Effect of non-condensable gas on pressure oscillation of submerged steam jet condensation in condensation oscillation regime

Effective momentum induced by steam condensation in the oscillatory bubble regime

“…The quasi-linear dependency with the subcooling is similar to what was observed in the experiments from Table 2. In the low steam mass flux experiments (S10 and S14), the dependency with the subcooling was inverted at about 60 o C. A similar behavior can be observed in [17], where experiments performed at 70-100 kg/(m 2 s) settled at an almost constant frequency at subcoolings above 70 o C.…”

“…12) and (13) to the experiments from Table 2 show a significant spread (Figure 13). According to Li et al [17] the collapsing frequencies are reduced significantly when steam is injected with air mass fractions of 1 %. The presence of air could be a possibility for this deviation.…”

“…However, it is not possible to determine which experiments from the literature could have been affected by this. Li et al [17] proposed a coefficient…”

“…Analytical and experimental observations of the bubble behavior was also done by Yuan et al [16] based on the Rayleigh-Plesset equation and force balances. The effect of non-condensable gases in the steam injection was investigated by [17], who observed a significant decrease of the collapsing frequencies at air mass fractions of 1 %.…”

Review on condensation heat transfer and pressure fluctuation characteristics of gas-liquid two-phase jet flow

“…少数学者采用VOF和LES耦合的方法对蒸汽射流 在水池中直接接触冷凝过程进行研究 [50,51] , 发现轴向 温度随管道出口中心线轴向速度的减小而升高, 压力 振荡主要受蒸汽速度的影响. Li等人 [59] 和Zhao等人 [60] 后缓慢增大. Li等人 [59] 还建立了压力振荡主频的预测 关联式, 见表3.…”