CAJ | 학술논문

根据能量平衡方程计算了叶片倾角与容量系数的数值关系，基于CAD和CFD技术，建立了缓速器工作流道的三维模型，采用 RNG k-ε湍流模型模拟工作轮内部流场，分析了叶片倾角为40°，50°和60°时液体的翼面静压和湍流动能的分布规律，并利用有限体积法计算得到容量系数的数值。研究表明：叶片倾角为50°时，容量系数数值最小，其原因是叶片冲击引起的湍流最强，液流阻力最大。
근거능량평형방정계산료협편경각여용량계수적수치관계，기우CAD화CFD기술，건립료완속기공작류도적삼유모형，채용 RNG k-ε단류모형모의공작륜내부류장，분석료협편경각위40°，50°화60°시액체적익면정압화단류동능적분포규률，병이용유한체적법계산득도용량계수적수치。연구표명：협편경각위50°시，용량계수수치최소，기원인시협편충격인기적단류최강，액류조력최대。
Capacity factor was introduced to hydraulic retarder ,and the relationship between blade an-gle and capacity factor was calculated according to equation of conservation of energy .3D model of hy-draulic retarder working passage was built and using RNG k-εturbulence model ,pressure and turbu-lent kinetic energy distribution of the turbulent flow in hydrodynamic retarder were given with the blade angle of 40° ,50° and 60° .Researches showed that when the blade angle was 50° ,the value of ca-pacity factor was the smallest ,because of maximum liquid flow resistance caused by turbulent flow .