摘要
利用FLUENT内的EWF模型对大平板上液膜冲击附板时发生的一系列流动行为进行了三维数值模拟研究。分析了不同工况下大平板上不同流量下降液膜冲击不同宽度和厚度附板后的液膜损失,并对比了一定高度返回槽收集水量的实验值和模拟计算值,两者吻合程度较为良好。分析了液膜冲击附板的流动行为的4个过程,并通过分析附板尺寸和液膜流量对液膜冲击附板行为的影响,得到了液膜损失率与受附板高度影响的液膜溅射空间数和液膜冲击附板时的韦伯数之间的关系,发现EWF模型在模拟降液膜冲击不同焊缝高度的附板时存在不足。
In this paper,EWF model in FLUENT was used to set a 3-D simulation scheme to study a series of flow behaviors when liquid film impinged on the attached plate on large-scale plate.The loss of falling liquid film at different flow rates impinging on the different large-scale attached plates was analyzed,and the condensation flow rates of falling liquid film which were collected by the reserve tank were compared,which fit well.Four processes of the liquid film behavior were divided and analyzed,in addition,the influence of the size of attached plate and flow rate of liquid film was studied.Besides,the relationship between the loss rate of liquid film and liquid film splash space number,and liquid film We when the liquid film impinged on the attached plate was obtained.Moreover,the shortcoming of EWF model in simulating falling liquid film impinging on attached plates was observed,which were attached with different weld heights.
作者
胡真
胡珀
杨小杰
杜卡帅
HU Zhen;HU Po;YANG Xiaojie;DU Kashuai(School of Nuclear Science and Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;Shanghai Nuclear Engineering Research&Design Institute Co.,Ltd.,Shanghai 200233,China)
出处
《原子能科学技术》
EI
CAS
CSCD
北大核心
2020年第8期1378-1385,共8页
Atomic Energy Science and Technology
关键词
大平板
液膜
冲击
EWF模型
large-scale plate
liquid film
impingement
EWF model
