圆柱体对部分加热方形外中的水热特性的旋转效应,使用CNT-水纳米流体
A K Azad1,2, Md Jahid Hasan3, M F Karim4
1Department of Mathematics, Bangladesh University of Engineering and Technology, Dhaka, 1000, Bangladesh.
Heliyon
|December 14, 2023
概括
这项研究研究了在使用CNT-水纳米流体的旋转筒的部分加热方形外中的热水现象. 较高的气旋转速度增强了热传递,流体流动和阻力.
科学领域:
- 热传递是一种热传递.
- 流体动力学 流体动力学
- 纳米流体 纳米流体
背景情况:
- 在MHD混合对流下,在腔流中旋转的气的研究是广泛的.
- 使用CNT-水纳米流体进行部分加热的方形外与旋转筒和磁场的研究有限.
研究的目的:
- 在特定条件下,以旋转筒的方形外评估水热现象.
- 分析旋转速度和无维时间对流体流动和热行为的影响.
主要方法:
- 使用基于Galerkin残余的有限元素方法进行数值模拟.
- 参数研究涉及各种旋转速度 (Ω) 和无维时间 (τ).
主要成果:
- 热传递速率,阻力,根平均平方 (rms) 速度和温度随着旋转速度和无维时间的增加而增加.
- 最大旋发生在 Ω = 8 和 τ = 1 时,旋随着旋转速度增加 12 倍.
- 较高的旋转速度会导致平均流体温度和阻力增加.
结论:
- 该研究表明,增加气的旋转速度可以显著提高流体流量和热性能.
- 在 Ω = 8 和 τ = 1 时观察到最大温度变异的最佳条件.
- 这些发现为优化这些系统中的热传输和流体动力学提供了宝贵的见解.
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