带叶片滑移的叶片涂层过程中磁流体粘弹性流体的流变学和热传递

Z Abbas, M Javed, A Hanif, MY Rafiq, S Khaliq
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引用次数: 0

摘要

叶片涂层是一种广泛应用的技术,它通过在运动基体上涂覆一层来自叶片的保护性流体层来实现光滑表面。在叶片涂层现象下,讨论了平面和指数涂层器的 MHD、速度滑移和第三级流体热分布的影响。采用润滑近似理论求解非线性方程,并利用称为射击技术的数值方法表征压力、压力梯度、速度和热分布。对滑移参数、第三级流体、涂层厚度和 MHD 等众多参数进行了数值研究,以显示其对流体流动的影响,并用几幅图和表进行了显示。结果证明,流体的粘弹性以及 MHD 和粘性滑移是压力和叶片载荷的控制参数,导致涂层厚度的变化,这可能有助于提高基体寿命和高效涂层工艺。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Rheology of magnetohydrodynamic viscoelastic fluid flow and heat transfer during the blade coating process with blade slip
Blade coating is a widely used technique for achieving smooth surfaces by applying a protective fluid layer from the blade onto the moving substrate. Under the blade coating phenomena, the impacts of MHD, velocity slip, and heat distribution of the third-grade fluid for both planar and exponential coaters are taken into discussion. Lubrication approximation theory is employed for solving nonlinear equations, while the numerical method known as the shooting technique is utilized to characterize pressure, pressure gradient, velocity, and heat distribution. Numerous parameters including the slip parameter, third-grade fluid, coating thickness, and MHD are numerically investigated to show the effect on fluid flow and shown in several graphs and tables. The results prove the viscoelastic nature of fluid along with MHD and viscous slip to be controlling parameters of pressure and blade load which lead to varying coating thickness, which may help in achieving improved substrate life and efficient coating process.
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