Effects of the side walls on the unsteady flow of a second-grade fluid in a duct of uniform cross-section |
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Authors: | MEmin Erdo?an |
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Institution: | Makina Fakültesi, ?stanbul Teknik Üniversitesi, Gümü?suyu, ?stanbul 34439, Turkey |
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Abstract: | In this paper, the effects of the side walls on the unsteady flow of a second-grade fluid in a duct of rectangular cross-section are considered. Two types of unsteady flows are investigated. One of them is the unsteady flow in a duct of rectangular cross-section moving parallel to its length and the other is the unsteady flow due to an applied pressure gradient in a duct of rectangular cross-section whose sides are at rest. It is shown that a Newtonian fluid reaches steady-state earlier than a second-grade fluid and the effect of the side walls on a second-grade fluid is more effective than that on a Newtonian fluid. |
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Keywords: | Second-grade fluid Unsteady flow Rectangular duct Effect of the side walls |
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