CAJ | 학술논문

基于Standard k-ε双方程湍流模型和三维时均N-S方程,进行了混流式水轮机HLA351长短叶片转轮流场的三维湍流数值模拟研究,获得了流道的流速和压强分布.计算结果表明:和常规转轮相比,长短叶片结合的转轮流态较好,流速和压强分布合理,水轮机的全流道CFD分析能够较为准确地预测出水轮机过流部件内的性能参数及内部流场结构.
기우Standard k-ε쌍방정단류모형화삼유시균N-S방정,진행료혼류식수륜궤HLA351장단협편전륜류장적삼유단류수치모의연구,획득료류도적류속화압강분포.계산결과표명:화상규전륜상비,장단협편결합적전륜류태교호,류속화압강분포합리,수륜궤적전류도CFD분석능구교위준학지예측출수륜궤과류부건내적성능삼수급내부류장결구.
The Standard k-ε double equation turbulent model and 3D time N-S equation were used to carry out the 3D turbulent numerical simulation study on the flow field of runners with long and short blades (HLA351) of mixed flow turbine and gained the flow speed and pressure intensity distribution in the flow channel. The results showed that compared to the common runner, the runner with long and short blades has better flow pattern and reasonable distribution of flow speed and pressure intensity. The CFD analysis on the whole channel of turbine can accurately forecast the properties parameters and internal flow field structure in the overflow parts of turbine.