Heat transfer in stagnation-point flow of a Jeffrey fluid past a lubricated surface

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作者
Khalid Mahmood
Muhammad Noveel Sadiq
Muhammad Sajid
Nasir Ali
机构
[1] International Islamic University,Department of Mathematics and Statistics
来源
Journal of the Brazilian Society of Mechanical Sciences and Engineering | 2019年 / 41卷
关键词
Power-law fluid; Jeffrey fluid; Interfacial conditions; Stagnation-point flow; Keller box method; Heat transfer;
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摘要
In this manuscript, heat transfer in flow of Jeffrey fluid past a lubricated surface near a stagnation point is considered. A shear-thinning (power-law) fluid is utilized for the lubrication purpose. The interfacial conditions are developed by applying the continuity of velocity and shear stress of Jeffrey and power-law fluids. Similarity solutions are obtained by selecting power-law index as 0.5. Approximate numerical results are achieved using Keller box scheme. Effects of involved parameters in the presence of lubrication are expressed by graphs and tables. It is found that the lubricant enhances the effects of the retardation parameter while opposes the ratio parameter effects. The temperature is reduced in the presence of the lubricant.
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