CAJ | 학술논문

为了研究分流叶片对微型离心式风泵性能的影响，对现有叶轮模型进行了流体力学数值研究。采用Realized k－ε湍流模型和SIMPLE算法，研究分流叶片的周向位置、长度、倾角以及长短叶片数等参数对离心式风泵性能的影响。在额定转速为5500 r／min且风量风压曲线的实验结果和计算结果吻合较好的情况下，对其进行了优化。仿真结果表明，对于现有叶轮模型，当分流叶片处于长叶片间周向位置4时、分流叶片进口直径Ds为叶轮外径Do的0．75倍、分流叶片内部斜边与离心式风泵轴线夹角为12．5°时，离心式风泵的性能较为优异。此外，计算结果还表明，在现有模型中，对分流叶片几何参数进行优化，长短叶片数目均为11时，该离心式风泵的性能有较明显的改善。
위료연구분류협편대미형리심식풍빙성능적영향，대현유협륜모형진행료류체역학수치연구。채용Realized k－ε단류모형화SIMPLE산법，연구분류협편적주향위치、장도、경각이급장단협편수등삼수대리심식풍빙성능적영향。재액정전속위5500 r／min차풍량풍압곡선적실험결과화계산결과문합교호적정황하，대기진행료우화。방진결과표명，대우현유협륜모형，당분류협편처우장협편간주향위치4시、분류협편진구직경Ds위협륜외경Do적0．75배、분류협편내부사변여리심식풍빙축선협각위12．5°시，리심식풍빙적성능교위우이。차외，계산결과환표명，재현유모형중，대분류협편궤하삼수진행우화，장단협편수목균위11시，해리심식풍빙적성능유교명현적개선。
In order to investigate the effect of splitter blades in performance of a mini-centrifugal fan pump, it establishes numerical model based on CFD.It applies the Realized-k-ε turbulence model and SIMPLE algo-rithm to study the effects of the circumferential position, the length, and the tilt angle of splitter blades on the pump performance.P-Q curve of fan pump under experiment matches well with that under simulation at 5500r/min.Simulation results show that the performance of the centrifugal fan pump would be improved apparently for this fan model in three cases.One is that splitter blades are placed position4 between two long blades.The sec-ond case is that the ratio of the inlet diameter of splitter blades to the impeller outer diameter is 0.75.The third case is that the angle between the inside edge of splitter blades and the axis of the pump is 12.5°.It demon-strates that the optimized number of both long blades and splitter blades are 11 for this fan model based on the geometrical parameters optimization of splitter blades.