热量产生和辐射对依赖时间的免费MHD对流式运输的辐射效应,通过垂直透气板进行对流式运输
Md Hasanuzzaman1, Munzila Akter Labony1, Md Mosharof Hossain2
1Department of Mathematics, Khulna University of Engineering & Technology, Khulna, 9203, Bangladesh.
Heliyon
|October 23, 2023
概括
本研究检查了MHD对流在垂直板上的热传递,发现热生成/吸收显著影响热边界层. 增加热量吸收或热量产生会增加热边界层厚度和皮肤摩擦.
科学领域:
- 流体动力学 流体动力学
- 热传递热量转移的方法
- 磁性水电动力学 (MHD) 是一个学科.
背景情况:
- 自由对流流在许多工程应用中至关重要.
- 了解热吸收/热生成效应对于热管理至关重要.
- 热辐射显著影响对流动流中的热传递.
研究的目的:
- 为了研究热吸收/热生成对时间依赖的免费MHD对流式运输的影响.
- 分析热辐射与热量产生/吸收的作用.
- 探索各种无维参数对流量特性的影响.
主要方法:
- 在垂直多孔板上对流传的数学建模.
- 用相似性分析将部分微分方程 (PDEs) 转换为普通微分方程 (ODEs).
- 使用有限差异方法 (FDM) 得到的ODEs的数值解.
主要成果:
- 增强的热吸收或热生成,加上热辐射,增加了热边界层的厚度.
- 将热吸收/热生成 (Q) 从1.0增加到2.0将皮肤局部摩擦系数提高11%,并将传热率降低85%.
- 将辐射参数 (R) 从1.0增加到4.0将皮肤局部摩擦系数提高13%,并将传热率降低41%.
结论:
- 热的吸收/产生和热辐射是影响对流热传输的关键因素.
- 该研究为优化热量产生或吸收系统的热性能提供了有价值的见解.
- 数字结果与现有已发表的数据进行了验证.
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