就无机水合盐的过冷机理及非均匀形核的动力学机理进行了探讨,加入成核剂是降低过冷度的有效措施。
This paper discusses the nucleating mechanisms of the salt hydrates and comes to the conclusion that adding suitable nucleating agents reduces significantly the degree of supercooling.
从主冷凝器的特性出发,对真空-凝水过冷度控制系统进行了深入地研究,详细阐述了系统的设计准则、设计模型及实现方法。
Based on character of host condensator, degree of super-cooling of vacuum-condensed water is researched. System design rule, model and realization method are illustrated in detail.
模型中小面区域的动力学系数与界面上的过冷度及取向角均有关。
The kinetic coefficient used in this model along the facet region is related both to local undercooling and to local crystallographic orientation.
文中首先对上述各因素对凝汽器最佳真空的影响进行了分析,给出了凝汽器真空变化后凝结水过冷度及凝结水含氧量的计算方法。
In this paper, the influences of these factors on the optimum vacuum are analyzed firstly, and the calculation method of condensate subcooling degree and the dissolved oxygen in condensate are given.
钢水的凝固过程是晶核的形成及长大过程,而晶核的形成则依靠钢水的过冷度和钢水中的固体质点。
The solidification process of liquid steel is forming and growing pro cess of crystal nucleus, and formation of crystal nucleus depends on overcooling degree and solid particles in liquid steel.
通过讨论过冷度的变化对形核率的影响,研究了电流产生的电磁力效应及焦耳热效应对过冷度的影响,建立了电流与过冷度的关系式。
According to classical solidification theory and the mechanism of solidification microstructure under pulse current, the effect of super-cooling degree variation on nucleation rate was discussed.
该模型考虑了气、液膜之间的质量连续及能量连续特征。 对于不同的壁面过冷度,用数值方法首次求解并分析了边界层内局部不凝气体质量分数、温度和速度的分布规律。
The vapor liquid two boundary layer model is applied to predict local mass concentration of the non condensable gas, temperature profiles and velocity profiles in the boundary layer.
在模拟中,研究了搅动及不同的过冷度对枝晶生长形貌的影响,并对相场和浓度场作了对比和分析。
In simulation, studied the noise and different surperfluous temperature how to affect the growth of dendritic and compared phase-field figure with concentration field figure.
在模拟中,研究了搅动及不同的过冷度对枝晶生长形貌的影响,并对相场和浓度场作了对比和分析。
In simulation, studied the noise and different surperfluous temperature how to affect the growth of dendritic and compared phase-field figure with concentration field figure.
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