Solidification of nano-enhanced phase change material (NEPCM) in a wavy cavity

被引：0

作者：

S. Kashani

A. A. Ranjbar

M. Abdollahzadeh

S. Sebti

机构：

[1] Islamic Azad University,Department of Mechanical Engineering

[2] Babol University of Technology,Department of Mechanical Engineering

[3] University of Beira Interior,Department of Electromechanical Engineering, Center for Aerospace Sciences and Technology

[4] Urmia University of Technology,Department of Mechanical Engineering

来源：

Heat and Mass Transfer | 2012年 / 48卷

关键词：

Solidification Time; Phase Change Material; Heat Transfer Enhancement; Average Nusselt Number; Thermal Energy Storage;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The effects of surface waviness (λ = 0, 0.125, 0.25, 0.5) and nanoparticle dispersion (ϕ = 0, 0.05, 0.1) on solidification of Cu-water nanofluid inside a vertical enclosure are investigated numerically for different Grashof number (Gr = 105, 106, 107). An enthalpy porosity technique is used to trace the solid and liquid interface. Comparisons with previously published works show the accuracy of the obtained results. A maximum of 25.9% relative variation of freezing time with surface waviness was observed for λ = 0.5, while the relative variation of freezing time with nanoparticles in comparison with surface waviness was negative for high values of λ. It was observed that surface waviness can be used to control the solidification time based on enhancing different mechanism of solidification.

引用

页码：1155 / 1166

页数：11

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