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| Numerical simulation of magnetic and gravitational coupled convectionof air in a cubic enclosure with a coil inclined around Y axis |
| Received:October 25, 2010 Revised:March 08, 2011 |
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| DOI：10.7511/jslx201104022 |
| KeyWord:thermo-magnetic convection numerical simulation magnetic force inclined electric coil |
| Author | Institution |
| 姜昌伟 |
长沙理工大学 能源与动力工程学院,长沙 |
| 李贺松 |
中南大学 能源科学与工程学院, 长沙 |
| 陈冬林 |
长沙理工大学 能源与动力工程学院,长沙 |
| 石尔 |
长沙理工大学 能源与动力工程学院,长沙 |
| 朱先锋 |
长沙理工大学 能源与动力工程学院,长沙 |
| 李茂 |
中南大学 能源科学与工程学院, 长沙 |
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| Abstract: |
| In the present study, Magnetic and Gravitational convection of air in a cubic enclosure with an electric coil inclined around the Y axis is numerically investigated under microgravity and gravity environment. Biot-Savart's is used to calculate magnetic field. The governing equations in primitive variables are discretized by the finite-volume method and solved by the SIMPLE algorithm. Computations are performed for a range of the Rayleigh number from 104 to 105, the inclination angle of coil yeuler from -90° to 90°, and magnetic force parameter γ from 0 to 200. The flow and temperature fields for the air thermomagnetic convection were presented and mean Nusselt numbers on the walls were calculated and compared. The results show that both the magnetic force and the coil inclination have significant effect on the flow field and heat transfer in a cubic enclosure. With the increases of γ number and Ra number, the overall heat transfer is enhanced gradually. |