在带有星形障碍物和混合纳米流体的驱动腔中对对流传热传递的灵敏性研究,使用响应表面方法
R M Ziaur1, A K Azad2, M M Rahman1
1Department of Mathematics, Bangladesh University of Engineering and Technology, Dhaka, 1000, Bangladesh.
Heliyon
|September 19, 2024
概括
这项研究分析了使用混合纳米流体在盖子驱动空腔中的热传递. 增加纳米粒子度 (φ) 和流量参数 (Ri,Re) 会增强热传递,而磁场 (Ha) 会减少热传递.
科学领域:
- 流体动力学 流体动力学
- 热传递热量转移的方法
- 纳米流体 纳米流体
背景情况:
- 灵敏度分析对于理解参数对传热的影响至关重要.
- 数字模拟对于分析复杂的热现象至关重要.
研究的目的:
- 在带有磁场的盖子驱动方形腔中对混合对流进行灵敏度分析.
- 为了研究关键无维参数对混合纳米流体填充腔内含有星形障碍物的热传输的影响.
主要方法:
- 使用加勒金加权剩余有限元素方法进行数值模拟.
- 统计响应表面方法 (RSM) 用于灵敏度分析.
- 解决控制流体流动和热传输的部分微分方程 (PDEs).
主要成果:
- 随着理查森数 (Ri),雷诺兹数 (Re) 和纳米粒子体积分数 (φ) 的增加,观察到平均传热率的上升趋势.
- 随着哈特曼数 (Ha) 的增加,平均传热率的下降趋势被观察到.
- 平均传热量增加了49.54%的φ (1%到10%) 和下降了5.97%的Ha (0到60).
结论:
- 这项研究提供了关于控制这些系统中的热传输的见解.
- 开发的模型准确地预测了高R2值 (98.72%) 的热传递 (Nu).
- 这些发现对于优化微流体设备和热交换器的热性能具有价值.
相关概念视频
Response Surface Methodology
95
Response Surface Methodology (RSM) is a collection of statistical and mathematical techniques used to develop, improve, and optimize processes. It is particularly valuable when many input variables or factors potentially influence a response variable.
The process of RSM involves several key steps:
The process of RSM involves several key steps:
95
Typical Model Studies
344
Fluid mechanics model studies often utilize scaled-down systems to predict fluid behavior in full-scale environments, such as river flows, dam spillways, and structures interacting with open surfaces. Maintaining Froude number similarity in river models is crucial, as it replicates surface flow features like wave patterns and velocities.
344
Conduction, Convection and Radiation: Problem Solving
1.2K
There are three methods by which heat transfer can take place: conduction, convection, and radiation. Each method has unique and interesting characteristics, but all three have two things in common: they transfer heat solely because of a temperature difference; and the greater the temperature difference, the faster the heat transfer.
In order to solve a problem related to heat transfer, first of all, the situation needs to be examined to determine the type of heat transfer involved. This could...
In order to solve a problem related to heat transfer, first of all, the situation needs to be examined to determine the type of heat transfer involved. This could...
1.2K


