

If you are unable to obtain permissions via Rightslink, please complete and submit this Permissions form. For more information, please visit our Permissions help page.