对流微极性流体流入量和渗透率对垂直板上加热速率和表皮摩擦特性的计算影响

Q1 Chemical Engineering International Journal of Thermofluids Pub Date : 2024-09-24 DOI:10.1016/j.ijft.2024.100885
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引用次数: 0

摘要

本手稿的优点在于研究了暴露于均匀热流入的多孔域内的嵌入式正交板,详细阐述了微极性流体因素和渗透特性如何影响边界层内的局部表皮摩擦、加热速率和角速度。在稳定、不可压缩和粘性条件下,板受到强迫对流微极性流体流入的影响。为便于可靠的数值求解,采用了相似性方法,将与所采用研究相关的耦合控制方程组转换为受约束的无量纲微分方程。计算分析使用 Matlab 函数 bvp4c 的 Runge-Kutta 方案来解决控制方程。研究结果以图表形式突出显示了微极性流体因素对局部表皮摩擦、加热率和角速度曲线的影响。与之前的研究结果相比,本研究结果具有很高的可接受性。研究发现,达西参数的增加会导致加热速率和局部表皮摩擦力呈线性下降。在所研究的因素中,降低表皮摩擦的基准参数是孔隙率。此外,还发现普朗特尔数和微旋转元素的增加会导致努塞尔特数的增加。由于孔隙率、达西、福克海默和微旋转元素的增加,一旦微旋转曲线在离板一定距离处受到干扰,微旋转曲线就会倒转。
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Computational influences of convection micropolar fluid influx and permeability on characteristics of heating rate and skin friction over vertical plate
This manuscript merits at examining of an embedded orthogonal plate inside porous domain exposed to uniform heat influx to elaborate on how micro polar fluid factors and permeability characteristic affect the local skin friction, heating rate, and angular velocity inside boundary layer. The plate is subjected to forced convective micro polar fluid influx under steady, incompressible, and viscous circumstances. To facilitate dependable numerical solution, similarity approach is implemented to mutate set of coupled governing equations relevant to the adopted study into a constrained dimensionless differential equations. Computational analysis has been executed hiring Runge-Kutta scheme by Matlab function bvp4c to settle the governing equations. Study's results are highlighted graphically the impact of micro polar fluid factors on the local skin friction, heating rate, and angular velocity curves. High degree of acceptability of present findings compare with prior research results. It is found that the rising of Darcy parameter drives to decrease linearly both heating rate and local skin friction. Among the examined factors, the benchmark parameter of decreasing skin friction is the porosity. Additionally, it is found that an increasing of Prandtl number and micro rotation element lead to enhance Nusselt number. Once curves of micro rotation are interfered at certain distance from the plate due to increase in porosity, Darcy, Forchheimer's, and microelement rotation, the micro rotation curves are inverted.
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来源期刊
International Journal of Thermofluids
International Journal of Thermofluids Engineering-Mechanical Engineering
CiteScore
10.10
自引率
0.00%
发文量
111
审稿时长
66 days
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