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colormax

新虫 (小有名气)

[求助] 求帮解个国外流体力学部分的考题已有1人参与

有没有好心人帮解个国外机械系流体力学部分的考题,答案知道了,求过程,中英文解答均可,谢谢了!


B1. A stream of air enters a diverging duct with a Mach number of 2.0, a static
pressure of 200 kPa, and a static temperature of 350 K. The area of the duct inlet is A1=0.25 m2 and the area of the exit is Ae=0.6 m2.
(a) Determine the pressure at the duct exit if the flow is entirely isentropic.
(答案:45.6kPa)
(b) The exit pressure is now increased and a normal shock wave forms at a
location in the duct where the cross section area is A2=0.35 m2.
Determine the new exit pressure.
答案:813kPa
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amoroso_xmc

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【答案】应助回帖

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colormax: 金币+5, 有帮助 2015-06-02 14:43:11
代入一维等熵流动的方程,直接计算
2楼2015-06-01 22:35:08
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