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the development of poiseuille flow of a pseudoplastic fluid

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110<br />

M.A.M. Al Khatib<br />

From <strong>the</strong> above results and <strong>the</strong> velocity pr<strong>of</strong>iles in Figures 2, 3, and 4, we conclude that when k>1, Re(α)<br />

goes to a non-zero value as n → 0. On <strong>the</strong> o<strong>the</strong>r hand, when k>1, Re(α) → 0asn → nmin > 0, which implies<br />

that <strong>the</strong> parallel <strong>flow</strong> is unstable for 0

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