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首页> 外文期刊>Physics and Chemistry of Liquids >Numerical simulation of heat transfer enhancement for natural convection in a cubical enclosure filled with Al2O3/water and Ag/water nanofluids
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Numerical simulation of heat transfer enhancement for natural convection in a cubical enclosure filled with Al2O3/water and Ag/water nanofluids

机译：填充Al2O3 /水和Ag /水纳米流体的立方外壳中自然对流换热增强的数值模拟

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摘要

In the present study, the natural convective heat transfer in a cube filled with Al2O3/H2O and Ag/H2O nanofluids is investigated numerically. Commercial CFD code FLUENT has been used to simulate water-based nanofluid considering it as a single-phase fluid. The influence of different parameters, such as the Rayleigh number and the nanoparticle volume fraction, is studied. The velocity vectors and the isotherm profiles are plotted. The variation of the Average Nusselt number at the hot wall and the variation of y-component of velocity are presented and discussed. The numerical results show a decrease in the heat transfer with the increase in the particle volume fraction and the same trend in the increase of the Nusselt number with the Rayleigh number.
机译：在本研究中，对填充有Al2O3 / H2O和Ag / H2O纳米流体的立方体中的自然对流传热进行了数值研究。商业CFD代码FLUENT已被视为模拟水基纳米流体，因为它是单相流体。研究了诸如瑞利数和纳米粒子体积分数等不同参数的影响。绘制了速度矢量和等温线轮廓。提出并讨论了热壁处平均努塞尔数的变化和速度y分量的变化。数值结果表明，随着颗粒体积分数的增加，传热减少，随着瑞利数的增加，努塞尔数增加。

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