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- departure nucleate boiling 偏离泡核沸腾
- It is possible that departure from nucleate boiling (DNB) will occur on the fuel rods or the pellet will melt in the accident. 该事故中,燃料棒表面可能发生偏离泡核沸腾(departure from nucleate boiling,简称DNB),导致燃料元件包壳烧毁;
- Departure from the Nucleate Boiling(DNB) is observed at the conditions with high heat fluxes in the vertical internally ribbed tube. 内螺纹管内的旋流效应消失，传热恶化提前，在高热负荷条件下，会发生第一类传热恶化。
- The judgments for the Onset of Nucleate Boiling (ONB) and Departure of Nucleate Boiling (DNB) in mean channel and hot channel were supplied in two codes. 两个程序中均提供了平均管及热管相应的过冷沸腾起始点(ONB)和偏离泡核沸腾(DNB)的判据和过冷沸腾裕度计算。
- Keywords: fractal, nucleate boiling, floc, biological aggregates. 关键词：碎形、核沸腾、胶羽、生物聚集体。
- R113 nucleate boiling experiment was conducted on a transparent ITO glass. 在透明的ITO玻璃上进行了R113的核态沸腾实验。
- Hence, forced convection plays a more important role in heat transfer of microscale flow boiling than nucleate boiling. 这是因为莫耳分率越小，对于甲醇/水混合系统，其前进接触角越大，使得气体较容易残留在人造孔穴中的缘故。
- Finally, boiling phenomena (such as nucleate boiling, noisy film boiling and silent film boiling) appeared. 最后，沸腾(如，核态沸腾，噪声沸腾和无噪声沸腾等)现象发生。
- Both gradual transition and sudden jumps between nucleate boiling and film boiling are properly interpreted in a mechanistic manner. 模型可适当地说明于核沸腾与模沸腾间逐渐转换、及不连续跳跃之转移现象。
- From vapor blanked stage to the nucleate boiling stage, there exists repeated moisture, which influences the conformity of the quench cooling process and quench hardness. 提出由蒸汽膜阶段向膜沸腾阶段转变的过程中，存在重湿润过程，重湿润过程影响淬火冷却的均匀性和淬火硬度的均匀性。
- A new dynamic microlayer model has been proposed to predict theoretically the heat flux in fully developed nucleate boiling regions including critical heat flux (CHF). 与以前的理论模型不同的是,微液层模型给出了传热面上气-液-固接触的动态构造。
- The experimental results show that in the pool nucleate boiling process the “effect of interfacial vaporization heat sink” obviously increases with the heat transfer flux. 实验结果表明,沸腾时,“界面汽化热阱”效应随热流率的提高而显著增大。
- The imposed electric field leads to the increase of the fluid movement inside the bubble and enhances the microlayer evaporation at the bottom of the bubble during the nucleate boiling heat transfer. 这表明外电场作用也有利于加剧气泡内部流体的运动，从而有助于核态沸腾换热过程中气泡底部微液层液体的蒸发。
- Wu, W.T., Yang, Y.M., and Maa, J.R., 1995, "Enhancement of Nucleate Boiling Heat Transfer and Depression of Surface Tension by Surfactant Additives," ASME J.Heat Transfer, Vol. 117, pp. 526-528. 吴武灿;1998;"界面活性剂水溶液中的池式沸腾传热机构;"国立成功大学化学工程研究所博士论文.
- It is known that surfactant additive has important effect to nucleate boiling, surfactant additive mainly intensifies the convection of fluid while it changes the attribution of bubbles. 添加界面活性剂的核沸腾在改变蒸气泡生长特性的同时，主要是强化了对流换热。
- The experimental study on the performance of nucleate boiling of R22 outside the surface enhanced evaporation tubes was conducted by use of four two-sides enhanced tubes with different geometries. 摘要介绍了表面增强型蒸发强化管，并对氟利昂制冷工质R22在该管外的沸腾换热进行了实验研究。实验通过对4根不同管型的蒸发强化管进行对比，分析了不同管型参数对管外换热系数的影响。
- He eld off his departure until his sister had come. 他推迟行期直到他妹妹来后才走。
- The cold weather antedate ed their departure. 寒冷的天气使他们提前离开。
- Her arrival coincided with our departure. 她来到时我们正好离开。
- A method based on mathematical morphology to identify the nucleation site density in high heat flux in nucleate boiling is presented. 摘要运用数学形态学提出了一种识别核态沸腾中高热流密度下汽化核心密度的算法。
