多孔弯曲环形板表面粗糙度的MHD和耦合应力流体研究

IF 0.6 Q3 ENGINEERING, MULTIDISCIPLINARY

Acta Polytechnica Pub Date : 2022-12-31 DOI:10.14311/ap.2022.62.0574

Salma Alla Baksh, Hanumagowda Bannihalli Naganagowda

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引用次数: 1

摘要

本文的目的是研究在磁场作用下，表面粗糙度对耦合应力流体润滑多孔弯曲环形板的影响。利用Christensen随机模型推导了mhd -随机Reynolds方程，并将其应用于多孔弯曲环形板的挤压膜特性预测。解析得到了压膜压力、承载能力和压膜时间的表达式，讨论了不同工作参数值下的计算结果，并绘制了图形。研究发现，在外加磁场作用下，非牛顿流体改善了多孔弯曲环形板的挤压膜特性。与光滑情况相比，粗糙度参数的作用是增加(减少)方位(径向)粗糙度配置的挤压膜属性。此外，与无孔情况相比，渗透率参数的影响是降低了压力、承载能力和挤压膜时间。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Study of surface roughness with MHD and couple stress fluid on porous curved annular plates

The purpose of this article is to examine the effect of surface roughness on porous curved annular plates lubricated with couple stress fluid in the presence of magnetic field. The MHD-Stochastic Reynolds equation is derived using Christensen’s stochastic model and applied to predict the squeeze film characteristics of porous curved annular plates. The expressions for squeeze film pressure, load-carrying capacity, and squeeze film time are obtained analytically, the results are discussed for various values of operating parameters, and are plotted graphically. It is found that the squeeze film characteristics of porous curved annular plates are improved using a non-Newtonian fluid in the presence of an external magnetic field. The effect of roughness parameter is to increase (decrease) the squeeze film attributes for azimuthal (radial) roughness configuration as compared to the smooth case. Furthermore, the effect of permeability parameter is to decrease the pressure, load-carrying capacity, and squeeze-film time as compared to the non-porous case.

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来源期刊

Acta Polytechnica ENGINEERING, MULTIDISCIPLINARY-

CiteScore

1.90

自引率

12.50%

发文量

审稿时长

24 weeks

期刊介绍： Acta Polytechnica is a scientific journal published by CTU in Prague. The main title, Acta Polytechnica, is accompanied by the subtitle Journal of Advanced Engineering, which defines the scope of the journal more precisely - Acta Polytechnica covers a wide spectrum of engineering topics, physics and mathematics. Our aim is to be a high-quality multi-disciplinary journal publishing the results of basic research and also applied research. We place emphasis on the quality of all published papers. The journal should also serve as a bridge between basic research in natural sciences and applied research in all technical disciplines. The innovative research results published by young researchers or by postdoctoral fellows, and also the high-quality papers by researchers from the international scientific community, reflect the good position of CTU in the World University Rankings. We hope that you will ﬁnd our journal interesting, and that it will serve as a valuable source of scientiﬁc information.