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为了在10MW高温气冷堆中引入弯头传感器,通过实验和数值模拟的方法对90°弯头内流体的流动特性进行了研究,以实验获得的弯头内弧面和外弧面上的压力分布数据来对CFD模型计算的可信性进行评估,并应用验证后的CFD模型对高温气冷堆蒸汽发生器内90°弯头处氦气的流动特性进行数值模拟。通过对比实验数据和CFD模拟结果发现,实验结果与数值模拟结果基本趋于一致,90°弯头内、外弧面的压力呈现明显的不均匀分布现象,在弯曲角度α=30°~50°之间,内、外弧面的压力差达到最大值并持续保持一段位置,k-ω模型能用于预测10 MW高温气冷堆蒸汽发生器内90°弯头处氦气的流动特性。
In order to introduce the elbow sensor into the 10MW high temperature gas cooled reactor, the flow characteristics of the fluid in the 90 ° elbow were studied by means of experiment and numerical simulation. The pressure on the inner and the outer arc of the elbow Distribution data to evaluate the credibility of the CFD model calculations and the numerical simulation of the flow characteristics of helium at 90 ° elbow in the HTGR steam generator with the verified CFD model. By comparing the experimental data with the CFD simulation results, it is found that the experimental results are in good agreement with the numerical simulation results. The pressure inside and outside the 90 ° elbow shows obvious non-uniform distribution. When the bending angle α = 30 ° ~ 50 ° K-ω model can be used to predict the flow characteristics of helium at 90 ° elbow in the 10 MW HTR steam generator.