drag turbine

25 mm cylinder height would increase with the increase of Re at Re>100,as a result of eddy resistance,enhancement of stream pulse and acceleration of stream frequency.

25mm的柱群外,其余实验段fRe值随Re增加而缓慢增加,这是由于产生旋涡阻力、水流脉冲增强及频率加快导致的。