热辐射和磁场对方腔内纳米流体流动与传热的影响

doi:10.16039/j.cnki.cn22-1249.2024.07.012

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摘要对封闭方腔内热辐射和磁场对纳米流体流动与传热影响进行了数值研究。方腔内充满黏性、不可压缩的Al₂O₃-H₂O的纳米流体，对辐射具有吸收、发射和散射，同时具有导电性。方腔的上下壁面为绝热壁面，左右壁面为恒温壁面。所有的控制方程采用配置点谱方法进行求解。在数值验证之后，通过改变磁场倾斜角度和壁面黑度对流场、温度场和Nu数的影响从而分析热辐射和磁场对流动与传热的影响。

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	罗小红
	孙志明

关键词: 纳米流体配置点谱方法封闭方腔热辐射

Abstract:

In this paper, the effects of thermal radiation and magnetic field on the fluid flow and heat transfer of the nanofluids in a square cavity are numerically studied. The square cavity is filled with the absorbing-emitting-scatterng Al₂O₃/water nanofluids, which is assumed to be viscous, incompressible, and also have electrical conductivity. The top and the bottom walls of the square cavity are perfectly insulated while the left and right vertical walls are maintained isothermal. All the governing equations are solved by using the collocation spectral method. After the validation of numerical results, streamlines, isotherms, and Nusselt number are analyzed for the effects of the inclination angle of the magnetic field and the emissivity of walls.

Key words: nanofluids collocation spectral method cavity thermal radiation

出版日期: 2024-07-25 发布日期: 2024-07-25 整期出版日期: 2024-07-25

TK124

引用本文:

罗小红, 孙志明.

热辐射和磁场对方腔内纳米流体流动与传热的影响 [J]. 吉林化工学院学报, 2024, 41(7): 72-78.
LUO Xiaohong, SUN zhiming. Thermal Radiation and Magnetic Field Effects on the Flow and Heat Transfer of the Nanofluid in a Square Cavity. Journal of Jilin Institute of Chemical Technology, 2024, 41(7): 72-78.

链接本文:

https://xuebao.jlict.edu.cn/CN/10.16039/j.cnki.cn22-1249.2024.07.012 或 https://xuebao.jlict.edu.cn/CN/Y2024/V41/I7/72

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