Numerical Simulation on Near Wall Fluid Temperature of Non-Isothermal Jet with Cross-Flow for Safety Injection Inclined Tube in Reactors
-
摘要: 针对反应堆主管道45°安注斜接管嘴,基于1:9的比例模型,采用计算流体力学程序(CFX)软件,进行了常压条件下安注斜接管嘴主、射流温差分别为30℃和70℃、射流和主流的流速比为0.87～40、构件不同区域内非等温横向射流时的壁温变化及其分布特征的数值模拟研究,得出了构件内主接管相交区、射流下游区、主管侧面区及主管底部各区域测点近壁流体的混合函数。通过对射流与主管流体两种温差下各区域测点混合函数的比较发现,在本次研究中,30℃、70℃两种温差下各点混合函数基本保持不变,各点混合函数的大小与温差关系不大。将本文混合函数的计算结果与同期试验结果进行了比较,二者符合良好。Abstract: In order to obtain the characteristics of the near wall fluid temperature variation and distribution of non-isothermal jet with cross-flow for the safety injection（SI） inclined tube with 45°angle in reactor,the numerical simulations were carried out at the velocity ratio range from 0.87 to 40 and when the temperature differences between jet flow and main flow were 30 and 70℃.The numerical simulations were performed at 1/9-scale model using the commercial computational fluid dynamics software CFX.Based on the calculation results,the mixing function of near wall fluid in different regions of SI inclined tube was obtained.Through the comparison of the mixing function of near wall fluid in different region at 30 and 70℃temperature differences,it was discovered that the mixing function values of each measurement point at 30 and 70℃temperature differences were basically changeless,namely,the effect of the temperature difference on the mixing function of each measurement point was small.The calculation results of the mixing function agreed well with the test ones.
-
计量
- 文章访问数: 7
- HTML全文浏览量: 3
- PDF下载量: 0
- 被引次数: 0
下载:
