新型数值和人工神经计算与实验验证对不稳定的微极纳米流体在里加板块的流动进行实验验证
Muhammad Bilal1, F Maiz2, Muhammad Farooq1
1Sheikh Taimur Academic Block-II, Department of Mathematics, University of Peshawar, Peshawar, Khyber Pakhtunkhwa, 25120, Pakistan.
Scientific reports
|January 4, 2025
概括
本研究调查了里加板上不稳定的微极纳米流体流动,发现像哈特曼数和浮力力这样的参数可以提高流速. 该模型实现了高精度的能量,速度和度预测.
科学领域:
- 磁性水电动力学 (MHD) 是一个学科.
- 边界层理论 边界层理论
- 纳米流体动力学是什么
背景情况:
- 里加板技术操纵边界层以控制流体流动.
- 了解磁化表面上的流体行为对于空气动力学和热传输至关重要.
- 微极纳米流体为先进的应用提供了独特的质性质.
研究的目的:
- 分析不稳定的微极纳米流体 (UMNF) 在垂直导向的,非线性可拉伸的里加板上流动.
- 为了研究可变导热率,热泳力和布朗扩散的影响.
- 评估物理约束对流量和传热特性的影响.
主要方法:
- 非线性局部微分方程 (PDEs) 用相似性转换被制定并归化为普通微分方程 (ODEs).
- 采用了使用莱文伯格-马奎特反向传播 (LMBP) 技术训练的人工神经网络 (ANN).
- 数字模拟生成了用于培训和验证的数据,结果与已公布的数据进行了比较.
主要成果:
- 通过增加哈特曼数,浮力力和速度滑动参数来提高流速.
- 无维度的温度,度,微旋转和速度分布被图形分析.
- 皮肤摩擦,谢伍德和努塞尔特数被计算并以数字形式呈现.
结论:
- UMNF流模型表现出高精度,平均数值误差为10−9.
- 该研究提供了一个验证的数值框架,用于分析里加板块上的复杂流体流.
- 这些发现对于优化MHD和纳米流体应用中的热量和质量转移至关重要.
相关概念视频
01:17Steady, Laminar Flow Between Parallel Plates
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Understanding steady, laminar flow between parallel plates is essential for analyzing and designing flow in narrow rectangular channels, commonly found in various water conveyance and drainage systems. The Navier-Stokes equations govern fluid motion and are generally challenging to solve due to their nonlinearity. However, simplifications are possible in certain cases, like the steady laminar flow between parallel plates. For this scenario, we assume steady, incompressible, laminar flow.
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01:30Typical Model Studies
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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.
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