【摘要】 采用流线曲率法计算了叶轮进口无叶区流场，并根据计算结果和实验验证，设计出一种新的叶片入口型线，使沿叶片进气边冲角均匀．更多还原

【Abstract】 Streamline curvature method has been developed for computing inlet vaneless region of impeller.The experimental results are in conformity with the computing results.On the basis of computing method as above,studies the experimental impeller in detail.According to the distribution of flow angle and blade angle,a new blade inlet profile has been given.The result provides effective reference for designing suitable blade inlet profile.It is of significant for us to decrease fan noise and increase fan efficiency.更多还原