The formula of the critical pressure ratio for safety valve is proposed.

提出了一种由喷管临界压力比确定安全阀临界压力比的计算公式.

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The amplitudethe augments with the increasing NPR, which reaches its maximum on a critical pressure ratio.

当压比处于某一范围内时, 流场振幅最大,振荡最剧烈.

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The phenomenon is defined as sub - choking and the corresponding pressure ratio is defined as the sub - choking - critical - pressure - ratio.

本文将这一现象定义为亚堵塞现象,并将对应的压比定义为亚堵塞临界压比.

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