抛物槽式太阳能集热器内合成油基纳米流体传热特性的数值模拟

doi:10.19596/j.cnki.1001-246x.8183

计算物理 ›› 2021, Vol. 38 ›› Issue (1): 99-105.DOI: 10.19596/j.cnki.1001-246x.8183

抛物槽式太阳能集热器内合成油基纳米流体传热特性的数值模拟

周璐, 马红和

太原理工大学电气与动力工程学院, 山西太原 030024

收稿日期:2019-12-10 修回日期:2020-02-28 出版日期:2021-01-25 发布日期:2021-01-25
作者简介:周璐(1987-),女(汉),讲师,博士,主要从事纳米流体传热传质数值模拟研究,E-mail:zhoulu19870905@163.com
基金资助:
山西省高等学校青年科研人员培育计划资助项目

Numerical Simulation of Heat Transfer of Synthetic Oil-based Nanofluids in a Parabolic Trough Solar Receiver

ZHOU Lu, MA Honghe

School of Electrical and Power Engineering, Taiyuan University of Technology, Taiyuan, Shanxi 030024, China

Received:2019-12-10 Revised:2020-02-28 Online:2021-01-25 Published:2021-01-25

摘要/Abstract

摘要： 对Al₂O₃-合成油纳米流体在槽式太阳能集热管内的传热特性进行流体动力学数值模拟，重点考察纳米流体导热系数模型的影响。通过与管内Nusselt数半经验模型的预测结果对比，表明使用考虑布朗运动的纳米流体导热系数模型可较好地预测集热管内传热特性。研究表明纳米颗粒与流体基液的相对运动具有促进集热管内传热的作用。最后，定量研究纳米颗粒添加量对提高基础流体平均传热系数的影响，显示纳米流体在太阳能集热器中具有巨大应用潜力。

关键词: 纳米流体, 计算流体动力学, 抛物槽式太阳能集热器, 导热系数模型

Abstract: A computational fluid dynamics numerical simulation was performed on Al₂O₃-synthetic oil nanofluids to study heat transfer in a trough solar receiver. Different nanofluid thermal conductivity models were tried. Calculated Nusselt numbers were compared with results of semiempirical model models. It was found that the thermal conductivity model based on Brownian motion predicted heat transfer characteristics well. The relative motion between nanoparticles and base fluid was found important in enhancing heat transfer. Further volume fraction analysis shows that the nanoparticles improved significantly average heat transfer coefficient, which indicates that nanofluids have great potential in solar collector applications.

Key words: nanofluid, computational fluid dynamics, parabolic trough solar receiver, thermal conductivity model

中图分类号:

TK123

周璐, 马红和. 抛物槽式太阳能集热器内合成油基纳米流体传热特性的数值模拟[J]. 计算物理, 2021, 38(1): 99-105.

ZHOU Lu, MA Honghe. Numerical Simulation of Heat Transfer of Synthetic Oil-based Nanofluids in a Parabolic Trough Solar Receiver[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 2021, 38(1): 99-105.

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抛物槽式太阳能集热器内合成油基纳米流体传热特性的数值模拟

Numerical Simulation of Heat Transfer of Synthetic Oil-based Nanofluids in a Parabolic Trough Solar Receiver

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