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本文介绍高压高温水通过9根正方形排列的棒束及棒束定位架时的流动阻力特性实验研究.水强迫垂直向上流过棒束.分别进行了棒束不加热的单相流动实验和棒束均匀加热并出现汽液两相流动时的两相流动实验.单相及两相实验的参数范围:P=140公斤(力)/厘米~2,质量流速 ω~g=(1.5—8)×10~6公斤/米~2小时,雷诺数 Re=3×10~3—1.5×10~5,热流密度q=(0.2—1.3)×10~6千卡/米~2·小时,平均真实含汽量(?)=0.0002—0.23.在实验研究方法上,把欠热沸腾和饱和沸腾这两种工况都看成是两相流动工况,两种工况的实验数据用真实含汽量综合成统一的实验曲线和实验关系式.在测量技术方面,采用新设计的引压装置把压差信号从高压高温实验通道测孔处引入压差计.测取的信号可靠,测量误差小.实验数据全部用计算机处理.经过综合、分析、整理后,得到棒束摩阻实验曲线和实验关系式及定位架的形阻实验曲线.
In this paper, an experimental study on the flow resistance characteristics of high pressure and high temperature water passing through nine square rods and rod holders was carried out.Water was forced to flow vertically upward through the rod bundle.The single-phase flow without sticking Homogeneous heating and two-phase flow experiment of vapor-liquid two-phase flow appeared.Phase range of single-phase and two-phase experiment: P = 140 kg / cm ~ 2, mass flow rate ω ~ g = 1.5-8 × Reynolds number Re = 3 × 10 ~ 3-1.5 × 10 ~ 5, heat flux density q = (0.2-1.3) × 10 ~ 6 kcal / m ~ 2 · h, average real (?) = 0.0002-0.23. In the experimental method, both the under-boiled and saturated boiling conditions are considered as two-phase flow conditions. The experimental data of the two operating conditions are obtained with real steam The amount of integrated into a unified experimental curve and experimental relationship.In the measurement technology, the use of the new design of the pressure device to the pressure signal from the high pressure and high temperature experimental channel measurement hole into the differential pressure gauge. The measured signal is reliable, the measurement error is small All the experimental data were processed by computer.After the synthesis, analysis and finishing, we get the experiment curve of rod friction and experimental relation and the position of the rack Resistance experimental curve.