The fluid pressure pulse and flow-noise in water piping system decreased the operation safety of piping system and hiding ability of submarines.
水管路系统流体压力脉动及其引起的流噪声会降低管路系统自身工作的可靠性和舰船的隐蔽性。
Because velocity of flow reduces when the pressure pulse reduces, the noise of impulsion and the noise of vortex increase a little.
因为压力脉动减小导致流速增加，从而使冲击噪声和涡流噪声略有增加。
Capacitive pressure difference sensor is fixed in the center of the tube and connected with the pulse width modulation circuit so that capacitive flow transducer is made up.
把电容式差压传感器固定在管道中央，并配接脉冲调宽电路，即构成电容式流速变送器。
The algebraic expressions of enthalpy flux and mass flow rate in regenerator as well as the phase difference between pressure and mass flow rate at pulse tube cold end are presented.
得到了通过回热器的焓流、质量流量及脉管冷端压力和流量相位差的代数计算公式。
The algebraic expressions of enthalpy flux and mass flow rate in regenerator as well as the phase difference between pressure and mass flow rate at pulse tube cold end are presented.
得到了通过回热器的焓流、质量流量及脉管冷端压力和流量相位差的代数计算公式。
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