摘要
纵向涡发生器由于结构简单,生成的纵向涡作用距离远,强化传热效果明显,适合应用在狭窄通道的平行表面上。基于窄间隙矩形通道的流道结构特点,参考圆管环状流临界热流密度(CHF)预测解析模型和肋化通道传热模型,构建了带矩形块纵向涡发生器窄间隙矩形通道内的CHF预测模型,并用带4对矩形块纵向涡发生器窄间隙矩形通道内的CHF实验数据对模型进行了校核,模型预测精度良好。
With relative long influence distance and simple structure, the longitudinal vortex generators(LVGs) can be used in narrow channels with fiat surface. On the basis of an annular flow prediction model for Critical Heat Flux(CHF) and a heat transfer model respectively used in smooth and ribbed circular tube, a new CHF prediction model in rectangular narrow channel with 4 pairs of block LVGs is developed, and this model is validated by comparing with the present experimental data. The predictive accuracy of this model is good.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2013年第3期522-525,共4页
Journal of Engineering Thermophysics
基金
国家自然科学(No.50576089
No.51176176)
空泡物理和自然循环国家级重点实验室基金资助(No.9140C7101030602)
关键词
工程热物理
CHF
模型
纵向涡
窄间隙矩形通道
engineering thermophysics
CHF
model
longitudinal vortex
narrow rectangular channel