CAJ | 학술논문

为了在10 M W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C FD模型计算的可信性进行评估，并应用验证后的C FD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C FD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 M W高温气冷堆蒸汽发生器内90°弯头处氦气的流动特性。
위료재10 M W고온기랭퇴중인입만두전감기，통과실험화수치모의적방법대90°만두내류체적류동특성진행료연구，이실험획득적만두내호면화외호면상적압력분포수거래대C FD모형계산적가신성진행평고，병응용험증후적C FD모형대고온기랭퇴증기발생기내90°만두처양기적류동특성진행수치모의。통과대비실험수거화C FD모의결과발현，실험결과여수치모의결과기본추우일치，90°만두내、외호면적압력정현명현적불균균분포현상，재만곡각도α＝30°～50°지간，내、외호면적압력차체도최대치병지속보지일단위치，k‐ω모형능용우예측10 M W고온기랭퇴증기발생기내90°만두처양기적류동특성。
In order to apply the elbow sensor in 10 MW High Temperature Gas‐cooled Reactor (HTR‐10) ,both of experimental measurements and numerical simulation were utilized to research the fluid flow characteristics in a 90° elbow pipe .The experimental data about the pressure distribution on the intrados and extrados of the elbow were used for validating the credibility of the computational approach and then the helium flow characteristics in the 90° elbow of the steam generator of HTR‐10 were simulated with the verified CFD model .Both measured and predicted wall static pressure distributions of 90° elbow are in satisfactory agreement .The pressure on the intrados and extrados performs an asymmetrical distribution according to the numerical and experimental results ,and the pressure difference approaches its maximum on the cross sections of elbow arch betw een angles α= 30°‐50° . T he main flow characteristics in the elbow of HTR‐10 can be successfully captured using CFD method .