摘要
本文针对含有金属腐蚀物微粒的超临界压力水在竖直加热表面上自然对流的传热传质耦合问题,在变物性和第一类以及混合边界条件下进行了数值求解。揭示了超临界压力下层流自然对流传热和传质的机理,定量地分析了在超临界压力下物性的剧烈变化对传热和传质的影响,给出了计算自然对流传热和传质过程的准则关系式。
The deposit of the ferric corrosion products on surface of the tubes in boiler equipment or nuclear power station under the high pressure states will influence on operating economy of the equipment and even result in accident. The corrosion products of structure materials may be soluble or suspended in water after water treatment. The particles diameter is about 10-3- 10-1μm. Here the conjugate problem of natural convection heat and mess transfer on a heated vertical plate subject to the boundary conditions of the first kind or mixed for water containing of the ferric corrosion products in superoritical pressure states with consideration of the states dependence of the thermal properties was reported. The mechanism of the natural convection heat and mass transfer was revealed and the influence of the states dependence of the thermal properties was analyzed quantitatively in supercritical pressure states. A correlation for natural convection heat and mass transfer in this case was recommended in this paper.
出处
《计算物理》
CSCD
北大核心
1992年第3期293-302,共10页
Chinese Journal of Computational Physics
关键词
超临界压力
自由对流
传热
传质
particles of the ferric corrosion products, supercritical pressure, water, natural convection, heat and mass transfer.
