非均匀SiO<sub>2</sub>-H<sub>2</sub>O纳米流体辐射特性研究

doi:10.11896/cldb.18010104

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Abstract In this article, a gradient refractive index radiation transfer model of SiO₂-H₂O nanofluids was established, the transmittance and reflectivity of the nanofluids against the background of continuous impulse radiation were obtained through the discontinuous finite element method. The absorption effect of heterogeneous nanofluids was studied by comparing with the transmittance and reflectivity of homogeneous nanofluids. At the same time, the effects of the refractive index gradient, mass fraction and particle size on the reflectance and transmittance of nanofluids were also analyzed. The results show that the reflectivity and transmittance will decrease for the nanofluids which have gradient index, and the absorptivity will be increased from 30% to 41.9%; the increase of the refractive index gradient will make the reflectivity and transmittance reduce further; the increase of mass fraction and particle size will bring about the increase of reflectivity and the decrease of transmittance.

Key words： nanofluids gradient refractive index radiative transfer equation discontinuous finite element method

Published: 28 April 2019

CLC number:

TK121

Fund:This work was financially supported by the National Natural Science Foundation of China (51534004).

About author:: Lijun Liuis a professor of Northeast Petroleum University.

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	LIU Lijun
	ZHANG Yifan
	MA Chuan
	LIU Xiaoyan

Cite this article:

LIU Lijun,ZHANG Yifan,MA Chuan, et al. Theoretical Study on Radiation Characteristics of Heterogeneous SiO₂-H₂O Nanofluids[J]. Materials Reports, 2019, 33(8): 1268-1271.

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http://www.mater-rep.com/EN/10.11896/cldb.18010104 OR http://www.mater-rep.com/EN/Y2019/V33/I8/1268

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