论文部分内容阅读
现有的实验准则式存在着分岐。但由于采用的整理方案不同,难于直接比较。文章探讨了比较现有实验准则式的最便利的整理方案;重新整理了不同介质、不同温压及热流方向的实验数据。在流动层流的区段内,获得下列准则式:沿横园柱放热,N(?)w=0.50(Gr·Pr)_w~(1/4)沿平坚壁放热,N(?)w=0.57(Gr·Pr)_w~(1/4)这种准则式概括了现有实验范围的各种数据,并且仍保待了不加修正系数的简单形式。文章根据新整理方案获得的结果,肯定了沿横园柱放热与沿平坚壁放热二种准则式的实用差别,并进一步讨论了沿平坚壁放热与沿坚园柱放热的差别及准则式的适用范围。
Existing experimental guidelines exist differences. However, due to the different finishing options, it is difficult to directly compare. The article discusses the most convenient collation scheme comparing the existing experimental guidelines, and rearranges the experimental data of different media, different temperature and pressure and heat flow direction. In the section of the mobile laminar flow, the following criterion is obtained: Exothermic along the horizontal cylinder, N (?) W = 0.50 (Gr · Pr) _w ~ w = 0.57 (Gr · Pr) _w ~ (1/4) This guideline summarizes the various data for the current experimental range and still treats simple forms without correction. Based on the results obtained from the new finishing plan, the article affirms the practical differences between the two types of criterion along the horizontal circular column and the exoskeleton, and further discusses the differences between the exothermic along the flat wall and the exhumation along the Jian-Xian column The standard scope of application.