浮力驱动的流量用于在多层开放空洞中的垂直墙壁上的表面反应
1Department of Mathematics, University of Dhaka, Dhaka 1000, Bangladesh.
Heliyon
|January 14, 2025
概括
这项研究检查了多层腔中的表面反应,发现更高的雷利数会降低温度和氧气. 像易斯数和热释放等参数显著改变了流量和度分布.
科学领域:
- 多物理模拟模型
- 热量和质量转移是热量和质量转移.
- 化学反应工程 化学反应工程
背景情况:
- 在各种工程应用中,封闭和开放腔中的自然对流在各种工程应用中至关重要.
- 了解流体流动,热传递和化学反应的相互作用对于优化系统性能至关重要.
- 以前的研究往往侧重于单个腔或更简单的反应模型,需要对复杂的多层系统进行研究.
研究的目的:
- 分析表面反应对垂直导向的多层腔中的自然对流量,温度和氧气度的影响.
- 开发和验证用于模拟这些复杂现象的数学模型.
- 调查关键参数如雷利数,浮力力,易斯数和热释放对系统行为的影响.
主要方法:
- 制定一个具有适当边界条件的数学模型.
- 管理方程的无维变换.
- 使用有限元法 (FEM) 的数值解决方案.
- 通过Poisson方程计算流函数.
主要成果:
- 增加的雷利数会导致更高的最大流函数,但更低的最大温度和氧度.
- 浮力力和易斯数增强流的功能和温度,同时降低氧气度.
- 易斯数和反应剂消耗参数显著改变了空腔流动结构.
- 热释放参数增加最大的流功能和温度.
- 更宽的开口导致更高的流功能和氧气度,对温度有非单调的影响.
- 最大流量强度始终发生在顶腔的底部开口附近.
结论:
- 表面反应极大地影响了多层腔中的运输现象.
- 系统性能对雷利数,易斯数和热释放的变化敏感.
- 该研究为优化设计提供了有价值的见解,该设计涉及复杂几何结构中的自然对流和化学反应.
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