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July 19, 2015, 13:38 |
Theoretical problem:entropy & pressure
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#1 |
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I'm learning this book<Computational Fluid Dynamics The Basics with Applications>John D.Anderson,JR
I have some questions in section7.6.1 1.wath's the relationship between entropy & pressure?(why pressure is constant while entropy is constant? Why p02<p01 while s2>s1?) 2.Why A1*=At,obviously,they are not equal in FIG 7.22 ? [IMG]https://drive.google.com/file/d/0B5r9Dn4RejRLTHZOakhReUdCZmM/view?usp=sharing https://drive.google.com/file/d/0B5r9Dn4RejRLRE9CNUJwYmFKRVU/view?usp=sharing[/IMG] Last edited by Sun Yachuan; July 19, 2015 at 13:39. Reason: email |
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July 27, 2015, 15:38 |
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#2 |
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Join Date: Dec 2012
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Hi
you're in the wrong forum. Anyway: 1. It says the total pressure is constant. The pressure does change indead. 2. A* is the sonic throat, which is At berfore the shock. A* is just the area at which you reach Ma=1 for the first time. |
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entropy, pressure, theoretical |
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