首页> 外文期刊>Computers & mathematics with applications >Numerical simulation of nanofluid convective heat transfer in an oblique cavity with conductive edges equipped with a constant temperature heat source: Entropy production analysis
【24h】

Numerical simulation of nanofluid convective heat transfer in an oblique cavity with conductive edges equipped with a constant temperature heat source: Entropy production analysis

机译:具有恒温热源的导电边缘倾斜腔内纳米流体对流传热的数值模拟:熵生产分析

获取原文
获取原文并翻译 | 示例

摘要

In the present work, the entropy production of Al2O3-water nanofluid in an oblique cavity enclosure is examined. The side edges of the enclosure are at lower temperature and the top and down ones are insulated. Two thick conductive walls are placed on the low temperature edges. Furthermore, the center of the enclosure is equipped with a constant high temperature heat source. The enclosure is exposed to an inclined magnetic field. The governing nonlinear partial differential equations are continuity, Navier-Stokes and energy equations. These equations are solved using an open-source CFD software package (OpenFOAM). The influence of effective parameters includes Ra number, Hartman number, the angles of magnetic field and enclosure, nanoadditives concentration, and aspect ratio on the entropy production and the Bejan (Be) number are investigated. The results show that the minimum entropy production happened at low power magnetic fields. With the increase of the slope of the cavity, the entropy production rises. The addition of nanoadditives leads to an intensification in the entropy production and a reduction in the Be number. (C) 2019 Elsevier Ltd. All rights reserved.
机译:在本作工作中,检查了倾斜腔外壳中Al2O3水纳米流体的熵产生。外壳的侧边缘处于较低的温度,顶部和下部是绝缘的。将两个厚的导电壁放置在低温边缘上。此外,外壳的中心配备有恒定的高温热源。外壳暴露于倾斜磁场。管理非线性偏微分方程是连续性,Navier-Stokes和能量方程。使用开源CFD软件包(OpenFoam)解决这些方程。有效参数的影响包括RA数,Hartman号,磁场角,磁场角,纳米载体浓度和跨熵产生的纵横比,并进行了Bejan(Be)。结果表明,低功耗磁场发生的最小熵产生。随着腔坡的增加,熵产生升高。添加纳米载体导致熵产生的强化,并且在数量下降。 (c)2019 Elsevier Ltd.保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号