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Design and Tests of a Device for the Generation of Controlled Condensation Implosion Events

机译:产生受控冷凝内爆事件的装置的设计和测试

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摘要

A test facility has been constructed of which the purpose is to explore the characteristics of a thermo- hydraulic component (a "pulser") where condensation implosion events can be initiated in a controlled and reproducible manner. This paper summarizes experiments conducted in a horizontal cylindrical pulser. For design purposes, a modified Jakobs number criterion was defined. It is an index measuring the capability of the pulser water to condense all of the initial pulser steam that takes into account the heat capacity of the pulser metal and heating of water by condensation. The tests showed that in order to achieve a rapidly growing condensation rate that exceeds the inertial time constant of the vapor phase, the modified Jakobs number has to approach a value of 5. For a 0.027 m~3 volume cylindrical pulser, this can be achieved when the steam contains residual amounts of air (on the order of 0.02 to 0.03 mole fraction). The paper presents experimental results characterizing the dynamic response of the pulser as a function of the liquid side turbulence.
机译:已经建造了一个测试设备,其目的是探索热液部件(“脉冲器”)的特性,在该特性中可以以可控制的方式复制冷凝物内爆事件。本文总结了在卧式圆柱形脉冲发生器中进行的实验。为了设计目的,定义了修改的雅各布斯数准则。它是衡量脉冲发生器水冷凝所有初始脉冲发生器蒸汽的能力的指标,其中考虑了脉冲发生器金属的热容量和冷凝水加热的能力。测试表明,为了实现快速增长的凝结速率超过气相的惯性时间常数,修正的雅各布斯数必须达到5的值。对于0.027 m〜3体积的圆柱形脉冲发生器,可以实现这一点。当蒸汽中含有残留量的空气(摩尔分数约为0.02至0.03)时。本文介绍了表征脉冲发生器动态响应随液侧湍流变化的实验结果。

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