CAJ | 학술논문

分析简化预旋系统的流路和典型工况下接受孔附近流场，建立预测接受孔周向速度系数的数学模型，在一系列工况下对盖板预旋系统进行了CFD分析，并将计算结果和模型预测结果进行对比，证明采用该模型预测周向速度系数的有效性。研究结果表明：接受孔内流动按流动形态可以分为3个区域，影响因素主要有旋流比、长细比和进气攻角，结合几何关系建立了数学模型，在预测周向速度系数时可达到一定精度；与原始模型相比，利用周向速度系数模型修正接受孔元件后，一维流路的预测结果和CFD计算结果吻合较好。
분석간화예선계통적류로화전형공황하접수공부근류장，건립예측접수공주향속도계수적수학모형，재일계렬공황하대개판예선계통진행료CFD분석，병장계산결과화모형예측결과진행대비，증명채용해모형예측주향속도계수적유효성。연구결과표명：접수공내류동안류동형태가이분위3개구역，영향인소주요유선류비、장세비화진기공각，결합궤하관계건립료수학모형，재예측주향속도계수시가체도일정정도；여원시모형상비，이용주향속도계수모형수정접수공원건후，일유류로적예측결과화CFD계산결과문합교호。
Simplified pre-swirl system and flow field nearby receiver hole under typical conditions were analyzed.Based on the consequences,circumferential velocity ratio model of receiver hole was constructed.CFD analysis was carried out through a series of typical conditions.Result of comparing to CFD data demonstrates the model prediction is effective.Current study results show that:based on flow pattern inside receiver hole,this area was divided into 3 regions,influencing factors including swirl ratio,length-radius ratio and attack angle,the model to predict circumferential velocity ratio was proved to be enough accuracy.In contrast to the original receiver hole component model,that modi-fied by circumferential velocity ratio makes better coincide with CFD data.