在Ag-AlO/水混合磁共流纳米流上进行了增强的热传递分析
1Department of Mathematics, School of Advanced Sciences, Vellore Institute of Technology, Vellore, India.
Discover nano
|February 22, 2024
概括
与球形相比,血小板形的银氧化物混合纳米颗粒显著增强了多孔介质中的热传递和流动. 这项研究为优化热交换机和能源设备中的纳米流体应用提供了洞察力.
科学领域:
- 热力学和流体力学 热力学和流体力学
- 材料科学和纳米技术材料科学和纳米技术
背景情况:
- 混合纳米流体,结合多个纳米粒子,提供优越的热性能比传统的流体.
- 了解多孔介质中的热量和流量特性对于能源和工程应用至关重要.
研究的目的:
- 为了研究银-氧化物 (Ag-Al2O3) 混合纳米流体在多孔介质中的不稳定拉伸板上的热和流动行为.
- 分析各种参数,包括纳米粒子形状,焦尔加热,粘性消散,滑动和吸收,对流体动力学和热性能的影响.
主要方法:
- 使用相似性转换,管理部分微分方程 (PDEs) 被转换为非线性普通微分方程 (ODEs).
- 使用bvp4c解决器获得了数值解决方案.
- 研究了球体和血小板纳米粒子形状对温度和速度配置的影响.
主要成果:
- 增加的多孔性,滑动性和吸收参数导致速度配置的下降.
- 生物数,磁性参数和埃克尔特数的升高导致温度升高.
- 与球形相比,血小板形的纳米颗粒显示出优越的传热和流动特性,在5%体积分数下,传热的增强率为11.88%,与球形相比.
结论:
- 血小板形的Ag-Al2O3纳米颗粒由于其更大的表面积和异型特性,为热传递增强提供了显著的优势.
- 这些发现对于设计和优化热交换器,微流体和能量转换设备中的基于纳米流体的系统非常有价值.
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