A new method is described for measuring the average void fraction of a one-component two-phase flow moving in a channel with a fixed porous aggregate. The known method of cutting off the flow is used but, in contrast, the vapor phase in the cut-off volume is transferred to the condensed state, and the released space is filled with the measured amount of additional fluid. The result of verification using this method is presented for the previously proposed formula for calculating the void fraction of the adiabatic steam-water flow in a channel with a fixed bed of spherical particles.

中文翻译：

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用多孔介质测量通道中空隙率的方法

描述了一种用于测量在具有固定多孔聚集体的通道中移动的单组分两相流平均空隙率的新方法。使用已知的切断流量的方法，但是相反，切断体积中的气相被转移到冷凝状态，释放的空间中充满了所测量的附加流体量。对于先前提出的公式，使用该方法进行验证的结果已给出，该公式用于计算在具有球形颗粒固定床的通道中绝热蒸汽-水流的空隙率。