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使用MGO-水纳米流体对多个喷气阻塞的流体结构和热传递行为进行实验和数值调查
Tsz Loong Tang1, Hamidon Salleh1, Muhammad Imran Sadiq2
1Centre for Energy and Industrial Environment Studies (CEIES), Faculty of Mechanical and Manufacturing Engineering, Universiti Tun Hussein Onn Malaysia, Parit Raja 86400, Batu Pahat, Johor, Malaysia.
Materials (Basel, Switzerland)
|June 10, 2023
概括
在特定条件下,氧化 (MgO) - 水纳米流体可以在多个喷气中增强热传递. 最佳性能取决于喷射间距,颗粒度和流速,并注意到潜在的不良影响.
科学领域:
- 热传递热量转移的方法
- 流体动力学 流体动力学
- 纳米材料是一种纳米材料.
背景情况:
- 纳米流体提供了增强的传热能力,特别是在喷气冲击冷却.
- 有限的研究存在于多个喷气冲击系统中的纳米流体.
- 了解复杂的流体结构中的纳米流体行为对于先进的冷却至关重要.
研究的目的:
- 用MgO-水纳米流体实验和数量研究多次喷气冲击的流体结构和热传递.
- 分析喷射间距,雷诺兹数和粒子体积分数对冷却性能的影响.
- 评估纳米流体热传输单相模型的预测准确度.
主要方法:
- 用MgO-水纳米流体对3x3直线喷射阵列进行实验研究.
- 使用ANSYS Fluent与SST k-ω流模型进行3D数值分析.
- 不同的喷射间距 (3-6毫米),雷诺兹数 (1000-10,000) 和粒子体积分数 (0-0.15%).
主要成果:
- 与纳米流体观察到的热传递增强在小喷射间隔,高粒子体积分数和低雷诺兹数.
- 不良的传热效应可以在不同的条件下发生.
- 单相模型捕捉了趋势,但由于忽视了纳米粒子效应,与实验数据有很大差异.
结论:
- MgO-水纳米流体显示出在多次喷气冲击冷却中增强热传递的潜力.
- 需要仔细考虑操作参数,才能达到所需的冷却性能.
- 需要先进的模型来准确预测这种系统中的纳米流体行为.
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