CAJ | 학술논문

　　采用计算流体动力学分析软件FLUENT对小直径井下涡轮发电机的涡轮叶片叶型进行了流体动力学分析，得到其定转子内部的流场分布。将仿真得到的入口压力与理论计算所得的设计压力降做对比，验证了简化后的二维叶型仿真的可行性。分析结果表明，转子叶片吸力面的弯曲程度过大将造成脱流，并且适当增大转子叶片出口角，可减少其尾缘出现涡的可能，提高涡轮叶片的水利效率。根据仿真结果对该叶型进行优化。
　　채용계산류체동역학분석연건FLUENT대소직경정하와륜발전궤적와륜협편협형진행료류체동역학분석，득도기정전자내부적류장분포。장방진득도적입구압력여이론계산소득적설계압력강주대비，험증료간화후적이유협형방진적가행성。분석결과표명，전자협편흡력면적만곡정도과대장조성탈류，병차괄당증대전자협편출구각，가감소기미연출현와적가능，제고와륜협편적수리효솔。근거방진결과대해협형진행우화。
Using the computational fluid dynamics analysis software to do the hydrodynamic analysis for the turbine blade of the downhole turbine generator and flow field distribution is got.By comparing with the design pressure drop of the theoretical calculation,the feasibility of the two-dimensional leaf shape simulation for the turbine blade is confirmed.Analysis Result showed that oversize of the degree of crook of the suction face would cause flow separation .Increasing the exit angle would de-crease the possibility of vortex along the trailing edge of the rotator and increasing the hydraulic efficiency of the turbine blade. The blade shape based on the conclusion of the simulation is optimized.