Heat Transfer Questions & Answers | |
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Hmm, this is well beyond the scope of this course and may confuse others (especially those who haven't taken the course compressible flow yet). I am not sure if the Eckert number is larger or lower within the boundary layer over a blunt body or cone.. You need to find the flow properties after the shock and compute the Eckert number using such properties..
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Yes, exactly. Indeed, recall the derivation of the Nusselt number: $$ \frac{\delta_t}{\delta} \propto {\rm Pr}^{-1/3} $$ Thus, the larger the Prandtl number, the smaller $\delta_t$ is compared to $\delta$. 1 point bonus.
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I don't understand well your logic and how this recovery factor can be obtained from the stagnation temperature equation (you should have explained this fully). But anyway, you define $r$ as the ratio between temperature differences, so this is one physical meaning of it — I don't see any other possible physical interpretation..
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You have to use LATEX for the math. Use an attached figure only for a schematic. Also, avoid breaking lines. One question is one paragraph (one idea). Breaking lines makes it hard for me to read your question.
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$\pi$ |